国内朋友请查閱 "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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
以下是摘自一辑从香港某大报章的报导, 如果内容属实, 可说是一则由外行去管内行的例子。
相信如此庞大工程开展之前, 需要通过多番技术讨论, 从平面设计、选种、护养到财务安排等等, 当中应有各类专家参与和提供见, 而最后叫则由负责领导的委员会拍板敲定 。 这是一个正常的用钱方法, 而最后的景观效果和其长效性, 就是这次使用公款扮靓的核实方法。
假如公家的钱是花了, 而只有 "即时效果" , 却没有长远效益, 说得过去吗？怎样去向付钱的人交待？
树木的选种和种植，都有一些特定的要求, 并不是翻翻课本, 或在标本室打个圈就可以厘定一切, 美丽的图纸设计, 必须成为日后现场鉴定比较的证据，否则只是 "讲一套、做一套", 在今天传媒的监督下，还能只手遮天吗？
树木种植是由 "大自然去决定成败, 而不是设计者"，看来这句话有其道理。
谨此致意!
国际树木学会 中华地区分会 会长 暨 创办人
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 (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)
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。 ”
*** 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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com/ , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
The set of China Tree News below described how 70+% of a recent tree planting by a municipality did not survive after installation. Several thousand trees did not make it after installation. The local residents & the media have labeled it a "tree murder". Nobody seemed to have any gain on this event at the end.
If trees are poorly selected & incorrectly planted, they will turn from social asset to an eventual Time Bomb. Right trees must be planted in the right places, or Mother Nature makes the Rules. It is very important that the Tree Planting Design & Supervision, are conducted by people who understand trees. Never plant for an "Instant Effect" or just for an instance. Trees live longer than humans. We have seen already too many times that how taxpayers money is wasted in this manner.
If a Tree Design calls itself "good", it should last. Comparing the design drawings over the years with reality on site is the best proof of a quality design. Trees require mostly watering to sustain. Fertilization is minor when comparing with smaller plants. Proper Pruning would be the key for quality growth.
This example in China is just one case reported by the media on how trees were designed by people who do not understand trees. There are many others. As their landscape trees grow older, they may become more of a burden for maintenance & potential risk to the public. It's about time China to pay more attention on proper Tree Care.
ISA HK/China is ready to help our brothers & sisters up north anytime on call. We are keen to see China trees growing as good as those as anywhere else for a quality living, one tree & one arborist at a time.
best regards,
Sammy Au
Founding 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)
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."
--------------------------------------------------------------------------------
面子工程 寧波植樹變殺樹
【本報綜合報道】浙江寧波去年夏天為整治市容，在市內主幹道種植了數千棵香樟、銀杏等樹木，但為趕工期倉卒行事，在不適合種樹的季節栽樹、並於平地誤用山地苗木，導致七成以上樹木死亡，不少只剩下光禿禿的枯枝，反而影響市容。網民狠批當局為面子工程而浪費公帑、害死樹木。
樹木死亡率達七成
「通途路上去年街景整治時種的行道樹大部分都枯死了，讓人看了真是心痛！」市民徐先生表示，去年七、八月時目睹工人在市內主幹道通途路兩邊栽種樹 木，但當時根本不是種樹的時機，沒多久就發現樹上葉子大部分都掉落，根本活不成。
據悉，寧波市政部門去年進行街景整治工程「兩縱兩橫」，主要在通途路上推行綠化，當時栽種了數千棵香樟、櫸樹、銀杏等樹種。市園林管理局其後曾派 員查看，竟發現樹木的死亡率高達七成，原因是苗木不合適、種樹的季節不對及後期管理出問題。
市城管局市政管理處職員坦承，對於樹木死亡率高，他們也感到很吃驚，但因為當時要趕工期，只好匆匆忙忙地把這些樹種上。因樹木大部分沒有成活，故 該局目前沒有向施工方付費，正安排補栽樹木。
Thursday, May 17, 2012
Friday, May 11, 2012
ISA HK/China --- China Tree News (Root collar insulation & root piping) (根颈防冻和根部装水管)
国内朋友请查閱 "百度博客 --- 国际树木学会" (http://hi.baidu.com/%B9%FA%BC%CA%CAF7%C4%BE%D1%A7%BB%E1/blog ) 以取得其他文章。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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
兹附上两则国内有关树木种植的报导，以便雅俗共赏：
(A) 树木根颈戴套防冻
树木从它的雛形到今天，在地球上大概进化了两亿年左右。树木没有脚，不能逃离逆境或灾难，只能原地适应，其中要对付的逆境就是冬天的严寒。
经过了长年累月的生长适应，基本上地上部的茎干和枝叶，对冬天的环境都会作出生理调整，包括叶片脱落和茎干内部液態浓度加高等等，去进行休眠，保护树体越冬。根部方面，由於土温一般都会比气温高，温差也较少，树根普遍没有树的地上部那么耐寒。
树木的根颈地区，可算得上是树的地上部份，在大自然的生长条件下，有可能要通过大雪堆积的考验，进化当中自然产生耐寒能力。如果在这里给套上塑料圈，这胶圈的表面温度其实与气温相等，起不了多大的升温作用。但是, 在浇水后, 由於塑料圈不很透气, 令到根颈地区经常潮溼，令根冠病的发生率提高。
塑料圈作为防护剪草机的机械伤害是有一定作用, 但是在根颈的外部打上几根小竹子作为阻挡, 可能更快更有效。
(B) 根部安插排水管
俗语所云 : "人望高处, 水往低流"，大自然的水是受到地心吸力的吸引而从高处往低处流。图中所见的几根所谓 "排水管", 除非有外力作用, 否则管内的水也会流向地下，不会自然的往外喷涌。再说排水管是插到泥土里面去, 而不是插到水塘里面去, 所能抽出来的水量只可能是从土里面渗进的一点儿而矣, 至於抽水机能否把它吸出尚待考证中。
至於透气方面，泥土是一个固体，内部空气的渗达是很慢很有限, 也属於是局部性的, 作用不大。
可能真正能够帮助树木在渍水的环境下生长, 只能把根部升高到泡水线以上, 否則又是 "大自然去决定成败, 不是设计者" 吧。
谨此致意!
国际树木学会 中华地区分会 会长 暨 创办人
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)
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。 ”
*** 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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Two sets of Tree News from China:
(A) Insulation Collar at Root Crown for Cold Protection
The attached photos show that a plastic tubing or membrane was installed at the butt level of a tree for "cold protection" for mature trees in China. The description said that the root crown is the easiest part of a tree to suffer cold damage. The insulation would also protect any mechanical damage of the grass trimmer during turf cutting.
It is also mentioned that another way to "protect" cold damage at the root collar level would be "to cover the root collar with a certain thickness of soil as insulation", & this is usually done after watering.
As for the Station Manager, he has seen this kind of plastic collars to be installed mostly on palms at a certain height from ground. He was told that it was for stopping the rats from climbing up the stem to reach the seeds above. The same practice for root collar insulation has not yet been heard of, except in this incident. China may have a different perception when it comes to tree care.
(B) Installation of Piping for Root Irrigation
A particular site in Central China has a drainage problem for the transplanted trees. The landscape contractor then planted the trees at the same soil level without elevation, & then inserted 3 no. of 15 cm diameter PVC pipes at the dripline of the trees to "irrigate out the underground water". The water would be "pumped out" by a machine from time to time through suction in these pipes. The pipes were also said to "improve" aeration at the root level.
The concept of this practice may have taken the assumption that underground water could be easily "pumped out" like water in a pond. In such case, the planting medium would be fluidized.
Good luck to these trees sitting on a pile of water. It would be interesting to find out their survival rate.
best regards,
Sammy Au
Founding 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)
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."
会员们:
兹附上两则国内有关树木种植的报导，以便雅俗共赏：
(A) 树木根颈戴套防冻
树木从它的雛形到今天，在地球上大概进化了两亿年左右。树木没有脚，不能逃离逆境或灾难，只能原地适应，其中要对付的逆境就是冬天的严寒。
经过了长年累月的生长适应，基本上地上部的茎干和枝叶，对冬天的环境都会作出生理调整，包括叶片脱落和茎干内部液態浓度加高等等，去进行休眠，保护树体越冬。根部方面，由於土温一般都会比气温高，温差也较少，树根普遍没有树的地上部那么耐寒。
树木的根颈地区，可算得上是树的地上部份，在大自然的生长条件下，有可能要通过大雪堆积的考验，进化当中自然产生耐寒能力。如果在这里给套上塑料圈，这胶圈的表面温度其实与气温相等，起不了多大的升温作用。但是, 在浇水后, 由於塑料圈不很透气, 令到根颈地区经常潮溼，令根冠病的发生率提高。
塑料圈作为防护剪草机的机械伤害是有一定作用, 但是在根颈的外部打上几根小竹子作为阻挡, 可能更快更有效。
(B) 根部安插排水管
俗语所云 : "人望高处, 水往低流"，大自然的水是受到地心吸力的吸引而从高处往低处流。图中所见的几根所谓 "排水管", 除非有外力作用, 否则管内的水也会流向地下，不会自然的往外喷涌。再说排水管是插到泥土里面去, 而不是插到水塘里面去, 所能抽出来的水量只可能是从土里面渗进的一点儿而矣, 至於抽水机能否把它吸出尚待考证中。
至於透气方面，泥土是一个固体，内部空气的渗达是很慢很有限, 也属於是局部性的, 作用不大。
可能真正能够帮助树木在渍水的环境下生长, 只能把根部升高到泡水线以上, 否則又是 "大自然去决定成败, 不是设计者" 吧。
谨此致意!
国际树木学会 中华地区分会 会长 暨 创办人
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)
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。 ”
*** 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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Two sets of Tree News from China:
(A) Insulation Collar at Root Crown for Cold Protection
The attached photos show that a plastic tubing or membrane was installed at the butt level of a tree for "cold protection" for mature trees in China. The description said that the root crown is the easiest part of a tree to suffer cold damage. The insulation would also protect any mechanical damage of the grass trimmer during turf cutting.
It is also mentioned that another way to "protect" cold damage at the root collar level would be "to cover the root collar with a certain thickness of soil as insulation", & this is usually done after watering.
As for the Station Manager, he has seen this kind of plastic collars to be installed mostly on palms at a certain height from ground. He was told that it was for stopping the rats from climbing up the stem to reach the seeds above. The same practice for root collar insulation has not yet been heard of, except in this incident. China may have a different perception when it comes to tree care.
(B) Installation of Piping for Root Irrigation
A particular site in Central China has a drainage problem for the transplanted trees. The landscape contractor then planted the trees at the same soil level without elevation, & then inserted 3 no. of 15 cm diameter PVC pipes at the dripline of the trees to "irrigate out the underground water". The water would be "pumped out" by a machine from time to time through suction in these pipes. The pipes were also said to "improve" aeration at the root level.
The concept of this practice may have taken the assumption that underground water could be easily "pumped out" like water in a pond. In such case, the planting medium would be fluidized.
Good luck to these trees sitting on a pile of water. It would be interesting to find out their survival rate.
best regards,
Sammy Au
Founding 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)
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."
Wednesday, April 25, 2012
ISA HK/China --- China Tree News (Topping) 树木的 "剃头" 现象
国内朋友请查閱 "百度博客 --- 国际树木学会" (http://hi.baidu.com/%B9%FA%BC%CA%CAF7%C4%BE%D1%A7%BB%E1/blog ) 以取得其他文章。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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
附上的是一则国内有关树木修剪的评论文章, 本分会十分同意里面大部份的分析。
"修剪" 是树艺学的必修科目，当中涉及两大部份：树木的生物学和树木的结构学。树木的生物学并不等同植物学里面的生物学，而是涉及专题科目例如 "创伤板隔化"、"水泵原理"、"抗逆物质" 等等在国内尚未出现的题目。 树木的结构学更是复杂，里面涉及木质构造、反应木的产生和风力分布等等生物物理学的崭新课题，其中大部份在国内尚未出现。
一位 "执业树艺师" 所需要掌握的并不是一大堆的研究报告和天文数字，而是在现场立竿见影的判断一棵大树为何要剪、怎样去剪和该剪多少，他必需运用所学的知识，配上他个人的经验教训，来厘定他的决策，能够在接受挑战的情況下为自己的判断作出辨护。 只要一刀剪错，整棵树的结构和健康都可能出现逆转，而剪下的部份不能用钉子或胶水重新补上。 可谓 "一失剪成千古恨，回头需要几年身"啊。
并非每一位树艺师都懂得树木修剪，能讲的人很多，能下刀的人很少。 一般不是天天和修剪打交道的树艺师是不敢剪，而能剪的树艺师大部份都懂得攀树，因为光靠从地上观看，除非是非常经验老到，否则高空的异常情況是不容易判断出来，有时候爬到上面去小心看是唯一方法。
"树木修剪" 可能是国内极为需要赶快掌握的技术课题，本分会目前能供应的合资格导师也可能只有数位，当中也有不懂说普通话的。 如果寻求外援，除了需要提供翻译以外，差旅教学费用可也不得了，同时他们对我们的品种和水土气候也可能不懂。
看来要马上提高国内树木的修剪技术与国际接轨，可能还有一段漫长的路在前面 ...
谨此致意!
国际树木学会 中华地区分会 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 (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)
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)
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Attached is a set of recent tree news regarding the practice of Topping in China. The commentary by the China expert has hit it right on the spot for the current situation. The underlined parts are the quotings of the Station Manager during his many seminars in China in the past. ISA HK/China is now their main source of reference for modern Arboricultural Practices & Tree Care in Mandarin.
Topping is taught as an acceptable method of tree pruning in most China classes today. It is thought that the regeneration of new shoots is a sign of recovery after stem & branch removal at an imaginary line. The "shoot to root ratio" theory encourages transplanted trees to be topped to balance off the biomass above & below ground, so that it would help for regenerated growth after transpiration. Topping is sometimes done to "re-vigorate" a dying tree, when new shoots would emerge as waterspouts.
As construction work is active everywhere in China & mature trees are favoured for an "instant effect" in landscape, tree topping is defended by China practitioners & designers as the correct means of reducing tree size for transplant. The Station Manager is perhaps the only person ever spoken to explain the ill effects of topping in China in his many seminars there. It is also the courage of the only China newspaper in greenery, the CGN, in pairing with the Station Manager to review the practice. It is our big thanks to CGN indeed.
It will be difficult to turn the table around for topping in China instantly. It may lose jobs for a lot of people, & many academics may need to refresh their knowledge & practices. It will be a big stir in their landscaping community. The change is better from within step by step, rather than in a hurry from outsiders to say we are doing good to their trees. The Station Manager will handle this situation delicately to compare, demonstrate & educate. It will take time.
We hope one day Topping in China will disappear. ISA HK/China will work on this as much as we can as our duty.
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)
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."
Thursday, April 12, 2012
ISA HK/China --- Taiwan Forestry Research Institute visit of Apr 10-11, 2012 (台湾 "林业试验所" 之旅)
国内朋友请查閱 "百度博客 --- 国际树木学会" (http://hi.baidu.com/%B9%FA%BC%CA%CAF7%C4%BE%D1%A7%BB%E1/blog ) 以取得其他文章。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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
本分会有幸的获得台湾行政院农业委员会林业试验所 (TFRI) 的邀请，在 2012 年 4 月10 - 11日两天, 拜访了 TFRI和举行了一个下午的树艺行业简报会, 介绍了树艺行业的历史、训练和牌照制度, 和 ISA 近年在亚洲地区的发展, 受到了热烈的欢迎。
台湾位于西太平洋台风区, 处在每年台风的必经路线当中, 每次的台风都会为当地的树木带来不同的影响，当中的病树倒塌会压断电缆、封闭公路、破坏财产和不幸伤人, 在媒体会引起回响, 为民众生活带来不便. 病树的发生可以由设计、选种、护养、检查等等当中的某个环节的不小心所引致，如果有了树艺师为其把关是一件好事。
TFRI 是目前管理台湾树木的权威机关，里面的领导大都是留美留日的博士，也对 ISA 有相当了解和支持, 这令双方的沟通非常容易。TRFI 之前曾指派过属下的研究员给香港的 "树木办" 举办过有关褐根病的讲座, 在此领域他们是处于亚洲的领先地位。 除了 TFRI 以外, 本分会长也有幸的遇上国立台湾大学农学院的专家教授们, 又实地考察了当地农庄的树木种植, 交流了双方知识。
从各方面收集回来的信息, 台湾将会开展树艺师制度, 为台湾宝贵的树木资源作出统筹、管理、检查和保护；为此台湾需要大量的训练人才，来配合推动整个树艺行业发展，这对 ISA 来说是一种鼓舞。 本分会愿意为此宏大目标来作出贡献, 也非常乐意的与台湾的专家们一起共同努力，把台湾的树木种植搞得更安全、更美观和更受老百姓欢迎！
谨此致意!
国际树木学会 中华地区分会 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 (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)
专业调解及谈判学会 注册调解员 (www.wegomediation.org.hk)
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
It was a pleasure & honour of ISA HK/China to be invited by the Taiwan Forestry Research Institute (TFRI) on Apr 10-11, 2012 to visit Taiwan for promoting the Arborist Profession & ISA. The event was very successful.
The Station Manager has delivered a 3 hour talk in Mandarin on the Arborist Profession & ISA on Apr 10, which was attended by senior officials of Taiwan who took interest in the Tree Care Industry. There were approximately 60 audience from various sections of TFRI, from the Parks & Roadside Trees Division of the Public Works Dept, & representatives from various Universities. The talk circled around on the history of the Arborist Profession, the credentials system of ISA, & the development of ISA in our territory of HK, Macau, Taiwan & China. We have also touched upon Tree Work & Tree Climbing. It was fascinating to the audience.
TFRI appeared to understand very well on ISA HK/China & they have been studying our Station Mail for some time. They have also sent staff to run lectures on Root Rot Diseases for the HK Tree Management Office a while ago. This has made this return visit of ours very pleasant & friendly. The Station Manager appeared to be the first overseas Chinese to speak on this topic in Taiwan so far. We hope more can keep coming.
From all we have learned, Taiwan is about to begin the Arborist Profession to develop further on their tree planting, from design, installation, maintenance to regular inspection. The Station Manger has given advice to TFRI to not just focus on the Tree Risk Assessment alone which is a small part of Arboriculture, but to develop on all fronts of the arboricultural knowledge, with design & installation as the priority. This is because a poorly picked tree planted incorrectly in the ground would lead to expensive maintenance in future, with the tree growing bigger later only to become a Time Bomb. We have seen this happening many times over in our part of the world. We have also told them not to go for an "Instant Effect", but for sustainability. Trees live longer than humans.
It is likely that more exchange visits will happen between ISA HK/China & Taiwan in the near future. After all, we share the same culture & flow the same blood. We are brothers to them who live on the other side of the Strait. We are also keen to help without aggression. Our sharing will benefit all at the end.
ISA HK/China looks forward to more exchange of knowledge & activities with our Taiwan brothers. This will make ISA more international in our part of the world as well.
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)
Certified Mediator of the Society of Certified Mediators and Negotiators (http://www.wegomediation.org.hk/)
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
Wednesday, March 21, 2012
ISA HK/China --- China Tree News (Transplanting Fraxinus hupehensis) (移植 "对节白腊")
国内朋友请查閱 "百度博客 --- 国际树木学会" (http://hi.baidu.com/%B9%FA%BC%CA%CAF7%C4%BE%D1%A7%BB%E1/blog ) 以取得其他文章。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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
附上的是一篇最近在国内发表的有关移植 "对节白腊" 的文章, 本分会将其与已知的树艺学问作比较, 希望各会员可以从中得益.
文中提出大概有9个要点, 我们逐一分享如下：
1. 选址 --- 我们同意泡水的栽种点是不好, 但不保水的栽种点同样是不好.
2. 沙栽 --- 我们认为采用沙栽, 会导致日后根系不稳, 风中容易倒塌; 沙子的保水保肥能力低, 最好不要用.
3. 坡地、平地栽植 --- 使用挖土机, 走过的地方会把泥土压成板结, 不透水透气, 所以使用的时候要非常小心. 深翻50cm以上是以为树根是往深里长; 下面没有氧气, 根会长吗?
4. 根部整理 --- 图1见到的树体已經好像一根烂木头, 大部份的结构根和吸收根都早被砍掉了, 树体还能赖以为生的是靠内部贮藏的水份和养分, 如果日后新根不能及时的长出来抽水, 或新叶片不及时长出来补充养分, 那整树死亡只是意料中之事, 谁说都不能制止. 大面积的切根会容易造成腐烂, 令本来已經被重创的树体百上加斤.
5. 使用生根剂 --- 生根粉对草本植物比木本植物有效得多, 千万不要把温室技术和大田种栽混为一谈.
6. 盖地膜 --- 如果采用塑料薄膜, 怎样透水透气? 薄膜的厚度有限, 保温吗? 根部不呼吸, 有如泡在水里, 会长吗？
7. 树干缠薄膜 --- 从图4看来, 从泥面到1米高, 薄膜是紧包著树干, 算是发出的小芽也会被压扁. 此外, 薄膜顶部是打开通风的, 怎样保温保湿？
8. 揭膜 --- 我们要问为何要在离地1米左右的树干部份发芽去制造枝条, 这些枝条长大后不会防碍通道吗？
9. 洒水 --- 对大部份乔木来讲, 吸水的部份是根, 而不是树皮. 光浇湿树皮而不长根, 行吗？
国内在移苗技术上, 走的方向与国际不同, 只要各方能够座下来谈, 也没有解决不了的事情吧 ！
谨此致意!
国际树木学会 中华地区分会 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 (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)
专业调解及谈判学会 注册调解员 (www.wegomediation.org.hk)
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Attached is a recent article from China describing how a "Senior Horticulturist" would transplant Fraxinus hupehensis as landscaping tree in the field.
From the given information, it can be seen that the mature trees would come in bare root with topping & heavy root pruning. They were to be planted in a medium of sand of minimum thickness of 50cm. The planting ground was to be tilted to a depth of more than 50cm before before putting on the sand. Then the roots were to be hard-pruned further to remove any unwanted portion, before installation.
At installation, a slurry of root hormone was to be mixed in with the backfill. After watering for 5-7 days after installation, a plastic membrane was to be placed on top of the backfill to "increase the soil temperature" to enhance root development. Another set of plastic membrane was to wrap round the trunk from ground to about 1 m height, to "retain moisture on the bark surface", & to "encourage budding". This membrane was not to be removed to until all budding has finished.
As for watering, it should begin after mid-April, at a frequency of twice a day. "Do not give too much water", the author said, "It may rot the roots". "Just wet the bark", he said again.
With all these "expert advice", the author reckoned that the transplanting success would be "high", as compared to some 30% of which he had seen elsewhere. He also recommended that "Daily inspection is crucial. Kill the problem on the spot is the key."
Good luck to anyone following this "expert's" instructions. A true Arborist would do it in a rather different way.
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)
Certified Mediator of the Society of Certified Mediators and Negotiators (http://www.wegomediation.org.hk/)
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
会员们:
附上的是一篇最近在国内发表的有关移植 "对节白腊" 的文章, 本分会将其与已知的树艺学问作比较, 希望各会员可以从中得益.
文中提出大概有9个要点, 我们逐一分享如下：
1. 选址 --- 我们同意泡水的栽种点是不好, 但不保水的栽种点同样是不好.
2. 沙栽 --- 我们认为采用沙栽, 会导致日后根系不稳, 风中容易倒塌; 沙子的保水保肥能力低, 最好不要用.
3. 坡地、平地栽植 --- 使用挖土机, 走过的地方会把泥土压成板结, 不透水透气, 所以使用的时候要非常小心. 深翻50cm以上是以为树根是往深里长; 下面没有氧气, 根会长吗?
4. 根部整理 --- 图1见到的树体已經好像一根烂木头, 大部份的结构根和吸收根都早被砍掉了, 树体还能赖以为生的是靠内部贮藏的水份和养分, 如果日后新根不能及时的长出来抽水, 或新叶片不及时长出来补充养分, 那整树死亡只是意料中之事, 谁说都不能制止. 大面积的切根会容易造成腐烂, 令本来已經被重创的树体百上加斤.
5. 使用生根剂 --- 生根粉对草本植物比木本植物有效得多, 千万不要把温室技术和大田种栽混为一谈.
6. 盖地膜 --- 如果采用塑料薄膜, 怎样透水透气? 薄膜的厚度有限, 保温吗? 根部不呼吸, 有如泡在水里, 会长吗？
7. 树干缠薄膜 --- 从图4看来, 从泥面到1米高, 薄膜是紧包著树干, 算是发出的小芽也会被压扁. 此外, 薄膜顶部是打开通风的, 怎样保温保湿？
8. 揭膜 --- 我们要问为何要在离地1米左右的树干部份发芽去制造枝条, 这些枝条长大后不会防碍通道吗？
9. 洒水 --- 对大部份乔木来讲, 吸水的部份是根, 而不是树皮. 光浇湿树皮而不长根, 行吗？
国内在移苗技术上, 走的方向与国际不同, 只要各方能够座下来谈, 也没有解决不了的事情吧 ！
谨此致意!
国际树木学会 中华地区分会 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 (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)
专业调解及谈判学会 注册调解员 (www.wegomediation.org.hk)
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Attached is a recent article from China describing how a "Senior Horticulturist" would transplant Fraxinus hupehensis as landscaping tree in the field.
From the given information, it can be seen that the mature trees would come in bare root with topping & heavy root pruning. They were to be planted in a medium of sand of minimum thickness of 50cm. The planting ground was to be tilted to a depth of more than 50cm before before putting on the sand. Then the roots were to be hard-pruned further to remove any unwanted portion, before installation.
At installation, a slurry of root hormone was to be mixed in with the backfill. After watering for 5-7 days after installation, a plastic membrane was to be placed on top of the backfill to "increase the soil temperature" to enhance root development. Another set of plastic membrane was to wrap round the trunk from ground to about 1 m height, to "retain moisture on the bark surface", & to "encourage budding". This membrane was not to be removed to until all budding has finished.
As for watering, it should begin after mid-April, at a frequency of twice a day. "Do not give too much water", the author said, "It may rot the roots". "Just wet the bark", he said again.
With all these "expert advice", the author reckoned that the transplanting success would be "high", as compared to some 30% of which he had seen elsewhere. He also recommended that "Daily inspection is crucial. Kill the problem on the spot is the key."
Good luck to anyone following this "expert's" instructions. A true Arborist would do it in a rather different way.
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)
Certified Mediator of the Society of Certified Mediators and Negotiators (http://www.wegomediation.org.hk/)
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
Thursday, March 8, 2012
ISA HK/China --- China tree News (Live tree as prop) (用活树作支撑)
国内朋友请查閱 "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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
附上的是一篇近期在國內已发表的有关使用 "活体支撑古树" 的文献, 如果这个方法行得通, 将会是树艺界里面的另一个伟大的 "发明创造".
从文中所看到的, 似乎是围绕著两个重点:
1. "通过年轻树体输送的营养让古树生长得更健壮"
2. "这些活力木支撑和古树融成一体"
由此看来, 有关人仕是认为一棵生长了近百年的古树, 它的树皮会与一棵几年生的幼年树的树皮系統互相融合在一起, 然后双方的 "形成层" 会互通互长, 令幼年树里面由叶片所产生的营养糖份, 有足够的液压去输送到古树里面的维管束系統, 情况就好像接驳水管一样. 可能有人会问, 这有否违反了最常见的小苗扦插原理?
另外, 当一棵小树长在一棵大树下面, 都给遮阳了, 小树还会有足够的阳光去进行 "光合作用" 去制造充足的糖份来提供大树使用吗?
在树艺学里面的修剪理论里, 当两条枝条重叠在一起的时候, 我们把它叫做 "交叉枝", 一般会将其中一条剪掉, 让它们不会因为风力摩擦而制造伤口. 而使用 "活体支撑" 会明显的制造 "交叉枝".
树艺学是一门活用科学, 不光讲个人经验, 但追求科学实践, 与国内的做法相比, 可能就是所谓的 "内外有别" 吧 !
谨此致意!
国际树木学会 中华地区分会 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 )
专业调解及谈判学会 注册调解员 (http://www.wegomediation.org.hk/ )
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Jo ining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com/ , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Attached is a recent China article on using a live tree as prop for a mature tree. It is said to be an innovation by their tree care specialist to resolve a major problem in supporting heavy lateral branches for especially senile tree in decline. It is also said that the contacting point would probable merge over to turn the two trees into one, & the sap flow of the younger tree would provide nutrients to the mature tree to benefit its growth.
When an Arborist is asked to conduct Crown Cleaning, removal of Crossing Branches would be one of the designated tasks, as such lapping over would create wound at the contacting point to promote future failure. It is also not known that the branch of a mature tree can merge over with that of a young tree as in Grafting. The canopy coverage of the mature tree is likely to diminish the Photosynthesis of the smaller tree under, & the smaller tree would actually grow weaker than the bigger tree under such condition.
When it comes to tree care, China is full of surprises. Yet when ISA HK/China wants to share our knowledge with those "Tree Experts" there, most would usually walk away. Such is the difficulty in bringing ISA into China. Such is the reality to confront us to talk to them.
Any suggestion?
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 )
Certified Mediator of the Society of Certified Mediators and Negotiators (http://www.wegomediation.org.hk/ )
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
--------------------------------------------------------------------------------
会员们:
附上的是一篇近期在國內已发表的有关使用 "活体支撑古树" 的文献, 如果这个方法行得通, 将会是树艺界里面的另一个伟大的 "发明创造".
从文中所看到的, 似乎是围绕著两个重点:
1. "通过年轻树体输送的营养让古树生长得更健壮"
2. "这些活力木支撑和古树融成一体"
由此看来, 有关人仕是认为一棵生长了近百年的古树, 它的树皮会与一棵几年生的幼年树的树皮系統互相融合在一起, 然后双方的 "形成层" 会互通互长, 令幼年树里面由叶片所产生的营养糖份, 有足够的液压去输送到古树里面的维管束系統, 情况就好像接驳水管一样. 可能有人会问, 这有否违反了最常见的小苗扦插原理?
另外, 当一棵小树长在一棵大树下面, 都给遮阳了, 小树还会有足够的阳光去进行 "光合作用" 去制造充足的糖份来提供大树使用吗?
在树艺学里面的修剪理论里, 当两条枝条重叠在一起的时候, 我们把它叫做 "交叉枝", 一般会将其中一条剪掉, 让它们不会因为风力摩擦而制造伤口. 而使用 "活体支撑" 会明显的制造 "交叉枝".
树艺学是一门活用科学, 不光讲个人经验, 但追求科学实践, 与国内的做法相比, 可能就是所谓的 "内外有别" 吧 !
谨此致意!
国际树木学会 中华地区分会 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 )
专业调解及谈判学会 注册调解员 (http://www.wegomediation.org.hk/ )
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Jo ining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com/ , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Attached is a recent China article on using a live tree as prop for a mature tree. It is said to be an innovation by their tree care specialist to resolve a major problem in supporting heavy lateral branches for especially senile tree in decline. It is also said that the contacting point would probable merge over to turn the two trees into one, & the sap flow of the younger tree would provide nutrients to the mature tree to benefit its growth.
When an Arborist is asked to conduct Crown Cleaning, removal of Crossing Branches would be one of the designated tasks, as such lapping over would create wound at the contacting point to promote future failure. It is also not known that the branch of a mature tree can merge over with that of a young tree as in Grafting. The canopy coverage of the mature tree is likely to diminish the Photosynthesis of the smaller tree under, & the smaller tree would actually grow weaker than the bigger tree under such condition.
When it comes to tree care, China is full of surprises. Yet when ISA HK/China wants to share our knowledge with those "Tree Experts" there, most would usually walk away. Such is the difficulty in bringing ISA into China. Such is the reality to confront us to talk to them.
Any suggestion?
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 )
Certified Mediator of the Society of Certified Mediators and Negotiators (http://www.wegomediation.org.hk/ )
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
--------------------------------------------------------------------------------
Thursday, March 1, 2012
ISA HK/China --- TVB 东张西望 on Tree Climbing (香港无线电视裴翠台 "东张西望" 节目访问 "攀树师")
国内朋友请查閱 "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。 任何人仕都可以申请免費加入本分会, 本分会员名单从不公开, 有意者请将真实姓名、年龄、单位、职衔、最高学历、电邮和手机号传真到 +852-2679-5338 便可. 如有查询, 请电邮至 egc@netvigator.com 。本分会的一切发表内容, 谨供参考。
会员们:
本分会早前为 香港无线电视 裴翠台 "东张西望" 节目录影的有关 "攀树师" 的片段, 将会在今天晚上播出:
频道 --- 香港无线电视裴翠台
节目 --- 东张西望
日期 --- 2012年2月29日
时间 --- 19.30 时开始
不能现场收看节目的, 请在一日后登入 http://mytv.tvb.com/variety/scoop/127847/#page-1 搜寻查看.
谨此致意!
国际树木学会 中华地区分会 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 )
专业调解及谈判学会 注册调解员 (http://www.wegomediation.org.hk/)
“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. Anyone can join ISA HK/China by providing their full name, age, organization, position, highest education, email & mobile no. to egc@netvigator.com . Joining is free & withdrawal is at an email notice. Station Membership is never publicly disclosed. Please note that Station Mail is sometimes given in Blog at http://isahkchina.blogspot.com , although images are usually not attached due to size. All our information is for reference without liabilities. ***
Dear Station Members,
Please kindly note that a Cantonese TV program on Certified Tree Workers will be shown at 7.30pm on March 15, 2012) in Jade Channel of TVB of HK.
The Station Manager & TCHK climbers will explain the benefits of tree climbing & demonstrate work safety in this prime time TV session. It is anticipated to be viewed by millions of local residents in HK & Southern China.
Don't miss it!
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 )
Certified Mediator of the Society of Certified Mediators and Negotiators (http://www.wegomediation.org.hk/ )
"Providing treatment without in-depth diagnosis & research support is professional misconduct. "
"Casual tree assessor delivers wanton tree assessment. Mother Nature makes the rules."
--------------------------------------------------------------------------------
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