古树名木资源特征和空间格局分析——以浙江省桐庐县为例

Study on the Resource Characteristics and Spatial Distribution of Ancient and Famous Trees:Taking the Tonglu County of Zhejiang Province as an Example

以2016年浙江省桐庐县古树名木普查基础数据作为研究数据,分析了古树名木分布特点、乡镇分布、生长场所、树种等资源特征,并采用最近邻点指数、核密度、集中度与均衡度分析的方法,利用ArcGIS10.2空间分析工具,研究了浙江省桐庐县的古树名木的空间分布规律。研究结果表明,浙江省桐庐县古树名木数量众多、树种多样、珍稀树种丰富,呈现以桐君街道、城南街道为主要核心空间集聚分布,对应的地理集中化指数G为32.10,大于理想状态下的地理集中化指数。本文的研究成果能够为浙江省桐庐县古树名木保护、城镇发展规划提供参考。

Based on the general survey data of ancient and famous trees in Tonglu County of Zhejiang Province in 2016,the distribution characteristics,township distribution,growing places,tree species,and other resources of ancient and famous trees were analyzed.The spatial distribution law of ancient and famous trees in Tonglu County of Zhejiang Province was studied by using ArcGIS10.2 spatial analysis tool with the methods of the nearest neighbor index,nuclear density,concentration,and equilibrium analysis.The results showed that there were many famous trees,various species,and rich rare trees in Tonglu county of Zhejiang province.The main spatial concentration distribution was Tongjun street and Chengnan street.The corresponding geographical concentration index G is 32.10,which is larger than the ideal geographical concentration index.The research results can provide references for the protection of ancient and famous trees and the planning of urban development in Tonglu county of Zhejiang province.