摘要
文章采用主成分分析法确定土壤重金属环境质量评价权重,并对超标倍数法、双权重超标赋权法和主成分分析法3种方法进行比较。通过对贵阳市城市土壤中8种重金属污染物进行相关性分析,运用模糊综合评价法对其污染状况进行评价,并对不同权重值所做的评价进行比较。得出结论:主成分分析法从土壤中各重金属的联系出发,可以更好地反映重金属地相互关系;贵阳市城市土壤质量达到中国土壤环境质量标准二级标准,基本不会对植物和环境造成危害和污染。
In this paper,the method of multiple exceeds the weighting method and dual weight exceeds the principal component analysis method to determine the weights of the three,and carries on the comparison.Fuzzy Comprehensive Evaluation evaluated the pollution feature of eight elements,comparing evaluation results from different weights.The results as bellow: Guiyang city soil quality reaches the standard of soil environmental quality of soil quality standard,the basic level of plants and environmental damage and pollution.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2013年第S1期355-360,共6页
Environmental Science & Technology
基金
国家"十二五"科技支撑计划(2012BAD14B02-6)
贵州省科学技术基金(黔科合J字[2011]2045号)
关键词
模糊综合评价
城市土壤
权重
主成分分析
fuzzy comprehensive evaluation
urban soil
weight
principal component analysis
