基于GIS的城市表层土壤重金属污染分析  

Analysis of Heavy Metal Pollution in Urban Topsoil Based on GIS

作　　者：邵禹豪 薛顺奎 SHAO Yuhao;XUE Shunkui(School of Geographic Science,Nanjing University of Information Science and Technology,Nanjing,Jiangsu Province,210044 China)

机构地区：[1]南京信息工程大学地理科学学院,江苏南京210044

出　　处：《科技创新导报》2021年第18期48-51,共4页Science and Technology Innovation Herald

摘　　要：随着城市化进程加快,城市用地面积不断增加,功能区种类繁多,重金属污染日渐严重。本文首先通过构造泰森多边形划分功能区,再使用反距离权重内插法对8种重金属元素进行空间内插,获取重金属空间分布状况,随后通过因子聚类分析各种重金属之间的相关关系,进而进行污染等级排序和评定。With the acceleration of urbanization,urban land area is increasing,there are many kinds of functional areas,and heavy metal pollution is becoming more and more serious.In this paper,Tyson polygon is constructed to divide the functional area,and then the inverse distance weight interpolation method is used to spatially interpolate 8 kinds of heavy metal elements to obtain the spatial distribution of heavy metals,and the correlation between various heavy metals is analyzed by factor clustering,so as to sort and evaluate the pollution level.

关 键 词：土壤重金属 空间内插 因子聚类 最小二乘法 

分 类 号：X53[环境科学与工程—环境工程]