Wednesday, April 29, 2009

ISA HK/China --- Appointment of Deputy Station Manager (Ray Ching)




Dear Station Members,

It is the pleasure of ISA HK/China to inform you that Mr. Ray Ching has just been appointed as Deputy Station Manager in our Station, to help us cope with our rapid expansion in our territory.

Ray has been a keen participant in ISA HK/China in the past few years & has been observed for Integrity, Professionalism, Participation, Fact-finding & Truth-telling in his attitude. He is so satisfied by the Station Manger & Deputy Station Managers to take up this post as to help us expand further in our continuous drive to promote proper Arboriculture & the benefits of trees in our territory.

ISA HK/China has by now a Station Membership of +800 no. & we have newcomers joining every week. Our Station Members come from all walks of life in equality & freedom of expression without prejudice or distinction. Every Station Member is just as equal despite background of social position, profession & education. Enquiries are replied without distinction & every Station Member is treated with respect.

For your information, Ray is an Engineer by original discipline like the Station Manager, & Engineers make some of the finest Arborists in the world, e.g. Prof. Claus Mattheck, Prof. Ken James & Prof. Brian Kane. Ray is a Certified Arborist & an active Tree Climber. He is ready to take his CTW exam anytime now to approach to the rank of Independent Practicing Arborist (IPA, http://isahkchina.blogspot.com/2008/08/isa-hkchina-independent-practicing.html) & to become an ISA Proctor very soon. Ray has attended landscape design training at HKU SPACE & has been in the landscaping business since 1999. His mobile no. is +852-6098 3209 & his e-mail address is rayching@hotmail.com . Ray is a friendly person & anyone is welcomed to contact him for anything about ISA HK/China.

Ray will be helping the Station Manager in the training & administration section initially, & will be branching out to other area of assistance later on.

Looking forward to our Station Members' support to Ray for his work.

best regards,

Sammy Au
Station Manager

Monday, April 27, 2009

ISA HK/China --- Tree Assessment

国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear xxx,

Thank you for your message.

What you have enquired may be of a nature of interest to a lot of our Station Members in our territory of HK, Macau, Taiwan & China, since the subject of Tree Assessment has become popular after the result of the Coroner's Inquiry of the fatal Stanley Tree Failure was announced. We therefore wish to reply with our best knowledge in an open Station Mail for public broadcast while protecting your identity. We hope we can have your understanding on this.

Before you would like to enter into the complicated subject of Tree Assessment, we would like to advise you to first study into the following literature for necessary knowledge:

1. Tree Biology (You first have to understand how a tree functions before anything else, & Tree Biology is NOT Plant Biology)

a. A New Tree Biology --- Alex Shigo
b. Modern Arboriculture --- Alex Shigo
c. Tree Anatomy --- Alex Shigo
d. A New Tree Biology Dictionary --- Alex Shigo


2. Tree Bio-Mechanics (The biggest enemy of a tree is wind. You must understand how a tree or its part may fail in wind)

a. The Face of Failure --- Claus Mattheck
b. Stupsi Explains The Tree --- Claus Mattheck
c. Updated Field Guide for Visual Tree Assessment --- Claus Mattheck
d. Tree Structure & Mechanics Conference Proceedings (How Trees Stand Up & Fall Down) --- Smiley & Coder
e. A Photographic Guide to the Evaluation of Hazard Trees in Urban Areas --- Matheny & Clark
f. Evaluating Tree Defects 2nd edition --- Ed Hayes


3. Roots & Soil (It is the roots & soil friction that keep a tree standing up. However, root invasion can damage infra-structure like sidewalk heaving, blocked pipes & cracked drains)

a. The Landscape Below Ground --- Watson & Neely
b. The Landscape Below Ground II --- Watson & Neely
c. Reducing Infrastructure Damage by Tree Roots --- Costello & Jones
d. Urban Soils (Applications & Practices) --- Phillip Craul


4. Diagnosis & Plant Health Care (If you do not understand whether a de-foliation situation is caused by pests, pollution or drainage, how can you write your report?)

a. Abiotic Disorders of Landscape Plants (A Diagnostic Guide) --- Costello, Perry, Matheny, Henry & Geisel
b. Plant Health Care for Woody Ornamentals --- John Lloyd
c. Arboriculture --- Harris, Clark & Matheny

5. Legal Consultation (What is the legal consequence of your Arborist Report? Are you inviting Law Suit?)

a. Tree Law Cases --- Lew Bloch
b. Arboriculture & The Law --- Merullo & Valentine
c. Arboriculture & The Law in Canada --- Dunster & Murray
d. Guide for Plant Appraisal --- Council of Tree & Landscape Appraisers of North America
e. Trees & Development --- Matheny & Clark

Since Tree Climbing is usually required for Canopy Inspection for tree architecture & defects, with pruning & removal as a recommendation frequently appearing in Tree Assessment in our territory, the following literature would become useful to you:

6. Tree Climbing

a. Tree Climbers' Guide 3rd Edition --- Sharon Lilly
b. The Tree Climber's Companion 2nd Edition --- Jeff Jepson
c. Arborist Equipment 2nd Edition --- Donald Blair

7. For Tree Work

a. Tree Pruning --- Alex Shigo
b. An Illustrated Guide to Pruning 2nd Edition --- Ed Gilman
c. The Art & Science of Practical Rigging --- Donzelli & Lilly of ArborMaster
d. ANSI A300 (Part 1)-2001 Pruning Standard Practices (Pruning) for Tree Care Operations --- American National Standards Institute
e. ANSI Z133.1 - 2006 Safety Requirements for Arboricultural Operations --- American National Standards Institute

The Arborist Profession is advancing daily with research & discovery from all around the world. It is much recommended for you to join ISA Membership to receive the following update for your continuous education:

8. Update & Education

a. Arborist News --- ISA
b. Arboriculture & Urban Forestry Scientific Journal --- ISA
c. Annual International ISA Conference --- held in a different place on earth every year with international Arborists gathering to share latest knowledge, research & equipment

All above information can be obtained at ISA online in www.isa-arbor.com. It is our recommendation for you to study through them all before joining an apprenticeship under an experienced Tree Assessor like our Independent Practicing Arborist (IPA, http://isahkchina.blogspot.com/2008/08/isa-hkchina-independent-practicing.html) or similar, to learn on how to assess trees on site. We shall be happy to give you a list of qualified personnel for your onward pursue.

Assessment for a tree is like medical examination for a human. No doctor would like to diagnose & operate incorrectly for a patient. At the same time, Tree Doctors should not remove the wrong tree by incompetence. As a Tree Assessor, you must remember that anything written down by you will be held to a higher degree of 'Duty of Care' in Common Laws, since your given details can be verified by another Arborist in a Court Room situation. Measurements, observations & recommendations can all be testified on site & this is the scientific side of our discipline. You therefore will be held responsible for any wrong-doing if Negligent.

We hope by now we have not frightened you to enter into the sensitive world of Tree Assessment. In reality, thousands of Arborists around the world are doing Tree Assessment everyday. The Station Manager himself has assessed hundreds of trees in the past 12 months already. A lot of Arborists sustain their income by Tree Assessment & Tree Assessment is the Crown Jewel in our Profession. It's just that you have to be careful & prudent all the way with adequate knowledge & experience on hand to do it. Never do it just for quick bucks if not sure, & you will get some good night sleep by remembering that.

Thank you for your enquiry again & please do not hesitate to call anytime if you have further questions.

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."

----- Original Message -----
From: xxx
To: egc@netvigator.com
Sent: Monday, April 27, 2009 11:39 PM
Subject: How to do Tree assessment


Dear Station Manager,

I am your CA no. HK-xxxxA. I want to learn Tree Assessment because my boss demands it now. But I did not know where to start. Please explain with my thanks.

Always support you. You are doing good job.

Regards,

xxx


--------------------------------------------------------------------------------
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Friday, April 24, 2009

ISA HK/China --- HK Tree News (Tree Failure at Robinson Road and Results of Recent Greening)


国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

The internet news below described how the Tree Failure at Robinson Road, on the night where the Chief Secretary His Honourable Mr. Henry Tang just visited trees all over HK during the day, would appear as a warning shot from our urban trees on their unpredictability to fail & injure. Luckily this time the motor-cyclist of mis-fortune was only slightly hurt by the falling tree. It may be something of a bigger event next time.

If an Arboricultural Office (ArbO) can be set up by the HK Govt to coordinate all Tree Affairs in HK, it would be seen as a major advancement in Tree Care for HK & even in the Far East. ISA HK/China has proposed such an idea back in July 2007 (see attached). However, the need for it then was not as pushing as for it now.

It would be good if this proposed ArbO can review & coordinate all Tree Planting in HK from design, installation, maintenance, regular inspection, risk management, protection & conservation to public education, for trees new & old in Govt & Private Land. Future Landscape Plans & Greenery Master Plans with regard to trees may require endorsement from this Office to ensure good quality trees are installed in the right places, since the usual option for installing poor trees would be an eventual removal & expensive maintenance before that. The contractors & maintenance should not be the only parties to blame always, & the system should be renovated to meet realities.

The ArbO is likely to be a mini-Govt on its own to govern not humans, but a population of trees. While there may be several hundred human races on earth, there are a known +100,000 species of trees so recorded, with perhaps millions not yet discovered or identified in our planet. The ArbO can be seen to be no easy task to carry out all its duties, & it will be our blessings to its staff in its first few years in operation.

If ArbO could not meet the expectation of public in time to come, complaints such as the other piece of news attached (HK Tree News --- Results of recent Greening) may arrive. This piece of news moaned about public funds (+HK$630 millions?) being spent without desirable outcome at the end. +HK$630 millions should be regarded as a lot of money on Greening & it would be an enviable sum by many western local councils to have it in the budget call. It is real sad that the media would file a rejection as described, & luckily the Arborists did not appear to be involved in this occasion.

HK appears to be thinking of catching up in Tree Planting with western nations in terms of safety & amenities. However, can the traditional thinking of 'Flowering & Scent' be replaced with Structure & Health?

May HK shine herself like the Pearl of the Orient even for her trees to let our brothers & sisters up north to come & compare with western nations & Singapore someday.

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."


唐英年巡樹 半山折樹傷人


4月21日 星期二


【專訊】政務司長唐英年昨日與官員在港島多處地方巡視樹木,並表示由他領導的管理樹木專責小組期望風季前找出有問題的樹木,加以護理。但昨晚半山有大樹的10呎長樹丫疑因枯萎折斷墜下馬路,擊傷電單車司機。

10呎長樹丫 疑枯萎墜下馬路

昨晚約9時,港島半山羅便臣道76號英華女學校對開護土牆上一棵20呎的大樹,其中一截約10呎長、半呎直徑的樹丫疑因枯萎折斷墜下馬路斷開數段。一名40歲姓黃薄餅店外賣職員駕駛電單車經過收掣不及「人仰馬翻」倒地受傷,幸傷勢並不嚴重,由救護車送院,經治理後無礙。

本月初特首高調回應赤柱刺桐塌下壓死港大女生的死因研訊結果,委派唐英年成立專責小組跟進。唐英年昨日率領多名政府官員,分別巡視中環七號碼頭、大潭郊野公園、大坑摩頓臺、石牆樹及維多利亞公園,了解本港不同地域樹木的管理及保養工作。

盼風季前找出危樹

唐英年表示,目前政府已有完善及有效的制度定期檢查樹木,即先以目視留意樹木的健康,懷疑有問題的樹木再以儀器探測,「我們會爭取在風季前能夠知道和處理那些有潛在危險的樹木」。

唐又認為,暫時毋須修例,要求所有業主確保樹木安全,因為最近幾十年的地契內已要求業主須確保住宅範圍內的樹木不會構成危險。

為跟進死因庭陪審團的建議,唐英年稱,小組未來3個月會研究是否成立樹木專責辦公室來協調樹木管理工作和重點處理一些特別複雜的個案;應否設立樹木專家小組,邀請本地及海外專家,提供樹木風險評估及管理的權威意見;前線員工的人手及培訓,以及部門之間的協調機制問題。

康文署樹隊人員向政務司長唐英年(右)示範游繩檢視古樹頂部的工作。

Monday, April 20, 2009

ISA HK/China --- HK Tree News (Politician's Support on Arborist Profession and Lung Hang Hazard Tree)

国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

Attached & below are two pieces of recent Tree News in HK:

1. Political Support on Arborist Development

A prominent politician in the Legislative Council has expressed out that both Singapore & Taiwan are already having Tree Laws to preserve & protect their trees. In her opinion, HK should follow suit. She has also given appreciation on the efforts of HK Arborists to develop this needed profession & would like to see the HKSAR Govt supporting it with positive action.

What's said by this prominent politician is cordially welcomed by ISA HK/China to accept the Arborist Profession as a social requirement rather than an amateur hobby group. Arborists are trained to look after trees from design, selection, installation, maintenance, regular inspection, risk assessment to protection, under the guidelines of international research & experience. No other landscape organization around the world at present is bigger or more historical than ISA to provide research, experience & education on trees. ISA Arborists are recognized experts in trees around the world & ISA has produced more Arborists than any other landscape organization so far.

Arboriculture is a scientific discipline. Arborists talk on research, experience & facts. We believe 'Mother Nature makes the Rules, not us' on trees. May the public understand us better not as a bunch of Tree Lovers, & would appreciate us to care for our trees professionally in our territory.

2. Lung Hang Hazard Tree

The following news was sent in for public notice by Tree Climbers Fung Kai (TCFK, http://hktcs.blogspot.com) where the Station Manager had taught the first group of Tree Climbers back in 2006 & 2007. Their teacher Mr. Thomas Chow has since then taken over & has carried on the ISA tradition of encouraging youngsters to learn tree climbing:

隆亨邨事件

四月四日早上九時,爬手與四位鳳溪攀樹隊隊員應浸會大學兩位傳理系二年級同學的邀請,到大圍隆亨邨評估一棵高約十多尺的山指甲,以確定它對行人將會造成潛在的危險。該樹種在一個以三合土築成的花槽內。花槽上空不見天日,實為一休憩間的三合土做成的頂。為了爭取陽光,該樹惟有向外發展,彎曲樹幹追向太陽。不知為甚麼原因,該樹的樹幹木質部份由地面計起,腐爛超過兩米。中心所有的木質部份差不多已經沒有了,只剩下一層樹皮輸送水分和養份到枝部和葉部。經過細心的檢查,還發現木質部份有一些蟲糞、真菌和螞蟻呢。

附近居民三年多前已向該邨的房委會辦事處投訴此事,但沒有結果。居民恐防該樹會倒下,故此利用一塊頗大的三會土磚支撐該樹的樹幹,並且為防有行人碰到該彎由樹幹,所以在附近商場取來一塊黃色的牌和一個紅色的膠袋掛在樹幹上,提醒來往的路人。當日所見,路上行人頗多,經過此樹時,每人也要避開樹幹,取彎路而行。

拍照不久,該邨有兩位工作人員查詢我們是否記者,並且著我們事前必須向該邨辦事處申請。兩位浸大同學說,這是他們功課的一部份。該兩位工作人員惟有在附近注視。其中一住在該處附近休憩的老伯,看見我們檢查該樹並且拍照,竟然很大聲的說要保留該樹,若有關機構把它移除,則先鋸去他的大腿云云。此事可見一般人對樹木缺乏認識,而政府在這方面的宣傳和教育還是不足,市民也不太注重樹木倒下時可能會造成人命和財物的損失。赤柱的倒樹事件正是一個慘痛的教訓呢!亡羊補牢,未為晚也。希望有關當局能珍惜人命,造福社祇,拿一份決心改善以前不足之處。

The incident has since then drawn the attention of relevant authority & this tree was said to undergo inspection for hazards accordingly.

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."




Tuesday, April 14, 2009

ISA HK/China --- 2009 ISA Research on 'Tools and Techniques for Detecting Decay'


国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

Attached is a recent research published by ISA in Feb 2009 giving an insight on the knowledge of Tools & Techniques for Detecting Decay.

In recent seminars & tender requirement in our territory of HK, Macau, Taiwan & China, there appeared to be a lob-sided reliance on the use of Resistance Drilling & Sonic Equipment for detecting Decay, & the results were waved around to be the only viable conclusion to determine a Tree Failure. As seen in the attached article, Resistance Drilling is invasive & will break the Natural Protection Zones of a tree & Mature Trees are not known to compartmentalize well after injury. The photos of the Tomograph results were also clear to show an approximate situation of a decay & the result would need expert analysis to draw any conclusion. All these would mean that machines can not replace the experience, observation & knowledge of a well trained Tree Assessor.

In HK where an 'Independent Tree Specialist' is preferred to be someone with horticultural background, ISA HK/China does not agree with that at all. A Tree is an engineered structure & its biggest enemy is wind. It is wind that can kill a tree in seconds by toppling it. A Tree is also a porous structure (with vessels in it) & it constantly changes shape in wind in order to dissipate breaking stresses on its parts. Without basic knowledge in Wind Mechanics, it would be difficult to predict Wind Failure & to prescribe Treatment such as Pruning & Cabling, & Pruning is not just cutting from Branch Bark Ridge to Branch Collar only but why, where, how much & with what to cut. A proper Tree Assessment would be the first step before prescribing Pruning.


In prescribing Tree Work, the Practicing Arborist should be familiar with the practical side of Arboriculture such as Tree Climbing & Chainsaw Uses. Without such knowledge & skills, this 'Independent Tree Specialist' would be just another expert gardener, & would need to rely on paper work (photos & reports?) to supervise site work. This method does not appear to work out well internationally.

It is the opinion of ISA HK/China that The Arborist Profession in our territory should not rely too heavily on credential only, but more on skills & experience. ISA HK/China would like to see an Apprentice System among our fresh Certified Arborists (CA) to follow Senior Arborists like the Independent Practicing Arborist (IPA) (http://isahkchina.blogspot.com/2008/09/isa-hkchina-reply-on-tree-transplanting.html) or someone similar, to learn & advance their skills & knowledge before going into self-practice. The HK Legal & Medical System would require juniors to follow seniors for apprenticeship for a number of years & they have a Practicing Certificate to ensure quality. Then why not in the Arborist System were Arborists are Tree Doctors & Tree Detectives? However in doing that, the Senior Arborist must have enough work to sustain himself & apparently at present, it is not the case.

For any of our CA wanting to perform Tree Risk Assessment, it would be the advice of ISA HK/China for them to first go & master Tree Biology & Tree Bio-mechanics before attempting to enter this sophisticated area of practice. Both Dr. Alex Shigo & Prof. Claus Mattheck offer great publication in this area to provide important information. The literature can be purchased on ISA website of www.isa-arbor.com . They are difficult to read & understand, & the later part is full of engineering & mathematics. However, there appears to be little alternative if an CA wishes to enter into this area of practice.

It is important to remember that any Tree Inspection & Risk Assessment may bear legal consequences since Arborists are held to a higher degree of 'Duty of Care' in law to provide technical advice. Negligence or foul play can easily be detected by another Arborist & Arboriculture is a discipline based on science & research. There are many Court cases challenging Tree Inspection & Risk Assessment in western countries, & it will not take long for our territory to begin to have precedents. Therefore, our CA's should take great care in their work in order to stay dry & clean.

Trees would become liabilities if not designed, planted & maintained well. Poor quality trees & trees planted in the wrong places are difficult to maintain with the only option to be replaced with new one later. If trees in our territory now are to be compared with those of the western world or even with Singapore in terms of safety & amenity, we may have a long way to go indeed.

May the Arborist Profession in our territory develop well to turn our trees into assets, with HK possible taking the lead in its drive after the tragic Stanley Tree Failure.

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."


Wednesday, April 8, 2009

ISA HK/China --- International Definition of a 'Tree'




国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

In HK, a Tree is defined in a peculiar way.

In accordance with the Govt Guidelines of Environment, Transport & Works Bureau Technical Circular no. 3/2006 & Lands Administration Office Practice Note no. 7/2007, "A plant is considered as a tree is its trunk diameter measures 95 mm or more at a height of 1.3 m above the ground level."

Under such Guidelines, bananas, bamboos, large shrubs & palms meeting the above size requirement would all become ' Trees' in Govt land & projects. With this definition in force, these ' Trees' would need to be 'preserved' under a hierarchy of ' Retention first; if not, try Transplantation; if still not, apply for Removal' . In the case of Removal, there is a requirement of a 'Compensatory Planting' at a 1 : 1 ratio to pay off the debt upon construction completion, with the space to be provided by the applicant to fit them all in, unless under pure justification. Over-crowding & congestion will be the burden of the developer or management at their own risk.

It is not known internationally that bananas, bamboos & palms would be classified as ' Trees' in Biological terms or even by common sense. Different Biologists in different parts of the world seem to define ' Trees' differently. However, it is not to the knowledge of ISA HK/China that as undeveloped as African States would regard bananas & bamboos as ' Trees'. In the primitive research of ISA HK/China, it appeared that the famous Wikipedia online can provide a detailed definition for a Tree in the following link: http://en.wikipedia.org/wiki/Tree . Many other links have been approached to look for detailed explanation of a ' Tree' but the Wikipedia so far appeared to provide the best answer. Without diving into the complicated taxonomical explanation of many of the research, a Tree appeared to be generally accepted to be a plant with a lot of wood, tall, long-living & with a prominent central leader. Some Trees would live for thousands of years & some are over a hundred meters tall. Woods from Trees are generally good construction material & are suitable for furniture making. Bananas, bamboos & palms are not known to meet all these requirements.

Recently in the UK, a famous legal case between a developer & local authority has led to a 12,000 word legal definition of a ' Tree' ( http://www.telegraph.co.uk/news/newstopics/politics/lawandorder/4613654/Judge-takes-12000-words-to-define-a-tree.html) in High Court. The Lord Judge making the statement had frankly said that there had not been a statutory definition a ' Tree' in British history, & this explanation would provide a precedent in Britain.

One of the consequences of having Trees defined as in the Guidelines of HK above is that large ' Trees' would need to be 'preserved' in accordance with the hierarchy of Retention, Transplantation before Removal. This has led to grievances from the construction sector & eventually to a well distributed complaint by a Mr. Lo Tung in Sep 2008 as per attached (http://isahkchina.blogspot.com/2008/09/isa-hkchina-reply-on-tree-transplanting.html), which was copied to all sound members of the HK society. While Lo Tung's complaint caused as little as a ripple in HK, the Stanley Tree Failure of 27.8.2008 that killed, eventually led to a tidal wave for public attention. The media & public were both questioning the wisdom of preserving Trees out of sentiment against safety. HK appeared to re-think again.

It is a know fact that the width of most lorry bed in HK is only 2.5 m wide. In transplanting large trees with a sizeable canopy, the width of most lorries simply could not fit in. Therefore, in order to force this mature tree onto the lorry for transport, the canopy & sometimes the rootball are 'topped' to fit. Then the clients would not accept Topping because it is regarded to be a bad arboricultural practice. Some of such photos are attached in here for public viewing. Now should we blame the contractors for bad work or shall we stake out the parties initiating the ' Transplant' for the decision ??

It appeared that public funding has been squandered for unnecessary ' Tree Transplant' many a times in HK in the past. With now the HK Administration reviewing afresh the Tree Policies with specific attention for public safety in HK, would there be reform & who should be invited in to help make decisions?

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."

Thursday, April 2, 2009

ISA HK/China --- HK Tree News (Arborists are 'Tree Technicians'??

国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

Below is a piece of local news sent in by Station Members with regard to the image of the Arborist Profession in HK. ISA HK/China is trying to tone down our response in this Station Mail not to invite international uproar, since Station Mail is read nowadays in the Pacific Rim, Europe & America by the thousands.

The discussion in Blue below was describing the Certified Arborists (CA) not as any 'expert' in Tree Care. CA's were compared to 'Tree Technicians', lacking what an 'expert' would understand as 'professional knowledge'. The CA's were further taken as lacking the abilities of a 'Tree Doctor' to diagnose ailing trees.

This is the first time that ISA HK/China has heard criticism on our CA system anywhere in the world, & sadly this has happened in HK where ISA HK/China is based. It would be even more hurting if this would come out from someone who has an ISA Membership.

May we first look into how a CA is 'produced' in ISA before anyone would make any further comments. In accordance with the Entry Qualification of the CA exam, the candidate has to fulfill the following requirements:

" Examination Eligibility Requirement

The ISA Certification Board requires candidates to have a minimum of three years of full-time experience in arboriculture. Acceptable experience includes the practical use of knowledge involved in pruning, fertilization, installation and establishment, diagnosis and treatment of tree problems, cabling and bracing, climbing, or other services that directly relate to arboriculture. Examples of experience sources include, but are not limited to,

• tree care companies • utility personnel
• nursery personnel • instructors of arboriculture/horticulture
• landscape personnel • horticultural/Extension advisors
• municipalities • consulting arborists
• state forestry personnel • pest control advisors/applicators

The eligibility requirement also may be satisfied with a two-year degree in arboriculture and two years of practical experience or a four-year degree in a related field and one year of practical experience. If you are self-employed or own your own company, you will be required to submit three letters of references with your application. References may be in the form of copies of invoices, contracts and/or business license. Please contact ISA for other possible forms of verification. "

The application procedure has clearly screened out those who are not related to the profession or not trained relevantly for Tree Care. Any falsification in the application will lead to removal of the credential anytime before or after the exam. The Chief Proctor has the authority to carry out such investigation.

The CA exam is in the form of 200 multiple choice, in which 10 Tree Samples are given for identification. The average international passing rate of the CA exam is around 25% at present. It is very low when compared to most Professional Exams in HK for Engineers, Architects, Lawyers & Doctors.

After getting the CA credential, it is only valid for 3 years. The CA has to collect 30 Continuous Education Units (CEU) by self-study within this period for re-certification, or he/she will have to re-take the exam.

On the working side, it is a fact that the CA's in HK are not active in Arborist Services such as Tree Selection, Tree Installation, Tree Inspection, Risk Assessment, Pruning Supervision, Construction Protection, etc. like their overseas counterparts, partly due to our landscaping system not demanding CA for this kind of service in the past. However, those who do work as a Practicing Arborist like the Station Manger (SM), would produce quality services to international requirements. One of such incident is attached for public viewing in here & the SM himself has inspected & assessed hundreds of trees alone in the past 12 months in Govt & private sector in HK.

Arborists around the world are known as Tree Doctors & Tree Detectives. Not quoting work from other CA's in HK without their permission but his own, the SM has stood up as Expert Witness in Court, carried out Pruning Supervision on site, assessed OVT's & delivered various Arboricultural Training locally & overseas. If this does not qualify a CA to be a genuine Tree Professional, then what does?

Those who would call CA's as 'Tree Technicians' may not actually understand the requirements, training & experience of how to become a CA. There are now +22,000 CA in +30 countries around the world & CA is a respected profession in 47 countries. There is a CA exam given every 18 hours anywhere in the world right now. The popularity of the CA credential has spoken for itself & the world would not be as foolish to keep on pursuing something of no value.

In his conferences & travel for ISA commitment, the SM has met prominent CA's like Prof Ed Gilman of University of Florida, Prof Bill fountain of University of Kentucky, Prof Brian Kane of University of Massachusetts, Prof Frank Schwarz of University of Switzerland, Prof Ken James of University of Melbourne, & many others.... All these Professors were very proud of their CA credential every time.

Furthermore, the trees in Singapore are looked after well by their +150 CA's in the National Parks Board (Nparks). We in HK admire the trees in Singapore all the time. It is a known fact that their CA's would look after their trees from design, installation, maintenance, inspection to protection as genuine Tree Professionals.

Would we now not appreciate the abilities & contribution of the CA as Tree Experts to care for our trees? Would great Professors & senior Govt Officials around the world join the rank of CA because it is a 'Technician' quality?

May the HK public understand the CA profession better & let those who would regard CA's as 'Tree Technicians' to come sit for the CA exam just for once, to find out whether such claim can be truly justified.

best regards,

Sammy Au
ISA HK/China Station Manager
ISA Chief Proctor for the HK/China Region of HK, Macau, Taiwan & China

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."

要使古樹不再殺人 須健全樹木醫護制度

(明報)4月1日 星期三 05:10

【明報專訊】政府高調回應赤柱 刺桐塌下壓死港大女生的死因研訊結果,由行政長官 委派政務司 長唐英年 成立專責小組,檢視管理樹木工作。這次塌樹殺人,顯示康文署 對於樹木安危的評估,已經使人失去信心,關鍵在於康文署並無樹木專家,而該署卻不肯面對這個現實,終致發生塌樹殺人慘劇。專責小組一定要解決這個問題,配合人才培訓,才有可能使樹木成為香港人的朋友,而非殺人兇手。

有足夠知識診斷病樹? 樹木組表現證明不及格

康文署轄下樹木組約有120人,據該署介紹,這些人員均曾接受專業樹木護理訓練,有90名管理及督導級人員接受過海外樹藝專家在香港舉辦的樹木護理課程,更有40名職員考獲國際樹藝學會註冊樹藝師資格。不過,據樹木專家、港大地理系講座教授詹志勇表示,這些樹藝師負責日常保養樹木的工作,相當於樹藝技工,並無專家所需的專業知識。

如果康文署認為考獲「國際樹藝學會註冊樹藝師資格」,就具備專家身分和要求,則證明這個資格未能滿足香港的現實情况;若這個資格合乎專家的身分和要求,則可能是管理和制度架構使他們未能發揮所長。從過去所發生的事故看來,樹藝師資格未合乎專家身分和要求的可能較大

日常護理樹木,需要技工,但是同時需要懂得樹木病理的專家,及早發現樹木有什麼毛病,以便治療。以赤柱刺桐塌下的經過為例,說明康文署人員根本未能給刺桐準確斷症。刺桐塌下殺人後,樹木組人員鋸斷樹幹,發現樹身有大洞,內藏無數小昆蟲及螞蟻等,一幅萬蟲蠢動景象,使人毛骨聳然。刺桐被蛀蝕中空,健康之壞早已不言而喻。但是刺桐塌下之前約一個月,才通過樹木組人員所做的聲納檢測,認為樹身狀態屬於可接受,而塌下前不到一星期,也通過樹木組人員的目視檢測。

另外,死因研訊中,以獨立專家身分作供的詹志勇,也曾指出樹木護理人員知識水平不足,即使儀器顯示刺桐腐爛程度大增,但他們單憑目視仍然決定只密切觀察,未能及時抑制姫小蜂侵害,間接導致塌樹。詹志勇認為,從檢測刺桐的數據和所顯露「身體語言」,其實早已反映有倒塌危險。我們認為,上述種種情况,說明樹木組人員根本無足夠專業知識護理樹木。

康文署無夠資格樹木專家,並非始於今日或塌樹之日,過去沒有,現在也沒有。問題是塌古樹危機也非始於今日,2007年九龍公園 一棵細葉榕「樹王」,曾發生大部分樹身塌下,猶幸未造成傷亡,當時輿論和專家已經質疑樹木組人員缺乏專業知識,本港部分古樹的安全度引起關注。不過康文署並未正視缺乏樹木專家的問題,以今次聆訊為例,還花錢特別從加拿大 請來樹木專家,提供對康文署有利的口供。聆訊結果令康文署的企圖未能得逞,但是該署的頑固做法於此可見一斑。

護理人員並無醫生功能 樹藝師無醫樹專業資格

近年本港保育意識高漲,保育除了要與社區發展尋求平衡,還涉及安全,保育古樹就碰到這個問題。九龍公園細葉榕「樹王」因為未傷人,安全問題未引起足夠關注,到赤柱刺桐塌下殺人後,政府才高調回應。事態進展,顯示負責保育古樹的康文署樹木組人員,與其工作所需要專業知識,存在落差。不少古樹就在市民身邊,特別是彌敦道尖沙嘴 段和栢麗大道的古樹,設若它們有病而未為所知,他朝不幸重演赤柱刺桐殺人事故,就為時晚矣!

樹藝師對於護理樹木,具備一定專業知識,這一點不能否定,但是樹藝師的角色與職能,與專家有很大不同。正如醫生與護理人員一樣,護理人員並無斷症的專業資格、知識和能力,護理人員在醫生替病人斷症、處方之後,按照醫生的指示和要求,護理病人,但是如果病人的病情未被診斷出來,護理人員也就無用武之地。護理人員不能取代醫生,醫生若放下身段,可以為病人做護理工作,這就是醫生和護理人員的分別。

證諸過去發生的事故,樹藝師未能診斷出病樹,已是定論,因為他們不具備類如樹木醫生所需要的專家知識和資格。要保育本港的樹木,使樹木不再成為殺手,本港要盡快填補樹木專家這個空間。

詹志勇在死因庭作供時,建議樹木組團隊由科學家帶領,經理級人員入職時亦要擁有相關學位,安排專業訓練,持續進修。陪審團狠批康文署之餘,也建議要加強在職人員培訓,入職條件應提升至專業水平。唐英年表示專責小組的工作重點,要兼顧在推廣綠化工作、保育古樹的同時,一定要確保市民安全和方便。要達至這個目標,首要完善護理樹木的基建工程,而引入樹木醫生,建立一套健全有效的樹木醫護制度,才是使樹木與市民和平共存的長治久安之計。

Tuesday, March 31, 2009

ISA HK/China --- RTHK Interview on Recent HK Arboricultural



国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders or anybody are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

The Station Manager (SM) has given an interview at the radio Talk Show of Radio & TV of HK (RTHK) called 'Liberal Wind, Liberal Phone' in Cantonese for about 15 minutes yesterday, to talk about the CA, CTW & IPA credentials & matters concerning the Arboricultural Development in recent HK.

Details of the conversation can be downloaded at http://www.rthk.org.hk/rthk/radio1/openline_openview/20090331.html for anyone interested.

Please note the skills of the SM in diverting attacks towards Govt Depts in local Tree Affairs during the rather stressed interview.

Assuring you that ISA HK/China will develop in a manner following the Mission of ISA at all times.

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."


Thursday, March 26, 2009

ISA HK/China --- A study on the Parks and Trees Act (2005) of Singapore



国内朋友请使用翻译软件阅读本文。

*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders or anybody may not be entertained, & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at
http://isahkchina.blogspot.com/ , although images are usually not attached due to size. ***

Dear Station Members,

In HK for years, Tree Lovers have cried out to demand the legislation of Tree Law to preserve & protect our trees. Some think that with a set of Tree Law in place, our trees will be designed, installed, maintained, inspected & protected properly. Unfortunately over the years, few solid proposals have been put forward as how to draft up such a complicated & important Law. Most appeared to want it out of passion or sentiment, but not knowing the impact of having such a Law in our society.

ISA HK/China has taken a little time to research into a relevant set of such Law in Singapore called the Parks & Trees Act (PTA) of 2005 which may serve as a useful reference for our Tree Lovers. The full contents of the PTA can be downloaded from:

http://statutes.agc.gov.sg/non_version/cgi-bin/cgi_retrieve.pl?actno=REVED-216&doctitle=PARKS%20AND%20TREES%20ACT%0A&date=latest&method=part

The PTA does not appear to be written in difficult legal language. Anyone with reasonable English should be able to understand it with ease. It is +45 pages long, depending on where you would start reading it.

Please note ISA HK/China has only an amateur ability to understand the PTA & please do not take our message as gospels but with your own interpretation. Flexibility must be allowed & contemplation must be given while understanding the PTA for any consideration.

Highlights of our review of this excellent PTA are given below without commitment for sharing with our Station Members:

1. The PTA has a well defined position & hierarchy in the Singapore Greenery System. A Commissioner of Parks & Recreation is appointed by a Minister (Minister of National Development?, as it is not stated in the PTA) to issue working instructions to the National Parks Board (Nparks) which is the leading agency in executing the PTA. Nparks itself is ordained under the National Parks Board Act of 2005 for its functions & duties.

2. Restricted activities in respect of trees, plants, etc. in national parks & nature reserves in Para 8 & 9 of PTA are similar to that of the HK AFCD regulations.

3. Para 13 of PTA has empowered the Minister to designate a Tree Conservation Area anywhere in Singapore if it is 'in the interests of amenity to make provision for the conservation of trees'. Wouldn't the Tree Lovers of HK be overjoyed to hear this if the same would be applied in HK?

4. Para 14 will restrict any Tree Cutting having girth of more than 1m in any vacant land besides in Tree Conservation Area, without approval. There is currently no regulation in HK to prevent cutting trees belonging to private owners in private land no matter what size they may be.

5. Para 15 gives the Commissioner power to serve a Tree Conservation Notice in any vacant land in Singapore ' to maintain or conserve the tree or group of trees' there. There is currently no equivalence of such practice in HK especially for private tree owners.

6. Para 19 requires the Road Authority to consult Nparks before carrying out any work or activities within a Heritage Road Green Buffer. In a way, certain road work can not proceed without agreement of the Greenery Authority in Singapore.

7. Para 20 stipulates the application procedures to cut trees & plants under the PTA. The application is required to be made to the Commissioner ' in such form or manner as may be prescribed '. This clause allows flexibility in the application procedures rather than listing out rigid forms & orders to be filled in, & the application format can change to cope with practical needs. Under section 4b of Para 20, the Commissioner has the right to grant approval 'as he thinks fit'; & under section 5, revocation may be required ' if he is satisfied ....'. This, in a way, is giving authority to the Commissioner the sole power to decide upon any tree cutting application, rather than to consult the many parties or interest groups like in HK. Naturally it is believed that the Commissioner would not grant such approval without consulting expert opinions from Nparks, & Nparks is known to be full of Arborists to look after their trees in Singapore.

8. Para 21 has listed out the requirements in reinstating damaged plantings in the form of Reinstatement Notices by the Commissioner. Section (c) of this Para has given guidelines for restoration as ' to restore any part of the heritage road green buffer to its former state or, if such restoration is not reasonably practicable or is undesirable....'. This is giving flexibility in restoration, which is similar to the so-called 'Compensatory Planting' in HK, not to be in the strict 1 : 1 ratio; but to the review & decision of the Commissioner under apparent consultation with Nparks, which would alternatively rely on their +150 Arborists for decision in Tree Planting.

9. Para 23 (1) (a) & (b) has given guidelines on how to install planting area in development in Singapore to be ' not more than 2m wide...' or 'not more than 5m wide from the front boundary of the premises adjoining or abutting a public street '.

10. Under section (3) of Para 23, the Minister may ' prescribe different dimensions of planting areas for different classes or descriptions of premises...' , & this notification shall be ' presented to Parliament...' . This just shows how serious Singapore is taking their greenery proposal all the way up to Parliamentary level.

11. Para 24 (1) states that ' No person shall, except with the approval of the Commissioner..... commence or carry out, or permit or authorize the commencement or carrying out of any building work on those premises.' This can be interpreted as no builder's work can commence until the Planting Plan is approved under the PTA.

12. Para 25 concerns the responsibility of maintaining Planting Area. It describes that ' It shall be the duty of the occupier of the premises... to maintain the planting area, .... The Commissioner may, .... require the occupier .... to carry out such work to the planting area o any part of it as he thinks fit...'. This ensures the Planting Area under the description is properly cared for by the premises owner.

13. Para 26 describes how the Planting Areas are not to be interfered or penalties will be imposed.

14. Para 27 provides enforcement for Greenery Protection. It states in section (1) that ' Commissioner may at any time serve on the occupier of any premises... to do all or any of the following within the green margin of those premises...'. The kind of work to be carried out such as planting or re-planting, maintenance, weeding, etc. are given. In section (2), ' No person shall, at any time, cut or damage any tree or plant which has been planted....', unless it ' constitutes an immediate threat to life or property.' This is similar to the HK guidelines that trees posing immediate danger can be removed without prior notice.

15. Para 30 concerns the provision of Green Verges on public street. Under section (3), ' ....or no green verges are made up in respect of those construction work, .... an enforcement notice in writing requiring him to make up such green verges ...'. Then in section(4), the ' Road Authority shall, before commencing or carrying out, or permitting or authorizing... of any construction work... by or under any written law, consult the Commissioner in respect thereof.'. This again appears to confirm that road work in Singapore would require agreement of the Commissioner before commencement if greenery has become an issue

16. Para 31 concerns street works affecting Green Verges. The Commissioner ' may serve a reinstatement notice on any person who appears to the Commissioner to have been responsible for or have participated in anything done in contravention of that subsection requiring the person to remedy (wholly or in part) the contravention.'

17. Para 32 deals with the specification & approval procedures in greenery application. Section (1) (a) has intelligently allowed flexibility in the submission by not stating rigid formats in application procedures, but to provide ' in such form & manner as the Commissioner may require'. This then allows the Commissioner to pick the best & most suitable format in submission to suit practical needs. Singapore has nearly zero corruption & this clause would work for them well. Section (2) allows the Commissioner to require the plans ' to be made or certified by a qualified person' ,& not stating which particular landscape professional (Horticulturist, Arborist, Landscape Designer, etc.) is required. The 'qualified person' in PTA is either the Architect or the Engineer, & the Commissioner would let them pick whichever landscape professional that would be acceptable to the Commissioner for making the planting proposal. In this respect, Arborists are likely to be employed by the 'qualified person' to deal with Tree Design & Selection, Tree Planting & Maintenance, Tree Inspection & Protection; since Nparks reviewing the plan under the Commissioner will be full of Arborists themselves to talk on the same subject.

18. Para 37 concerns trees & plants obstructing traffic. Authority is given to the Commissioner to ' serve an enforcement notice requiring the occupier of the premises to take such measures as the Commissioner thinks fit ' to rectify the situation. Here again, it will be up to the tree owner to employ whatever landscape professional acceptable to the Commissioner to do work complying with the Commissioner's notice. Then as such, Arborists are likely to be appointed to carry out Tree Work such as pruning, removal or transplanting for the rectification, & not by common gardeners.

19. Para 39 deals the power to require information in respect of contravention. The Commissioner has the authority to ' serve an information notice to require any person.....with information relating to that case in the possession or within the knowledge of that person'. Since no exemption clause appears to exist to exclude anybody in this Para, it may indicate to even include Govt Officers in other agencies to be under the scrutiny. This then provides the Commissioner a paramount authority to demand information from anybody if a contravention has appeared anywhere before him within his jurisdiction.

20. Para 40 further provides the Commissioner the authority to ' enter any land ' to investigate any suspected contravention, including demanding the identity of the suspect.

21. Para 41 provides the Commissioner the power to ' arrest, without warrant, any person who has committed....an offence under this Act....' under certain condition. A person arrested under this section ' may be detained ' until his name & address are correctly ascertained.

22. In the other Paras of Part VIII of the PTA, penalties & offences are clearly defined for breach of this Act. It appears that the final judgment will be by the Court Judge & the offenders are likely to appear in Court in the case of a contravention.

23. In Part IX of the PTA, the appealing procedures, exemption, service of documents, etc. are given. It is also interesting to learn that in Para 63, ' The Board (Nparks) may,......, make regulations for carrying out the purposes & provisions of this Act.' This is giving Nparks the convenience to make technical judgment for future variation.

In summary, to the interest of ISA HK/China as an Arboricultural Organization, the relevant advantages of the PTA appeared to rest in the following areas:

a. The PTA has set up a simple structure of having a Commissioner who may be an Administrative Officer, to rely on a single Govt Agency (Nparks) for technical consultation in greenery matters, & not favouring any particular landscape profession in greenery issues (In fact, favouring any particular landscape profession may actually infringe the Law of Equal Opportunities in HK). Nparks in turn possess a range of landscape professionals to do the work. Trees are known to be the responsibilities of the +150 Arborists in Nparks from design, installation, maintenance, inspection to preservation.

b. The PTA does not instruct a rigid framework in their submission procedure or format, but rather in a manner suitable to meet the practical need of the situation at time of application. This allows flexibility & aims straight to the target as deemed required by the circumstances encountered.

c. The duties & responsibilities of each of the parties (Govt & public) concerned are clearly defined, with penalties laid out for Court decision. Everyone knows where he stands in front of the Act.

d. The Commissioner is empowered to overlook all greenery matters in construction & development. He has the authority to demand information from anybody including Govt Depts & is required to be consulted before certain construction is due to begin. Greenery matters can be brought up to Parliamentary level by law if necessary .

For those of us who would take the effort to study into this excellent PTA, they may now begin to realize why the trees in Singapore are so well planted. Trees in Singapore are an icon in the region, & have consistently been admired by the people of HK.

There have been a lot of ISA Research on the benefits of trees including helping patients to recover faster, building a more harmonious society & reducing crime in neighborhood. Having good trees around is not just an environmental issue but also a social sentiment nowadays. Singapore has long appreciated this fact & has built their country with good Tree Planting over the years, which has also helped develop their Tourist Industry. Trees in Singapore are looked after well by their Arborists & their contribution has been invaluable indeed.

This Station Mail may invite comments from our Station Members in HK, like a range of our other discussion in many topics. On the other hand, would anyone sending enquiries in please kindly note our circulation policy at the top of this message before sending?

Thank you for your kind attention.

best regards,

Sammy Au
Station Manager

"If a tree is not designed, installed, maintained & inspected properly, it is likely to become a liability rather than an asset."

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."

Friday, March 20, 2009

ISA HK/China --- Virus Attack on our Computer System

国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas
. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear All,

It is an unfortunate event for ISA HK/China to inform you that our computer system has encountered a massive virus attack on Monday 16.3.09 from which, about 20% of our Station Membership has been lost even after we have fixed the problem earlier today. The groups which have been affected are the Contractors, CEDD, LCSD & HYD primarily, although a few individuals in the other groupings may also be affected due to this unfortunate incident.

In order to put our e-mail listing back into place, we have reviewed from past correspondences & written record to try to reinstate. It is possible that a few individuals with correspondences with us in the past but not our Station Members are also accidentally placed into our Station Mail circulation.

Therefore, if anyone of you is receiving our Station Mail but not wanting to receive it for any reason, please kindly accept our apologies & advise us at the same time that you want to be removed from our Station Mail circulation. ISA HK/China will be obliged to remove your good name from our listing immediately & you will not be disturbed any further.

For those of you who are not our Station Members but are now receiving our Station Mail & is willing to carry on receiving it, you do not need to do anything & we shall seek no further confirmation from you.

Please note it is a Station policy that anyone can withdraw from ISA HK/China at an e-mail notice anytime & we have only 9 withdrawals from our +780 Station Membership in the past 4 years.

This message will be put on our Station Blog for public notice. We shall be grateful if any of you knowing anyone who is not receiving our Station Mail starting next week to advise us to reinstate their status for continuous mailing.

In the coming Station Mail, ISA HK/China will release our review on the important Parks & Trees Act of Singapore, & the international definition of a tree for broadening the knowledge of our Station Members.

Thank you for your understanding & continuous support for ISA HK/China always.

best regards,

Sammy Au
Station Manager

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."

Sunday, March 15, 2009

ISA HK/China --- HK Tree News (Tree Failure in Cheung Chau)




国内朋友请使用翻译软件阅读本文。

*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at
http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

As the rainy season approaches southern China, Urban Trees begin to fail as a traditional routine in our territory.

Attached is an insignificant piece of Trees News in a local newspaper showing a 10m tall tree of unknown species, failed at 8 am of 6.3.09 after heavy rain, to hit the buildings next to it. Balustrades of the 2 buildings were damaged & luckily no one was hurt. From the picture so shown, the fallen tree rested upon the balcony of a building & the chance of hitting a casual visitor would be high if at the wrong time of the day, say, evening after a meal.

It appears that our public may not have accepted the concept of 'Prevention is Better than Cure' when it comes to Tree Care, especially for potentially hazardous trees of mature size. Certain ailing trees have been kept in place out of compassion, but without regular inspection by a trained Arborist. A lot of people appear to love trees in so far that they do not have to spend money on it. Regular Tree Inspection at a 6 month interval is considered unnecessary, & trees health & safety are judged by looking at the foliage alone.

Then when the tree failed, as long as the incident does not kill, the media coverage is usually insignificant & the fallen tree would be quickly removed out of convenience. An Independent Arborist would hardly be called in to carry out post mortem for future prevention or recommendation. The case would be regarded by the public as an Act of God which should happen from time to time, because trees are doomed to fail one time or another. Any legal liabilities would be the problem of the insurance company. The case would look after itself well in our social structure with maybe a few whisper among the Tree Lovers to be just another unfortunate incident. Memories would fade in time until a bigger case would come up again.

With attitude as such in our society, trees are likely to carry on failing because they are expected to fail. Information on Tree Failure will continue to feed into ISA HK/China & Tree Failure Report will become a never ending story in our Station Mail to when ?....

best regards,

Sammy Au
Station Manager

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."

Sunday, March 8, 2009

ISA HK/China / TCHK --- Demonstration and Informal Dinner with Tim Bushnell 与国际树艺专家聚会

Dear ISA HK/China & TCHK Members 各位亲爱的会员,

It is our pleasure & honour to inform you that we have invited one of the best Tree Care Specialist in the world called Mr. Tim Bushnell to come to meet our members in HK as follows 本会有幸邀请到国际知名的树艺技术专家 添布殊先生 到纺本会,本会特意安排活动如下:

(A) Demonstration 示范表演

Date 日期: Sunday March 15, 2009年3月15日星期日

Time 时间: 2pm - 5pm

Venue 地点: Eurasian Garden Ltd., 22B, Kam Road, Kam Tsin Village, Sheung Shui, HK. 香港上水金钱村金钱路22B欧亚园艺 (电:9090 6719)

Topics of discussion 示范项目: Demonstration of various Tree Climbing Equipment & Techniques on trees; Structural Pruning & Rigging Techniques. 各种攀树、锯木、流缆、修剪的器材使用和技术

Capacity 人数 : 50 人

Cost 费用: Free of charge 全免

Deadline of Entry 截止报名日期: 9am Sunday March 15, 2009年3月15日上午9点

(B) Informal Dinner 便饭叙会

Date 日期: Sunday March 15, 2009年3月15日

Time 时间: 6pm - 9pm

Venue 地点: In a restaurant with location to be confirmed later in the Sheung Shui / Fanling Area for transport convenience. 未定,将会在离欧亚园艺不远的上水 / 粉岭地区的某家酒楼内进行

Seminar 演讲内容: A one hour presentation in power point on the use & care of Tree Climbing & Rigging Equipment, & the relationship in Structural Pruning & Rigging. Chinese translation will be provided. 一小时左右的幻灯片发布会,展出当今国际流行的攀树、锯木、流缆、修剪的器材使用和技术,多为本地没有购进和使用的部份,用以补充在下午示范表演时的不足

CEU 学分: One CEU will be offered for any CA / CTW attending 持有树艺师 / 攀树师牌照人员可得一个学分

Capacity 人数: 30 人

Cost 費用: The Dinner cost will be shared evenly among all participants like in all our Informal Dinners before. 于饭后埋单时由各人平均摊分

Deadline of Entry 截止报名日期: 9am Friday March 13, 2009年3月13日上午九点

Background of Tim Bushnell 讲者背景: Tim is the Chief Technical Officer of the International Tree Climbing Championship of ISA & the International/Regional Business Manager of Sherrill Tree which is more or less the designated Tree Climbing & Rigging Equipment supplier in our territory. The Station Manager himself practically obtain all his gears from Sherrill Tree in the past. Tim is an experienced Tree Climber & Tree Worker for decades himself, & his specialty rests internationally in these topics. Tim has flown half way across the globe to attend the HK Flower Show seminar & this is a rare opportunity in our territory that we can get to meet an International expert like Tim. This is certainly an occasion not to be missed. 添布殊先生是ISA国际攀树比賽的总技术主任,他在本行极负盛名。添先生目前任职沙路树艺器材公司的国际营销经理,此公司与ISA合作多年,而本会长的自用器材也大部份由此公司购进。添先生本身是一位在树艺工作数十年的老行家,其专项在攀树、锯木、流缆、修剪的器材使用和技术方面。此次他远渡重洋参加由康文署主办的香港花展研讨会同时,接受本会邀请作出示范和讲座两场,實为本会福祉。故祈各会员踊跃参加,一睹此君的知识风范。

Please note anyone can participate in either event or both events, although the knowledge given is different & separate in each event. It is therefore our recommendation for anyone to attend both events. 各会员可自选参加两个项目的一项或全部两项,然而两个项目并不相同,知识重点各异。本会建议各会员同时参加两个项目以得其长。

Looking forward to hearing from the participants soonest. 上述项目均有中文翻绎,欢迎各会员踊跃报名。

best regards 此致,

Sammy Au 欧永森
Station Manager of ISA HK/China 国际树木学会 中国地区分会 会长
TCHK Chieftain 香港树木学会 会长

Thursday, March 5, 2009

ISA HK/China --- China Tree News (Instant Effect)



国内朋友请使用翻译软件阅读本文。

*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at
http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

Attached is a recent article in a national newspaper in China commenting on the so-called 'Instant Effect' in their landscaping work. The contents in simplified Chinese is self-explanatory.

In our territory of HK, Macau, Taiwan & China, the same attitude of 'Instant Effect' in landscape has existed for over 20 years already. Clients, especially those in property development, desire this 'Instant Effect' so that they can market off their sales for a rapid return of their investment. Then what is left behind after the construction would be the liabilities of the property management. This has led to conflicts between the two parties all the time.

ISA HK/China constantly receives complaints form Station Members in the contracting business & housing management to curse their Tree Planting as being unreasonable & short-sighted. We would advise them each time to discuss it with their supervising body or client, because such would be regarded as a contractual dispute rather than an academic interest.

On the other hand, if a tree is produced by the Containerized Method, i.e. inside a pot or bag for long period of time, & is to be used in landscape for 'Instant Effect', Girdling Roots would likely develop inside the container to strangle the trunk vessels in future. With Girdling Roots circling around the base of tree instead of spreading out radially for anchorage, the tree is also likely to topple in storm owing to being 'top heavy' when mature .

If a tree is to be planted in a 1m x 1m concrete planter where the roots can not escape out for radially anchorage, Girdling Roots would be induced to develop inside this planter to damage or topple the tree later.

If young trees are installed in a narrow planter without adequate spacing for an 'Instant Effect', these trees would be unlikely to grow healthily & be structurally safe when they become mature, owing to a lack of space. Just imagine your own residence of 4 persons will be required to house 4 families later. Would you have enough room & resources for good living?

It can be seen that Tree Planting is a long term investment & trees are not Lamp Posts because they grow. In reality, some trees in our cities would stay longer than the Lamp Posts if planted correctly. Now our brothers & sisters up north have awakened to respect this phenomenon & are beginning to question the wisdom of the so-called 'Instant Effect'. They begin to ask whether they are really spending their money worth for something 'good looking' at present. They begin to worry about the future by planting an apparent Time Bomb. In short, they have begun to re-think.

How would we react to the same in HK then?

best regards,

Sammy Au
Station Manager

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."


Sunday, February 22, 2009

ISA HK/China --- CA Training at Reach



国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at
http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

Attached is an advertisement for Certified Arborist (CA) Training offered by an education institute called Reach in HK in Apr 2009. The contents in Chinese are self-explanatory. ISA HK/China is issuing it as soon as we have received.

Please kindly note that Reach has actually spoken to the Station Manager (SM) last Wednesday to advise that the program was +90% full at that time after less than one week of internal announcement, & only limited vacancies may be still available now.

In accordance with current ISA Certification Policies, the SM who is the Chief Proctor in our territory of HK, Macau, Taiwan & China, will not take part in any CA Training in order to avoid Conflict of interest. This complies with the ISA policy of ' The Referee can not be the Coach'.

However, the SM has agreed to Reach to offer ETF to be part of their training ground for subjects such as Pruning, Tree Climbing, Rigging, Plant Health Care, Chainsaw Uses, Safety in Tree Work & Tree ID. ETF was designed originally to be an education center for ISA Arboriculture in our territory. It was rented to Reach for their training without any participation by the SM himself.

It is always good to see CA Training is becoming popular in our territory & ISA HK/China will support any Training Institute to run any CA Program anytime.

best regards,

Sammy Au
Station Manager

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."


Thursday, February 19, 2009

ISA HK/China --- Decay Detection Device (DDD)





国内朋友请使用翻译软件阅读本文。
*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes
given in Blog at http://isahkchina.blogspot.com/ , although images are usually not attached due to size. ***

Dear xxx,

Thank you for your 30 minute phone call on your enquiry of Decay Detection Devices (DDD) for Tree Inspection. I hope I have given you a satisfactory answer with my best ability & I hope you do not mind I am repeating some of my reply to you in an open Station Mail to let our Station Members understand our conversation without disclosing any detail of yours, since I think this exchange may be useful to them too.

From my research, communication with international Arborists & observation at seminars & conferences, it is known to me that DDD can only supply a cross sectional analysis of decay to some degree of accuracy, with possibly the Micro-drill Method (Resistograph?) to be more precise than the Sonic Method (Tomograph?), if used correctly. The micro-drill method was initially used to detect wood rot in lamp post in the utilities industry, adapting to detecting wood decay by the Tree Care Industry later on.

Prof Schwarz of Albert-Luwigs-Universidad of Switzerland has given research on the preferential fungal development in micro-dill wounds rather than in normal size drill holes in Tree Inspection, due to smaller hole harbours the fungi better, at the ISA Brisbane Conference in 2008. This would mean that using micro-drill in Tree inspection may lead to a higher chance of fungal development in a tree, i.e. the more holes drilled, the more internal decay would happen as a result. This is something to watch out for in choosing micro-frill as a DDD.

No matter whether a micro-drill or a sonic device is to be used for decay detection, a longitudinal examination of decay development in a tree is not possible, with the existing DDD available in the market. It is a known fact that any cavity in a tree would not be arranged in a 2-D fashion, but rather in a 3-D configuration. It is also not possible to increment the current DDD to be at a practicable distance to map out the 3-D configuration of a cavity in a tree. Therefore, the result of such DDD would have to become a source of reference only, & not a direct determination of whether a tree would stand or fall.

I personally have seen Tomograph result of a limb before cutting, to be completely out of proportion to the actual decay distribution of the same limb after removal. This could be due to incorrect use of the instrument, poor technique in configuration or others.

Even with a high accuracy of any DDD result, it still has to be interpreted by an experienced Arborist to imply his/her knowledge to whether this tree would stand or fall under a certain condition, e.g. wind pressure, wood structural strength, leaning severity & root stability. There are many mathematical formulas to predict tree failure, & it appears that international Arborists can not agree on any one to be acceptable in a universal basis. Most would agree that it would still depend on the judgment & skills of the Arborist in concern to make out the guess work. I am attaching 2 previous Station Mail on this subject for you to refresh your memory.

Therefore, my advice in your case would be that do not take the DDD to be the Holy Grail in making a Tree Failure Analysis. The DDD must combine with the knowledge & experience of the Arborist to help him/her to make an educated judgment backed up with research.

Please let me know if you have further queries on this complicated subject. I shall try my best to answer with my limited ability.

best regards,

Sammy Au
Station Manager

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."




Thursday, February 12, 2009

ISA HK/China --- Our Station is 4 years old



*** Our weekly Station Mail is for the information of Station Members only, but Station Mail has given up copyright & can be freely circulated. For administrative reasons, comments from outsiders are usually not entertained & may be circulated within our system locally & overseas. Please note Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. ***

Dear Station Members,

Coming to the month of February 2009, ISA HK/China will be 4 years old.

Remembering when we first started in Feb 2005, ISA HK/China had only the Station Manager (SM) & one other Station Member as the only two constituents. We were in doubt of whether ISA Arboriculture could take off in our territory at that time, although we have seen the successes in other territories. Arboriculture is not a hobby like house plants as known around the world. It is a serious profession involving institutional research in universities & govt bodies at high level. Tree Care is a necessity in many municipals & is usually in the hand of City Arborists & Urban Foresters, because failing trees can become major hazards in a populous city. Legal battles would be the end result if trees have become Time Bombs.

3 years are gone by now & ISA HK/China has already +770 Station Members joining in from all walks of life, from Professors to Housewives, Engineers to Florists, Politicians to Civil Servants, Designers to Contractors, & from many other disciplines. We are an inclusive group in greenery & practically anybody with an interest in tree is welcomed to join in. We are also the biggest & an influential Arbor Group in our territory of HK, Macau, Taiwan & China at present, & we keep on expanding. Station Membership has now spread into China with their Landscape Engineers joining in as the forefront, learning & applying ISA education in their seminars & policies during their daily work. It may be just a matter of time that China will adopt ISA knowledge & principles for their trees, from design, installation, maintenance to inspection, before their public will join in en mass. The English language of ISA research appears to be the major obstacle to our brothers & sisters at present, & TCHK (http://hk.myblog.yahoo.com/treeclimbinghk) is working hard to break the ice in this aspect.

Station Structure has also developed from the sole SM & a bunch of enthusiastic volunteers to recruit two helping hand of Tony Ng & KM Li as Deputy Station Managers (DLM) in the past year. Although these two gentlemen play rather low key in their public appearance, their valuable contribution has built ISA HK/China in many areas into a solid foundation. Tony is a contemplating strategist whose steady skills has provided useful support in administration & training programs, whereas KM is a muscular trainer in many areas of the practical side of Arboriculture including appliances & climbing. On the active side, Tony has participated into the Singapore Green Thumb Climbing Event last July in place of the SM who was caught with the urgent Tree Rigging at Tsuen Wan Tak Wah Park, & has won awards in Safety & Chainsaw Uses. KM has represented ISA HK/China to attend the Leadership Workshop & Proctor Assembly organized by the ISA HQ last October to bring back photos of magnificent North American Trees to be put on Station Mail later on. We are grateful to their valuable contribution at all times.

One major breakthrough for ISA HK/China in 2008 would be the advance into China at the 2008 IPM Show in Foshan & the 2008 China Southern Green Fair (CSGF) in Zhongshan, both happened in Dec 2008. The name of ISA has since then appeared in national media in China to meet their millions in the greenery industry. Seminars on ISA Arboriculture & Tree Climbing Demonstrations were conducted for the first time at these two national shows. The name of ISA is now officially registered in the China Greenery System which is a positive beginning for our further development.

As we grow, we are constantly looking for volunteers to come in to expand ourselves. We need personnel with strong belief in Integrity, Professionalism, Participation, Fact-finding & Truth-telling to steer our Station forward, & into the Land of Old Dragons which seems to leave half a door open for us. We intend to build a united front of local experts to enter China to set up 'Trading Posts' initially in the affluent cities along the coast. As we can gradually recruit local participants to join in with our belief, we shall promote ourselves inward step by step. ISA HK/China will maintain a watchful eye on its development with all our expertise, & with the help of ISA HQ & our regional counterparts. Our promotion strategy is clear & simple to be transparent to anybody, because we believe we are doing good deeds to the China people to help them to grow better trees to improve their quality of living. How would they then object to that?

Our liaison with our regional partners around the Pacific Rim has continued to be as strong as ever, & our intimate bonding with ISA HQ will persist since we bear their name. All we need now are more helping hands from our territory willing to devote themselves for the course of our development, to set up ourselves strongly in structure & to maintain our progress steadily into China. We cordially believe those who would help in now would reap the sow in future to come, in a land so vast & green for the Tree Care Profession. Sky may be the limit for the development of Tree Care in China, which at present is a blank page.

3 years are gone & we are now moving into our 4th year. As our billionaire tycoon Mr. Li Ka Shing has said to the media in the past: "Maintain stability during development, & maintain development during stability." Such may be our guideline in a time of financial turmoil currently. Such may the key to our success in future.

best regards,

Sammy Au
Station Manager

"Trees are good for the community. Trees need care like human beings. Arborists are the Tree Care Professionals."


Sunday, February 8, 2009

ISA HK/China --- 2009 ISA Annual Conference


Dear Station Member,

Please kindly find below the information of the ISA Annual Conference to be held in Rhode Island this year.

ISA Annual Conference is a gathering of international Arborists to review the latest research, technique & equipment. It is most educational & very jam packed with knowledge contributed frommany institutes all around the world. It is an opportunity for any serious Arborist to advance himself/herself in the field.

Please note ISA HK/China has made it a requirement to attend an ISA International Conference at least once in order to join in the rank of an Independent Practicing Arborist, IPA (http://isahkchina.blogspot.com/2008/08/isa-hkchina-independent-practicing.html) in our territory. This is to ensure our IPA has an international insight & connection with global arboriculture, as well as an interest to participate into the ISA family seriously.

Looking forward to any of you joining the ISA Annual Conference this year.

best regards,

Sammy Au
Station Manger



----- Original Message -----
From: ISA Events
To: Hong Kong/China Station
Sent: Saturday, February 07, 2009 4:01 AM
Subject: Attend ISA Annual Conference
SAVE THE DATEJuly 24-29, 2009ISA 85th Annual Conference and Trade Show
Set your course for Providence, Rhode Island this summer and come to the International Society of Arboriculture's 85th Annual Conference, July 24 – 29.
6 Reasons Why You Don't Want to Miss This Exclusive Educational Experience:
1. Hear more than 50 different speakers from around the globe
2. Earn 60+ continuing education credits
3. Network with arborists and top industry professionals worldwide
4. Experience the International Tree Climbing Championship and ISA Arbor Fair for FREE
5. See cutting-edge industry products and techniques and check out ISA's "Sneak Preview Sunday" at the Trade Show
6. Participate in a variety of hands-on workshops providing 8 hours of valuable education and training
Interested?
Mark July 24 – 29, 2009 on your calendar.
Stay tuned for ways to SAVE and take advantage of this amazing opportunity awaiting you in Providence!
Be sure to visit http://www.isa-arbor.com/conference/default.aspx to get the latest information and special announcements.
If you would like to request a printed copy or pdf version of the marketing materials, please contact conference@isa-arbor.com

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