评估截干处理对大树生长和形态结构的影响--以南洋楹、非洲楝和白兰为例

摘要

Through combining related theories of tree physiology, this paper assesses growth characteristics of three quick growing tree species includingFalcataria moluccana,Khaya senegalensis andMichelia alba after topping in three universities in Guangzhou, and discusses the influence of topping on their physiological and morphological changes. Result shows that topping hazards trees and their root seriously by destroying the tree structure, making large wound so that it doesn’t reduce the potential risk of trees. Risk from trees in large size or the tree itself should be removed with proper measures.%结合树木生理学相关原理，评估广州市3所大学校园内南洋楹Falcataria moluccana、非洲楝Khaya senegalensis以及白兰Michelia alba3个速生树种截干后的生长特点，探讨截干对大树生理及形态的影响。结果显示，截干破坏树体结构，制造难以愈合的大型截口，导致根系衰弱，严重影响树木健康，并不能减少危险性树木的安全隐患。对于体量较大的危险性树木，应当采取恰当措施降低树木风险，必要时予以移除。