基于模糊综合评价的湖水重金属污染评价与分析  

POLLUTION EVALUATION OF HEAVY METALS IN LAKE WATER BASED ON FUZZY COMPREHENSIVE ASSESSMENT

作　　者：孙清展[1] 臧淑英[1] 张囡囡[1] 

机构地区：[1]哈尔滨师范大学黑龙江省普通高等学校地理环境遥感监测重点实验室,哈尔滨150025

出　　处：《环境工程》2012年第1期111-115,共5页Environmental Engineering

基　　金：国家自然科学基金重点项目(41030743);国家自然科学基金青年项目(41001243)

摘　　要：采用模糊综合评价法对仙鹤湖湖水重金属的污染状况进行评价研究。为了突出外界有毒物质的影响,发展了模糊综合-加权平均模型,提高了评价结果的精度。模糊评价结果表明仙鹤湖水质有轻度重金属污染,其中As、Cd和Pb的污染相对较重。通过对分值化评价结果进行参数估计,知仙鹤湖水质符合Ⅲ类水质及以上标准的可信度超过95%,Ⅱ类水质及以上标准的可信度为80%以上。通过比较,灰色关联分析法的评价结果与模糊综合评价法的评价结果基本一致。Fuzzy comprehensive assessment was applied to evaluate the heavy metals pollution of Xianhe Lake. In order to highlight the influence of external toxic substances, the fuzzy comprehensive-weight sets model was developed, and the accuracy of its evaluation result is also raised. Fuzzy evaluation results showed that the water of Xianhe Lake was with mild heavy metal pollution. Among them the As,Cd and Pb were found to be the most serious. Based on the parameter estimation of the evaluation results, it is known that the credibility of Xianhe Lake water level ]]I and above is 95% , and the credibility of standard level II and above is more than 80%. Through the verification, the results of the evaluation of gray correlation analysis method and those of fuzzy comprehensive assessment are basically the same.

关 键 词：模糊综合评价 湖水重金属污染 加权平均 仙鹤湖 

分 类 号：X824[环境科学与工程—环境工程]