吉林省西部平原区降水对潜水水质的影响

Impact of Precipitation on Groundwater Quality in Western Plain Region of Jilin Province

为研究大流域较高分辨率下的潜水水质分布对气候变化的响应关系,以典型半干旱区吉林省西部平原区地下水为例,基于1980～2013年共计34年的降水和潜水水质监测数据,运用单因子和综合水质评价法对研究区潜水进行水质等级评价,并与年降水量做相关性分析,以分析潜水水质与年降水量之间的变化规律。结果表明,潜水水质与年降水量之间存在明显正相关,总体而言,降水量多的年份,潜水水质较好。该响应规律是制定地下水资源可持续利用和保护措施方案的关键,可预测极端气候场景下地下水水质的变化规律。

In order to research the high-precision relationship with unconfined water quality distribution response to climate change in large basin,this paper took the typical phreatic water in semiarid region in the western plain region of Jilin Province for an example.Based on the precipitation and phreatic water quality monitoring data from 1980 to 2013,single factor and integrated water quality evaluation method were used to evaluate water quality grade of phreatic water in study area.And we analyzed the transformation law between water quality and annual precipitation by using correlation analysis.The results indicate that there are significant positive correlation between water quality and annual precipitation.In general,the more precipitation in any year,the unconfined water quality is better.The response pattern is a key to establish sustainable utilization for groundwater resources and protection scheme.Moreover,it can help predict groundwater quality changes in the extreme climate scenarios.