Thursday, October 18, 2012
ISA HK/China --- Pruning Demonstration at the 2012 China Green Leaders Forum 2012 中国园林领袖会议里的树木修剪示范
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本分会长在 2012中国园林领袖会议里, 展出过两场的 "树木修剪示范", 受到了一致好评, 详情可见附页。
修剪是树艺学当中一门非常重要的课题, 是所有 "执业树艺师" 必须掌握的知识。 对很多大树老树而言, 修剪往往是唯一可行的护养技术和减免风险的方法, 所以正当修剪对树木管理尤为重要。 修剪的理论看上去好像很简单, 但在现场操作起来, 许多未能预见的问题经常都会出现。 比方说, 切下去才看到枝条里面有腐烂、层裂或其他毛病, 哪还该再切多少, 才不会影响树体的结构和健康, 这动作会改变日后树体对周边的公众安全吗？ 多过及年, 树体又将会变成怎样样的发展？
树木修剪其实就好像人体手术一样, 必须先经过专业检查和监定以后, 厘定修剪方案, 再由合资格的树艺师监督进行, 进行的人又以采用攀树师最为理想。 树木修剪涉及树艺学里面的生物学、结构学、病虫学和法律责任, 乱剪的树木日后会变成乱长, 最终更可能变成 "不定时炸弹", 为害社会。 在中国地区, 目前去讲 "树木修剪理论" 的人很多, 但当中又有多少个敢爬到树上, 使用电油锯把枝条运用溜缆技术安全的切下来? 又有多少个能指揮攀树师在树上的工作？ 如果自己只会光讲而不会做, 这又能有说服力吗?
树木从生产、种植、护养到检查，都要涉及修剪。 换句话说, 不懂得正当修剪的话, 到头来也就得不到优质树木种植。 哪所谓 "优质树木种植", 就是指既安全, 又能提供种种好处的城区树木种植。 坊间说的所谓 "好看" 的树木设计, 也必须要照顾到公众安全, 不然的话再 "好看" 又有啥用? 其实所谓 "好看", 也需要与人家比较。 咱们目前的城区树木能与西方国家的来较量吗？ 不能的话, 哪咱们的到底 "好" 在那里, 也为什么不能比较啊？
国际树木学会 中华地区分会 会长 暨 创办人
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 (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-fristbcma-in-asia.html)
执业树艺师号 IPA-010908 (http://isahkchina.blogspot.com/2010/04/isa-hkchina-tree-news-1441report.html)
专业调解及谈判学会 注册调解员号 CM-0044 (http://isahkchina.blogspot.com/2012/01/isa-hkchina-mediation.html)
“如果树木在设计和种植时犯错，其护养必然昂贵，而最终也会变成 "不定时炸弹" 。 ”
“速成出来的树木评估员, 只能作出低质量的猜測。 大自然会决定成败。 ”
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Dear Station Members,
The Station Manager (SM) gave a Structural Pruning demonstration at the 2012 China Green Leaders Forum & the event was widely publicized on national newspapers in China as per attached. The SM is known as the "Founder of the Arborist Profession" in the China media nowadays. This is an honour & would help to develop the Arborist Profession there against all odds.
If there is anything that the China Tree Care Industry would miss out most, the SM would call it on pruning than anything else. Topping is a common & acceptable practice all over China, & it is taught specifically as a skill of art in many academic institutions. This includes every university in China. The tradition is deep rooted & buried.
When the SM talked about pruning in several "Landscape Bureaus" in China in the past, he was mostly met with suspicion & doubt. The "tree experts" there would insist on what they were taught & what they were practicing, as the one & only method. To them, Target Pruning would be a waste of time, & the tree would not "look good" afterwards. Flush Cut is preferred because it does not leave a bulge at the wound, & it is thought that Topping would generate more sprouting to show the true vigour & "good health" of the tree. The SM kept seeing what he had seen in HK of 10 years ago, & the word would mostly come out from landscape designers & maintenance parties in China.
No doubt China has become the second economy in the world & has achieved many technical advances in the past 30 years. However, there are hardly any mature trees of larger than 1 m diameter left in their 600+ cities. The SM wonders whether bad pruning has something to do with it. He was told by the press that there is at least one person getting killed by tree failure in Beijing alone every year, & the incidence would usually be played down to avoid public attention. Having the SM there to bring up an occasional voice to speak for the trees, would hardly change a thing.
Anyway, somebody has to do the work, or China will take a long time to get good trees. At his age, the SM has no more to lose or fear, & he is an expert China Hand. ISA HK/China will find a way to rally support for proper pruning for the benefits of China trees.
Our mission will continue.
Founding President (Station Manager) of ISA HK/China (http://isahkchina.blogspot.com)
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 (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)
Society of Certified Mediators and Negotiators Certified Mediator no. CM-0044 (http://isahkchina.blogspot.com/2012/01/isa-hkchina-mediation.html)
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."