饮用水源地水质评价的变权欧式距离模型的建立及应用  

Assessment approach to drinking water source quality based on continental distance model with varying weight

作　　者：赵晓亮[1] 宋子岭[1] 杨康[1] 李和万[1] 

机构地区：[1]辽宁工程技术大学资源与环境工程学院,辽宁阜新123000

出　　处：《安全与环境学报》2008年第5期92-94,共3页Journal of Safety and Environment

摘　　要：通过改进加权欧式距离模型,建立变权欧式距离模型,以体现相同水质评价因子在不同饮用水源评价单元中的客观各异性。采用污染贡献率确定评价因子在各评价单元中的权重。结合规范化数据建立符合各评价单元自身特点的评价距离尺度准则,对饮用水源地的水质进行评价。结果表明,与综合指数法比较,变权欧式距离模型的分割灵敏性较高、评价效果良好。本研究提供了一种符合饮用水质特点的科学评价方法。This paper intends to introduce an improved drinking-water quality assessment model with varying weights for determining the pollution degree based on a so-called continental distance one.In hoping to fully represent the specific characteristics of all the constituent factors to be assessed and reform the original continental distance model,we have established the given model to stress its applicability and accuracy.The assessment results of the continental distance model proves much higher than the one of traditional methods,for example,the comprehensive index method,the improved model of ours can more fully reflect the contamination degrees of the various factors to be assessed,it can also show the influence of some factors on the entire environmental quality of a place. Therefore,if the continental distance model with varying weight can work out precise results from the different places that are polluted to the similar degrees,the differences of the similarly polluted places can be expected to be represented in detail by the precisely evaluated data.Thus,the improved model based on the continental distance model,which is put forward in this paper,is expected to be available in the further range quality assessment in order to provide some more useful information for the environmental management and control institutions.

关 键 词：环境科学 饮用水源 污染贡献率 变权欧式距离模型 

分 类 号：X32[环境科学与工程—环境工程]