南京市老城区法桐行道树健康状况研究

通过研究南京市老城区内法桐行道树的健康状况，提出行道树健康生长的影响因素，为行道树的养护管理提供参考。对南京市老城区内10条主要道路进行基础调查，在因子分析法建立健康评价综合模型的基础上，采用单因素方差分析法和多重比较法分析不同道路间健康综合评分和健康评价指标的差异。结果表明，各道路法桐行道树生长结构良好，整体健康综合评分为0.00,中等健康等级(26.2%)占比最大，其次为健康等级，占比21.5%,濒死等级占比20.6%,亚健康等级占比19.7%,不健康行道树占比12.0%,整体健康状况中等水平。不同道路法桐行道树间的健康综合评分与评价指标均具有显著差异(P<0.05),健康状况具体表现为：北京西路>江东中路>中山路>中央路>中山东路>升州路>广州路>汉中路>虎踞北路>珠江路。行道树长势、损伤情况等是影响其健康状况的重要因素，行道树所面临的主要问题集中在地表铺装与土壤硬化、病虫害、夜间光照以及修剪技术等方面，同时断枝倒伏等情况的发生也构成了对城市空间的安全隐患。适用于行道树的评价方法为因子分析法结合完整的评价指标体系，包含树...

Structure and Health Status of Platanus acerifolia Street Trees in Old District of Nanjing

The influencing factors of health growth of street trees were proposed by studying the health status of Platanus acerifolia street trees in the old urban area of Nanjing,so as to provide reference for the maintenance and management of street trees.Based on the basic investigation of 10 main roads in the old urban area of Nanjing,the comprehensive health evaluation model was established by factor analysis method,and the difference of comprehensive health score and health evaluation index between different roads were analyzed by single factor analysis of variance and multiple comparison method.The results showed that the growth structure of P.acerifolia street trees was good.The overall health comprehensive score was 0.00,the medium healthy level (26.2%) accounted for the largest proportion,followed by healthy level (21.5%),the proportion of dying level was 20.6%,sub-healthy level was 19.7%,unhealthy street trees accounted for 12.0%,and the overall health status was medium.There were significant differences in the comprehensive health scores and evaluation indexes among the trees on different roads (P<0.05),the specific performance of health status was in the order of Beijing West Road>Jiangdong Middle Road>Zhongshan Road>Central Road>Zhongshan East Road>Shengzhou Road>Guangzhou Road>Hanzhong Road>Huju North Road>Zhujiang Road.Growth and damage of street trees were important factors affecting their health status.The main problems faced by street trees were focused in surface pavement and soil hardening,pests and diseases,night lighting and pruning technology.The occurrence of broken branches and lodging also constituted a potential safety hazard to urban space.The evaluation method suitable for street trees is factor analysis combined with a complete evaluation index system,including tree growth,tree pool and pavement type,pest and disease damage,gas and light pollution,and the distance between surrounding buildings and facilities,from which the health status can be fully understood.