城市化进程中地下水水质年内变化特征研究--以北京市为例

摘要

In this paper, three indicators such as hardness, TDS (total dissolved solids) and Cl-were used to analyze the variations of groundwater quality of shallow aquifer and mid-aquifer in the early and mid-urbanization respectively by single factor evaluation and statistical analysis. The comparison results showed that the assessment of groundwater quality of Beijing plain in rainy season is worse than that in dry season. Also the evaluation result of TDS by data in 2012 show that the area in which concentration of TDS increasing mainly located in the southern parts of Daxing and Tongzhou. The total area with the increasing concentration is greater than that of the decreasing concentration.%采用单因子评价法、统计分析法，以主要超标指标总硬度、溶解性总固体和稳定指标氯化物为特征指标，对北京平原区城市化进程初期、中期浅层和中层的地下水年内变化特征进行了分析和研究。对比结果表明，丰水期的水质劣于枯水期。选取2012年水质数据，分析溶解性总固体的变化分布特征，分析结果表明：上升区范围主要分布在大兴和通州的南部地区，平原区浓度上升区面积大于浓度下降区。