摘要
行道树安全性评估是城市树木安全防护的重要内容,采用科学有效的方法评估行道树安全现状,对城市安全精细化管理及行道树有机更新具有重要的现实意义.以南京市主城区法桐行道树为例,通过整合法桐行道树多种出险记录,构建了南京市法桐行道树安全性调查数据库;通过计算不同时空维度的出险频度来评价法桐行道树安全性;利用GIS空间自相关分析方法,探究了法桐行道树路段出险频度的空间分布特征.结果显示,玄武区、鼓楼区、秦淮区是南京市法桐行道树的高频出险行政区,其中玄武区总出险频度最高,达到5.2%.玄武区内北京东路-中山路-中山东路-太平北路所围街区是法桐行道树逐年高频出险路段集中区域.法桐行道树出险路段在空间上存在显著热点,其中鼓楼区的出险热点数量最多,达到23条,主要集中在中山路沿线路段.法桐行道树出险的主要原因为断枝和车撞树,分别占总出险事件的38.34%和15.45%.针对重点出险区域出险原因提出相应建议,为未来行道树的城市管理提供参考.
Street tree safety assessment is an important part of urban tree safety protection.Using scientific and effective methods to assess the current status of street tree safety has important practical significance for the refined management of urban safety and the organic renewal of street trees.In this study,taking the Platanus orientalis street trees in the main districts of Nanjing city as an example,by integrating various accident records,the safety survey database of the street trees in Nanjing city was constructed.The accident frequency of different spatiotemporal dimensions in the main districts was calculated to evaluate the safety of Platanus orientalis street trees,the GIS autocorrelation analysis method was used to explore the spatial distribution characteristics of the accident frequency of the road sections of Platanus orientalis.The results show that Xuanwu District,Gulou District,and Qinhuai District are the areas with high-frequency of accident Platanus orientalis street trees,and Xuanwu District has the highest frequency of accidents,reaching 5.2%.The block surrounded by Beijing East Road-Zhongshan Road-Zhongshan East Road-Taiping North Road in Xuanwu District is a concentrated area of road sections with high-frequency accidents year by year.There are significant hot spots in space in the accident sections of Platanus orientalis street trees,among which Gulou District has the largest number of hot spots,reaching 23,and the highest hot spots are mainly concentrated in the sections along Zhongshan Road.The main reasons for the accident of Platanus orientalis street trees are broken branches and vehicles hitting trees,accounting for 38.34%and 15.45%of the total accidents,respectively.Corresponding suggestions are put forward for the reasons for the accidents in key areas,in order to provide reference for the urban management of Platanus orientalis street trees in the future.
作者
董元彪
肖鹏峰
刘豪
吴悠绿
郭瑞
Dong Yuanbiao;Xiao Pengfeng;Liu Hao;Wu Youlü;Guo Rui(Key Laboratory for Land Satellite Remote Sensing Applications of Ministry of Natural Resources,Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology,School of Geography and Ocean Science,Nanjing University,Nanjing,210023,China)
出处
《南京大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第2期201-212,共12页
Journal of Nanjing University（Natural Science）
基金
国家自然科学基金(41871235)。
关键词
法桐行道树
出险频度
安全状况
空间自相关
南京市
platanus orientalis street trees
frequency of accident
safety status
spatial autocorrelation
Nanjing city
