基于层次分析法的地下水水质评价——以阿克苏市为例

Evaluation of Groundwater Quality Based on Analytic Hierarchy Process——A Case Study of Akesu

基于层次分析法(AHP)建立了阿克苏市地下水环境质量评价模型,以阿克苏市16个水位监测井的水样数据为基础,对地下水环境质量的评价结果表明,水样中达Ⅲ类水质标准的占81.25%,其中优良和良好的水质占43.75%,而极差和较差的水质有18.75%。通过与F值评分法结果对比发现,层次分析法由于采用了变化的权重对评价因子进行处理,同时综合考虑了全部评价因子对水质的贡献与因子间的相互联系,因而能更全面有效地利用水样的监测数据,使评价结果比较符合实际的水质状况,为使评价结果更科学客观地反映出水体的实际情况,应根据实际的监测数据与评价目的合理地选择评价方法。

Based on the analytic hierarchy process (AHP),the groundwater environmental quality evaluation model of Aksu City was established.Based on the data of16 water level monitoring wells in Aksu City,the groundwater environmental quality evaluation resultsshowed that 81.25% of the groundwater samples reached Class III water quality standard,among which 43.75% were good.And poor water quality was18.75%. By comparing with the resultsof F - value scoring method,it was found that the AHP can make more comprehensive and effective use of the monitoring data of water samples and make the evaluation resultsmore realistic because it adopted variable weightsto deal with the evaluation factors and took into account the contribution of all the evaluation factors to water quality and the relationship between the factors.In order to reflect the actual situation of water body more scientifically and objectively,the evaluation method should be selected reasonably according to the actual monitoring data and the purpose of evaluation.