中文摘要：

[目的]采用不同的评价方法，评价陕西省南部凤凰镇地下水水质，为该古镇水土保持工作的进一步开展提供科学依据。[方法]以凤凰镇2015年10月枯水期水质监测数据为基础，选取总硬度和硫酸盐等11个水质评价指标，分别采用单指标评价法、综合指标评价法、常规及修正内梅罗污染指数法及模糊综合评判法进行地下水水质评价。[结果]对各种评判方法的具体运用过程进行了全面介绍。结果显示，5种方法评价的水质类型有一定的出入，但通过对比分析认为常规、修正内梅罗水污染指数法和糊综合评判法在凤凰镇水质评价中具有较好的适用性。[结论]模糊综合评判法评价结果更加真实可靠，更能准确评价凤凰镇地下水水质。

英文摘要：

[Objective] To select different evaluation methods for evaluating groundwater water quality of Fenghuang Town in Southern Shaanxi Province, and to provide a scientific basis for the further development of soil and water conservation work. [Methods] Based on dry season water quality monitoring data of Fenghuang Town in October 2015, selecting total hardness and sulphate etc. elven water quality evaluation indexes, respectively, using the single index evaluation method, the comprehensive index evaluation method, regular and modified Nemerow pollution index method and fuzzy comprehensive evaluation method were used to evaluate groundwater quality. [Results] This paper comprehensively introduced the application process of each evaluation method. The five kinds of methods used in evaluating the water quality were the similar. But through the analysis of contrast, regular, modified Nemerow index method and fuzzy comprehensive evaluation method water quality evaluation have good applicability about water evaluation in the Fenghuang Town. [Conclusion] Fuzzy comprehensive evaluation results are more reasonable and reliable, which can evaluate groundwater water quality of Fenghuang Town more accurately.