地下水质量综合评价方法优选与分析——以滹沱河冲洪积扇为例

地下水质量评价方法是决定地下水质量评价工作的关键环节。以滹沱河冲洪积扇为研究区,通过对比内梅罗指数法和模糊数学综合评价法,得出参评指标中痕量指标较多时,内梅罗指数法评价结果受极值影响较大,并且未考虑参评指标权重及评价结果的物理意义难以界定,不适用于综合指标评价;模糊数学综合评价法的相乘相加算子考虑了所有参评指标的权重,并以隶属状况判定评价等级,评价方法较为合理,但是当单项毒理指标超标但浓度较低时评价结果失真,经修正后失真情况得以消除,评价结果也较为客观。

Optimal selection and analysis of groundwater quality evaluation methods: A case study in the Hutuo River alluvial pluvial fan

Taking the Hutuo River alluvial pluvial fan for example,in contrast to the fuzzy mathematics method,the Nemerow method is significantly affected by extreme values while trace indexes are of higher proportion.Since the weights of evaluation indexes are neglected,the physical meaning of evaluation results is hard to define.So we can conclude that the Nemerow method is not suitable for evaluation of multiple indexes.As the weights of the indexes’are considered and membership degree is used to defin...