摘要
通过对芜湖市工业区、商业区、休闲区和居住区土壤重金属污染现状的调查与分析,分别以本地区自然土壤重金属元素自然含量的平均值和国家土壤环境质量标准作为评价标准,计算出各功能区土壤单因子污染指数,并采用主成分分析法确定权重,对各功能区的土壤环境质量进行综合评价。结果表明:芜湖市各功能区土壤Cd、Hg、Cu、Pb、Cr、Zn含量均超过本地区自然土壤重金属元素自然含量的平均值。其中工业区土壤中Cd、Hg和Cu,商业区土壤中Cd和Hg,休闲区和居住区土壤中Cd均超过国家土壤环境质量标准。Cu、Hg、Pb、Cr、Cd污染均表现为工业区最大,商业区次之,Zn在各功能区含量差异不大。土壤中重金属含量上层高于下层,且在商业区和居住区差异明显。土壤环境质量居民区尚清洁,休闲区和商业区中度污染,工业区重度污染。
On the basis of the data on Cd,Hg,Cu,Pb,Cr,Zn heavy metal contents of soils sampled from the industrial zone,commercial area,recreational area and residential area in Wuhu city,Anhui province,the status of soil pollution by heavy metals was studied by use of background contents of these elements under the natural soil condition and the national quality standard of soil environment.Meanwhile,principal component analysis was applied to a comprehensive evaluation of the quality of soil environment.The study indicates that on the whole the most of heavy metal existing in the sample soils quite resulted in pollution.Cd,Hg,Cu in industrial soil,Cd,Hg in the business district soil,and Cd in the recreation area and residential soil are almost in excess of the national standards of soil environmental quality.In general,the pollution is more serious in industrial than the other regions.
出处
《水土保持学报》
CSCD
北大核心
2010年第2期210-213,217,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金项目(40901258)
安徽省教育厅青年教师资助项目(2007jq1063zd)
江苏省社会发展项目(BS2007064)
安徽师范大学土地资源管理特优强资助项目
关键词
土壤污染
重金属
功能区
芜湖市
soil pollution
heavy metal
functional areas
Wuhu city
