改进综合标识指数法在地下水方面的应用——以赵川盆地为例

Application of Improved Comprehensive Water Quality Identification Index Method to Evaluation of Groundwater Quality——A Case Study of Zhaochuan Basin

传统的综合标识指数法主要用于地表水体的研究且权重计算中采用的是等权重法。为了完善其方法的缺点及使用的局限性,采用AHP-因子分析法的综合标识指数法,对赵川盆地的地下水水质情况进行评价和分析。并采用传统的水质评价方法、内梅罗指数法和灰色聚类法对改进的综合标识指数法的适用性进行对比分析。结果表明,研究区地下水质量主要以Ⅱ类和Ⅲ类水为主,主要污染指标为F-、NO-3、TH(总硬度)、Fe和SO2-4,主要是由于自然因素和人为因素共同作用的结果;综合标识指数法的评价结果与实际情况相符,且在地下水质量评价方面的有很大的适用性。

The traditional comprehensive water quality identification index method is mainly used in the study of surface water and the weight calculation is often through the equal weight method. In this study,aiming to improve the shortcomings of the method and the limitations of its use,the AHP-Factor Analysis Method of comprehensive identification index was used to evaluate and analyze the groundwater quality in the Zhaochuan Basin. And the traditional water quality assessment method,the Nemero index method and the gray clustering method were used to compare the applicability of the improved comprehensive water quality identification index method. The results how that the quality of groundwater in the study area is mainly Ⅱ and Ⅲ type,and the main pollution indicators are F-,NO-3,TH,Fe and SO2-4,which are mainly caused by the combined effects of natural factors and human factors; The evaluation result of comprehensive water quality identification index method is consistent with the actual situation and has great applicability in the evaluation of groundwater quality.