摘要
以阿克苏市16处地下水监测井的水样数据为基础,采用单因子评价法、F值评分法、灰色关联分析法和模糊综合评价法对地下水水质进行综合评价,分析结果显示,单因子评价法与F值评分法的评价结果比较接近,而灰色关联分析法和模糊综合评价法的评价结果比较接近。不同评价方法中,单因子评价法与模糊综合评价法差异最大,是由于在单因子评价法中是以水质最差的单项指标确定水质类别,因而评价出的水质类别偏劣,而模糊综合评价法因为忽略了少数监测指标中超标的污染因子所产生的影响,且在计算过程中充分考虑了不同水质类别分界线的模糊性和评价因子对水质权重的影响,从而得到了较好的水质类别。F值评分法可以反映出水质整体状况,但在评价结果中更加凸显了超标污染指标的级别,且评价结果不连续。灰色关联分析法能更全面有效的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 water sample data of 16 water level monitoring wells in Aksu City, the groundwater quality was comprehensively evaluated by single factor evaluation method, F value evaluation method, grey correlation analysis method and fuzzy comprehensive evaluation method. The results show that the evaluation results of the single factor evaluation method and the F value scoring method are relatively close, while the evaluation results of the gray correlation analysis method and the fuzzy comprehensive evaluation method are relatively close. Among the different evaluation methods, the difference between the single factor evaluation method and the fuzzy comprehensive evaluation method is the biggest because the water quality category is determined by the single index with the worst water quality in the single factor evaluation method, so the water quality category is inferior, while in the fuzzy comprehensive evaluation method, the pollution factors exceeding the standard in a few monitoring indexes are neglected. In the process of calculation, the influence of the fuzziness of the demarcation line of different water quality classes and the influence of the evaluation factors on the water quality weight are fully considered, and the better water quality classes are obtained. The F value scoring method can reflect the overall state of water quality, but it highlights the level of the pollution index exceeding the standard in the evaluation results, and the evaluation results are not continuous.The grey correlation analysis method can make full and effective use of the monitoring data of water samples and make the evaluation results more consistent with the actual water quality.In order to make the evaluation result 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 evaluation purpose.
作者
刘诚
LIU Cheng(Xinjiang Water Conservancy and Hydropower Survey and Design Institute,Urumqi 830049,China)
出处
《节水灌溉》
北大核心
2019年第4期66-71,共6页
Water Saving Irrigation
关键词
地下水
水质
评价方法
groundwater
water quality
evaluation method
