基于VTA法及应力波诊断技术的行道树安全风险评估  

Risk Assessment for Street Tree Safety Based on VTA Method and Sound Wave Detection Technology

作　　者：程睿 黎国健 蒋慧 翁恩斌 Cheng Rui;Li Guojian;Jiang Hui;Weng Enbin(Shenzhen Fangge Ecological Environment Co.,Ltd.,Shenzhen 518048,Guangdong,China)

机构地区：[1]深圳市方格生态环境有限公司,广东深圳518048

出　　处：《中国城市林业》2024年第3期56-61,共6页Journal of Chinese Urban Forestry

基　　金：深圳市绿化管理处委托项目“深圳市主干道行道树木安全隐患调查评估”(2023020)。

摘　　要：为精细化管养城市树木并科学防控树木安全风险,采用VTA法及应力波诊断技术对深圳市3条主干道路行道树的安全风险状况进行评估。结果表明:1)存在安全风险的树木涉及37个树种,总计900余株,占比约4.20%,其中安全风险率超过10%的树种有阴香、马占相思、南洋楹、银合欢;2)树干病变情况比较严重的树种为阴香、南洋楹和马占相思,其中主干空洞率分别为57.65%、36.36%和26.67%,阴香和南洋楹的树干病变率随胸径的增大而呈上升趋势;3)树体机械损伤极易诱发树干腐朽空洞问题,在植株密度较大的阴蔽生境表现更严重。为此,建议从行道树日常管养、适生树种选择、安全隐患排查等方面采取安全风险防控措施。In order to ensure delicacy management of urban trees and promote the science-based risk control for tree safety,the paper uses the VTA method and stress-wave diagnostic technology to assess the safety risk of the street trees along three urban expressways in Shenzhen.The results show that:1)There are totally more than 900 trees with safety risk,which are related to 37 tree species and account for 4.20%of the total street trees.Among them,Cinnamomum burmanni,Acacia mangium,Falcataria falcata,and Leucaena leucocephala are the tree species whose proportion of trees with safety risks exceeds 10%;2)C.burmanni,F.falcate and A.mangium are the species suffering from relatively severe trunk lesion,while the trunk cavity rates of the three species reach 57.65%,36.36%,and 26.67%,respectively.The trunk lesion rate of C.burmanni and F.falcate increases with the increased diameter at Breast Height;and 3)Mechanical damage to trees is prone to inducing the trunk decay and cavity,especially in shaded habitats with high plant density.In this sense,recommendations are proposed to reduce the risk with control measures such as street tree management,selection of suitable tree species,and investigation of hazards.

关 键 词：行道树 树干空洞 应力波诊断 安全风险评估 

分 类 号：S687.1[农业科学—观赏园艺]