), 亦可查閱 "百度博客 --- 国际树木学会" (http://hi.baidu.com/%B9%FA%BC%CA%CA%F7%C4%BE%D1%A7%BB%E1/blog ) 以取得本文翻绎本和其他文章。本分会的发表文章都已放弃版权, 任何人都可以自由转载作为教育目的, 但不能作为商业目的盈利。如有查询, 请电邮至 egc@netvigator.com 。一切内容, 谨供参考。
会员们:
您们好!
在2011年的圣旦期间, 趁香港放假几天, 本分会长跑去了华东的上海、杭州、苏州和无锡等地, 既是探望老朋友, 也借机会看看华东的城市发展, 尤其是种树状况.
华东这个地方素来都是出品才子佳人, 中国历代科举制度所产生的三百多位的状元当中, 三分之一都来自华东. 分会长眼中的华东人是精明能干, 办事认真. 从观察到的城市发展, 长三角地区的建设毫不逊色於珠三角, 在某些地区可能已超越了香港和珠三角. 树木种植方面, 在新开发区和旅游重点, 例如苏州的新加坡工业园和上海外滩, 某部份的设计和用材都已经达到国际次水平, 但在管理方面, 尤其是在修剪和支撑, 却与国际水平分道而行, 这里有点可惜.
在观察到的树木问题上, 普遍性的有 (附上图片里有打红圈的):
死头枯枝, 严重倾斜, 过小树洞, 交叉枝, 树溃殇, 乱补树洞, 过密种植, 劣质回填土, 使用去顶树, 机械性伤口, 树包皮, 不正当灌溉方法, 树体长真菌, 不正当使用吊针, 不正当支撑, 特大树洞, 狮尾修剪, 不正当切法, 涂盖伤口...等等.
由於会讯并非学术研究报告, 要把上列缺陷逐一写出和解释, 本分会长是缺乏时间, 唯望日后有机会到国内给予讲座的时候, 再进行双方交流吧. 这里面涉及的科学理论非常广泛, 并非三言两语可以讲得清楚, 也关乎到整套城市树木设计和长远维养的理念和态度, 可谓是"江山易改" 吧. 树木的种植是一项百年大计, 树木的寿命一般都比人类长, 算是有了合理的设计但缺乏良好的管理, 最终也是徒劳无功. 如果园林树木日后变成城市里面的 "不定时炸弹", 从城市资产变成公家包袱, 这并非种树起初的原意吧.
目前华东的发展是一日千里, 良好的树木种植可以令其城市增值, 华东人也喜欢与国际交流, 相信 ISA 在华东有一定的发展潜力. ISA 是一个国际组织, 资源和能力都比其他 "国立" 和 "市立" 的绿化组织为强, 相信可以为祖国的绿化出一分力.
旦愿本分会能为我国的树木种植贡献力量, 令中华大地的城市树木更漂亮、更省钱.
谨此致意!
国际树木学会中国地区分区会会长
欧永森
美洲顾问树艺师学会 顾问树艺师号 RCA#497 (http://isahkchina.blogspot.com/2010/12/isa-hkchina-rac-in-asia.html)
澳洲顾问树艺师学会 顾问树艺师号 ACM 0412011 (http://www.iaca.org.au/)
资深树艺师/注册攀树师号 HK-0174BT (http://isahkchina.blogspot.com/2011/03/isa-hkchina-frist-bcma-in-asia.html)
执业树艺师号 IPA-010908 (http://isahkchina.blogspot.com/2010/04/isa-hkchina-tree-news-1441-report.html)
“不深入诊断和参照研究来批出处方, 是专业失当。 ”
“速成出来的树木评估员, 只会作出胡乱的树木评估。 大自然会决定成败。 ”
*** 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 in English, although images are usually not attached due to size. All our information is for reference only. ***
Dear Station Members,
During the X'mas period of 2011, the Station Manager (SM) made a trip to Eastern China to see some old friends. The cities visited included Shanghai (23 million population), Hangzhou (7 million), Wuxi (7 million), Suzhou (6 million) & other small towns & cities. Whenever the SM goes, trees are always on the menu. The attached photos show some of the trees he visited, with the circles showing the identifiable structural & health weaknesses.
The apparent defects would include but not limited to:
dead stubs, heavy leaning, confined root space, dead branches, crossing branches, cankers, concrete filling in cavity, dense planting, poor soil quality, topping of nursery trees, mechanical wounds, included bark, incorrect irrigation method, fungal growth on tree body, incorrect drip irrigation, improper staking, huge trunk cavity, improper guying, lion tailing, improper pruning & wound painting.
As the SM would only spend a few minutes on each tree, the above defects were obvious enough to a trained eye. With trees like that, Those cities were planting Time Bombs everywhere, as the SM specifically asked to visit the populated areas with heavy human & road traffic. These cities have a long way to go to match the world for their tree planting indeed.
It is not all true that there is no good tree planting in the places so visited. The SM have noticed that some recent tree planting in public areas, especially in temples & prominent tourist spots, can be close to international requirements. The tree quality & the spacing there were seen to be correct. The only outstanding parts would be the rooting space, staking & mulching. Some photos of them are given in the attachment without circles. During the visits, the friends of the SM joked to him that the landscapers were either afraid of the Buddhas, or the senior govt officials to supply poor quality work in those places. It was said that if the Buddhas don't doom their blood lines for generations, the senior officials could make life miserable for them. So there is some hope indeed in China for quality tree planting. The SM has learned a lesson for it.
Station Mail is a newsletter & not a research publication on Tree Risk Assessment. Information here is given out of the observation of the SM without detailed examination. However, the facts are obvious enough to show that China would have a long way to go to match the world in modern tree care. This may give rise to opportunities to arborists who speak good Mandarin & possess the experience to work in China's cities. Constant focus on HK should divert into the vast territory of China. HK is only a dot on China's map. It is China which can offer boundless opportunities.
ISA HK/China will seek every opportunity to share our knowledge with China continuously . We shall also take ISA there, one tree & one arborist at a time to benefit all.
best regards,
Sammy Au
President (Station Manager) of ISA HK/China
Registered Consulting Arborist no. RCA#497 (http://isahkchina.blogspot.com/2010/12/isa-hkchina-first-rca-in-asia.html)
Institute of Australian Consulting Arboriculturists Accredited Member no. ACM 0412011 (http://www.iaca.org.au/)
ISA Board Certified Master Arborist / Certified Tree Worker no. HK-0174BT (http://isahkchina.blogspot.com/2011/03/isa-hkchina-first-bcma-in-asia.html)
Independent Practicing Arborist no. IPA-010908 (http://isahkchina.blogspot.com/2010/04/isa-hkchina-hk-tree-news-14410-report.html)
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
