模糊数学在小秦岭某金矿区土壤重金属污染评价中的应用  

Application of fuzzy mathematics method to soil heavy metal pollution evaluation in a gold mining area of Xiao Qinling

作　　者：张开军[1,2] 魏迎春[3] 徐友宁[4] 

机构地区：[1]北京大学地球与空间科学学院,北京100871 [2]中国地质调查局,北京100037 [3]中国矿业大学(北京)地球与测绘工程学院,北京100083 [4]西安地质矿产研究所,陕西西安710054

出　　处：《水文地质工程地质》2013年第5期124-128,共5页Hydrogeology & Engineering Geology

摘　　要：在系统分析研究区土壤重金属元素含量特征、分布特征及变异特征的基础上,运用模糊数学法,以Hg、Pb、Cd、Cr、As、Cu、Zn等7种重金属元素作为评价因子,计算各评价因子的权重,构建隶属函数,建立模糊综合评价模型。用此模型对2009年采集的土壤样进行计算,结果显示研究区38.36%的土壤受到中度以上污染。In this paper,characteristics of content,distribution and variation of seven heavy metals(hydrargyrum,plumbum,cadmium,arsenic,chromium,copper and zinc) were analyzed in the study area.Based on the analyses,the fuzzy mathematical method was used to construct the membership functions and a fuzzy comprehensive evaluation model was established.By using this model,soil samples data collected in 2009 in the study area are calculated.The results show that about 38.36% of the soil in the study area was moderate or severely polluted.

关 键 词：重金属污染 模糊数学 污染评价 小秦岭地区 

分 类 号：X825[环境科学与工程—环境工程]