摘要
论述了基于熵权的改进密切值法的建模步骤,将其应用于运河杭州段底泥污染的评价中,并将评价结果与属性识别法进行比较。结果表明,底泥各层(浮泥层、淤泥层、基底层)均属于轻度污染,与属性识别法的评价结果存有差异;底泥各层污染程度为浮泥层>淤泥层>基底层,与属性识别法的评价结果一致。通过分析各污染因子(As、Hg、Cu、Pb、Zn、Cd、Cr、OP)在底泥各层的污染程度、权重大小及对底泥污染的综合影响,说明基于熵权的改进密切值法的评价结果比属性识别法更合理、更为可靠,用于评价底泥污染类型是可行的。
The procedure of modified intimate data method based on entropy authority are discussed. The method is applied to the evaluation of bottom sludge pollution of the Hangzhou segment of the canal. And the evaluation result is compared with that of attribute identity model. It is indicated that different bottom sludge layers（surface layer, sullage layer, and bottom layer）are all belong to low - grade pollution. Comparatively, the evaluation result of modified intimate data method is different from that of at- tribute identity model. The pollution degrees of different bottom sludge layers are surface layer 〉 sullage layer 〉 bottom layer, which is identical with the evaluation result of attribute identity model. By analyzing the pollution degree, the scale and the combined effects of each pollution factor （As, Hg, Cu, Pb, Zn, Cd, Cr, OP） in the different bottom sludge layers, it is showed that the evaluation result of the modified intimate data method based on entropy authority is more reasonable and credible than that of attribute identity model, and viable to evaluate the types of bottom sludge pollution.
出处
《环境科学与管理》
CAS
2008年第5期169-172,共4页
Environmental Science and Management
基金
福建省科技厅资助项目(03WE289)
关键词
熵权
密切值
底泥污染
运河杭州段
评价
entropy authority
intimate data
bottom sludge pollution
Hangzhou segment of the canal
evaluation
