基于物元可拓法的土壤重金属污染评价  

Evaluation of Soil Heavy Metal Pollution Based on the Matter-element Extension Method

作　　者：赵艳玲[1] 石娟娟[1] 何厅厅[1] 刘亚萍[1] 冉艳艳 

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083

出　　处：《金属矿山》2014年第2期159-165,共7页Metal Mine

基　　金：教育部新世纪优秀人才支持计划项目(编号:NCET-12-0964)

摘　　要：土壤重金属污染具有典型的模糊性和不确定性。为准确地评估土壤重金属污染情况,利用物元理论、可拓理论和关联函数建立了土壤重金属污染评估的物元可拓模型。在此基础上,选择Cd、Pb、Cr、Hg、Cu和Zn 6个污染因子作为评价指标,对某金矿区46个采样点进行污染评价。结果表明,研究区46个采样点中,清洁级样点有23个,占总采样点的50%,尚清洁级样点11个,占总采样点的23.9%,轻污染级样点11个,占总采样点的23.9%,中污染采样点1个,占总采样点的2.2%。通过与4种传统的经典污染评价方法比较可知,物元可拓法用于土壤重金属污染评价是可行的,运用Matlab2010b进行评价结果计算,操作简便快捷,另外,物元可拓法在评价过程中避免了人为因素的影响,实现了对参评因子的量化处理,是进行土壤重金属污染评价的一种新方法。The soil heavy metal pollution has typical characteristics of fuzziness and uncertainty. In order to accurately evaluate the situation of soil heavy metal pollution, The matter-element extension model for evaluating soil heavy metal pollution was established based on theory of matter-element, extension theory and correlation function. Furthermore, pollutions from 46 sampling points in Goldfield were evaluated by choosing Cd, Pb, Cr , Hg, Cu and Zn as evaluation factors. The results showed that there were 23 sampling points at clean level among the 46 sampling points chosen from Goldfield, accounting for 50% of the total sample points, 11 at light clean level, accounting for 23. 9% of the total sampling points, and 11 at light pollution level and 1 at middle pollution level, accounting for 23.9% and 2.2% of the total sampling points respectively. Comparing with other four classical methods, it is concluded that using matter-element extension method to evaluate the situation of soil heavy metal pollution is feasible. It is simple and efficient to calculate the evaluation results with Matlab201Ob. In addition, matter-element extension method avoided the influence of artificial factors in the process of evaluation and realized the quantitative processing with regard to these factors. Thus, it is a new and ideal method in evaluating heavy metal pollution of soiL

关 键 词：物元可拓法 土壤重金属 污染评价 关联函数 

分 类 号：X53[环境科学与工程—环境工程]