四平市城区地下水水质评价

The Groundwater Quality Evaluation for Siping Urban Area in China

在四平市2012年城区地下水水质监测数据的基础上,利用改进的内梅罗指数法模糊综合评判法对研究区的地下水进行了水质现状评价。评价结果显示,改进的内梅罗指数法削弱了最大值评价指标在最终评价等级中的贡献,使得评价等级"居中"(占90%);而模糊综合评判法由于"相乘取大"的运算法则使得权重矩阵A和隶属度矩阵R都与指标的质量浓度相关,夸大了超标指标在最终水质评价等级中的贡献,导致评价等级多为Ⅰ类和Ⅴ类水(占60%)。结合地下水水质监测数据,认为改进的内梅罗指数法更贴近真实地下水水质情况,也说明了任何的水质评价都不能脱离监测数据而只依赖数学的计算方法进行。

Based on the monitor data of groundwater quality in Siping China,this paper evaluates the groundwater quality by the improved Nemerow index method and the puzzle comprehensive evaluation.The evaluation result shows that the improved Nemerow index method decreases the contribution of the max evaluation index in the final groundwater quality level,which leads the quality to the'middle'level(90%),while the puzzle comprehensive evaluation builds up the contribution of over index in final groundwater quality evaluation for the 'multiplication take the big'the algorithm which correlates the concentration with both the weight matrix Aand the membership matrix R,with the result in the quality ofⅠ and Ⅴlevel(60%).Combining with the monitor data of groundwater quality,the paper concludes that the evaluation by the improved Nemerow index method is more real to the real groundwater quality,and any water quality evaluation cant be evaluated only by mathematics calculation without the monitor data.