Changes of Groundwater Recharge and Discharge in Watershed of the Loess Plateau

• 责任者：Zhu Ruirui (Key Laboratory of Water Cycle and Related Land Surface Processes ; Institute of Geographic Sciences and Natural Resources Research ; Chinese Academy of Sciences ; Beijing 100101 ; China) ; Zheng Hongxing
• 刊名：Scientia Geographica Sinica
• 出版年：2010
• 卷期：30(1)
• 关键词：地下水补给 ; groundwater recharge ; 地下水排泄 ; groundwater discharge
• 页码：p.108-112
• 图表：2 illus., 2 tables, 7 refs.
• 分类号：1701
• issnNo：ISSN1000-0690
• isbnNo：CN22-1124/P

In this paper, recharge-discharge relationship in the basin has been investigated using the daily streamflow records since the 1950s. It was estimated that the annual recharge of the basin varied from 11.38 mm to 15.69 mm. For different sub-catchments the ratio between recharge and precipitation ranged in 2.9%～4.7%, while the ratio between recharge and baseflow was 73.5%～86.8%. Baseflow is highly correlated with recharge. Temporally, groundwater recharge has decreased significantly, which consequently resulted at the significant reduction of baseflow. However, the decrease rate of baseflow is larger than recharge indicating the impacts of human activities like groundwater withdrawing.