【摘要】 根据1988年全国农业环境质量状况调查资料,选取我国部分商品粮基地县土壤重金属污染数据(污染指数),通过多元统计分析,揭示了各商品粮基地土壤重金属污染的差异与分类.建立模糊综合评判模型对各商品粮基地土壤污染状况进行了综合评价,得到了各商品粮基地土壤污染程度的相对排序.更多还原

【Abstract】 In order to inquire into the environmental quality of commodity grain bases of China,the paper selects five heavy metal pollution data in some commodity grain base counties of China to build up analysis model and obtain the difference map of heavy metal in 77 commodity grain base counties,for analysis of the pollution difference; meanwhile, establishes the Fuzzy comprehensive evaluation method to evaluate the extent of heavy metal pollution in different grain bases and obtain the relative order of heavy metal pollution.更多还原