模糊数学和污染指数法在土壤重金属污染中的应用  

Application of Fuzzy Mathematics and Contamination Index Method to Evaluation of Soil Heavy Metals Pollution

作　　者：翟航[1] 卢文喜[1] 杨威[1] 李俊[1] 

机构地区：[1]吉林大学环境与资源学院,长春130026

出　　处：《土壤》2008年第2期212-215,共4页Soils

基　　金：中国地质调查局项目<四平-长春-吉林经济带主要城市生态地球化学评价>(基[2005]011-08)资助

摘　　要：依据土壤质量评价中所存在的模糊性和渐变性的特点,采用模糊数学和污染指数法对长春市土壤中重金属(Pb、Cu、Ni、Zn)综合污染状况进行环境质量评价,并进一步对各评价因子在不同功能区的污染程度和来源进行分析。结果表明,长春市土壤环境质量基本上为二级水平,已超过中国土壤自然背景值。各功能区土壤环境优劣顺序为工业区>住宅区>郊区耕地>公园>开发区;不同功能区各评价因子在土壤中污染水平差异较大,主导污染因子为Ni,已经达到中度污染水平,除此之外,Pb污染较重。In light of the characters of fuzziness and shadowing of soil quality evaluation, fuzzy mathematics and contamination index method were applied to environmental quality evaluation of heavy metal pollution of the soil in Changchun, and analysis was done of, degree and source of the pollution of every evaluated factor in different functional zones. Results showed that the soil environment quality of Changchun could basically be rated Grade II, above the natural background value of the Chinese soil. In terms of soil environment quality, the functional zones could be lined in a decreasing order of industrial area 〉 settlement 〉 farmland 〉 park 〉 development area; and varied sharply in pollution degree of every evaluated factor in the soil. However, Ni was the dominant pollutant, reaching a moderate level of pollution, and followed by Pb.

关 键 词：土壤重金属污染 模糊数学 污染指数 污染评价 

分 类 号：X53[环境科学与工程—环境工程]