基于突变级数法的福州市某区土壤重金属污染综合评价

以福州市某区土壤为研究对象,采用突变级数法对福州市某区土壤重金属污染进行评价,依据主成分分析对评价因子进行选择,整个评价指标体系避免了人为确定权重的主观性.结果表明:福州市某区土壤重金属污染目前整体呈现一个较为良好的态势,但有部分地区处于"病态"状况.距离该区中心较近的西客站、李园天桥、远洋以及于山、东街口到靠近郊区的燎原、三角埕、鼓山等地的污染的综合隶属值呈递增的趋势,表明距离城市中心越近的土壤重金属污染越为严重.

Application of the catastrophe progression method to the integrative evaluation of the heavy mental soil pollution in one district of Fuzhou

Using the soil samples of one district of Fuzhou as the research object and the principal component analysis for the selection of evaluation factors,this research uses the catastrophe progression method to evaluate its heavy mental soil pollution and tries to avoid the subjectivity of artificial weigh by using a workable evaluation index system. The results show that the heavy mental soil pollution in this area is not serious on the whole,but there is pollution in some places such as West Railway Station,Liyuan Overpass,Yuanyang,Yushan,and East Street close to downtown Fuzhou as well as Liaoyuan,Sanjiaocheng and Gushan near the suburbs. Generally speaking,the closer to the downtown area,the heavy mental soil pollution is more serious.