Abstract：We present a case from Liangshui River catchment to investigate and quantify the reasons for these changes. Results indicate that the groundwater with poor quality are limited at depths less than 100m. Shallow groundwater and river samples plot on the same meteoric water line, which indicates river seepage is one of the important controlling factors for groundwater quality. Meanwhile, the hydrogeologic structure of the study area indicates the groundwater is primarily recharged from river seepage in upper alluvial-proluvial plain, which should be considered an important protected region. Antropogenic contamination added about 435mg/L both in the river and shallow groundwater. Although groundwater pollution is observed at shallow depths, the trend is likely in stable state indicated by the steady TDS values over the most recent seven years. In order to mitigate groundwater pollution, limits on pumping phreatic aquifer water and channel anti-seepage treatment measures are put forward for consideration.
李捷, 姜颖, 刘玉莲, 姜亚, 滕彦国. 凉水河流域地下水水化学特征和时空变化规律[J]. 中国环境科学, 2022, 42(4): 1847-1853.
LI Jie, JIANG Ying, LIU Yu-lian, JIANG Ya, TENG Yan-guo. Hydrolochemical characteristics and spatial-temporal variations of groundwater in the Liangshui River basin, Beijing. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(4): 1847-1853.
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