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Groundwater Changes of Selected Groundwater Systems in Northern China in Recent Fifty Years

详细信息   
摘要
Based on the data of groundwater resource investigation in Northern Chinathe present work is to discuss the changes of regional groundwater regimes and its induced mechanism during the past fifty years by selecting the Junggar Basinthe Hexi Corridor Basinthe North China PlainNCPand the Songnen Plain as representatives for different groundwater systems. The results suggested that the responses of groundwater system to the stress were characterized by gradual and sudden change resulting in degeneration of groundwater systemwhich restricted sustainable utilization of groundwater resources. The changes of groundwater rechargeflow pattern and chemical composition showed a slight difference in different basins and plains. Groundwater recharge area changed from the piedmont plain to the agricultural area in the lowland. As a resultthe total rate of recharge for each basin tended to decrease during the past 50 years.

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