摘要
在水环境质量评价中,污染指标众多且具有不同属性。为了使评价结果尽可能多地体现这些属性,首先按指标集的不同属性分类对污染指标进行层次划分;根据可拓学理论,对每个子集进行可拓物元分析,进而得到综合水质评价结果。评价中,基于简单关联函数对各子集的污染指标进行相对重要程度排序,并用层次分析法确定指标权重。用该方法对卫河水质进行综合评价,结果表明,该区域水质类别为Ⅳ类水,水质污染比较严重,且污染源为重金属。
There are lots of pollution indexes with different attributes in water environmental quality assessment.For the purpose of reflecting the attributes in the assessment,the index subsets are constructed in a lower level by classifying attributes,and the matter-element model of every subset is established based on the extension theory,then the comprehensive evaluation results is obtained.The important degree arrangement of various indexes is carried out based on simple dependent function,and the weighting system of indexes is modified with AHP.For the example,the comprehensive evaluation method is used to analyze the groundwater quality in Weihe area.The results show that the water quality is relatively to Class Ⅳ criteria and the water has been polluted seriously by the Heavy metal.
出处
《节水灌溉》
北大核心
2011年第8期25-28,共4页
Water Saving Irrigation
基金
宁夏大学科学研究基金资助项目(ndzr09-42)
关键词
地下水质评价
可拓理论
物元
AHP
groundwater quality assessment
extension theory
matter-element
AHP
