Human Intervention Will Stabilize Groundwater Storage Across the North China Plain

环境科学 地下水 水资源管理 用水 过度开采 节约用水 蓄水 水资源 地表水 水平衡 农场用水 水文学(农业) 环境工程 地质学 地貌学 入口 岩土工程 生物 生态学
作者
Wenting Yang,Di Long,Bridget R. Scanlon,Peter Burek,Caijin Zhang,Zhongying Han,James J. Butler,Yun Pan,Xiaohui Lei,Yoshihide Wada
出处
期刊:Water Resources Research [Wiley]
卷期号:58 (2) 被引量:50
标识
DOI:10.1029/2021wr030884
摘要

Abstract The North China Plain (NCP) has been subjected to groundwater overexploitation over the past decades as a result of rapid socioeconomic development and irrigation water demand with relatively limited renewable water resources. Operation of the middle route of the South‐to‐North Water Diversion Project (SNWD‐M) since December 2014 has provided an opportunity for groundwater sustainability in the NCP by increasing water supply and reducing groundwater abstraction. Water use changes have largely been driven by socioeconomic changes. However, impacts of water diversion, water use change, as well as climate variability in the future on groundwater storage (GWS) in the NCP have not been investigated. This study aims to simulate and project GWS in the NCP during 2005–2050 by incorporating effects of water diversion, water use, and climate variability. The high‐resolution Community Water Model with 30 arcsec spatial resolution was set up to assess interactions between water demand and availability by simulating surface water and groundwater abstraction dynamically. Results show that water diversion and reductions in water use may increase GWS over the NCP in 2050 by 144 mm (19 km 3 ) and 573 mm (75 km 3 ), respectively. Evaluation of GWS among different scenarios shows that combinations of factors, including water use reductions, water diversion, and precipitation variability can contribute up to 73%, 37%, and 32% to GWS stability, respectively. This study highlights the contributions of different management strategies toward sustainable GWS and the importance of water conservation along with diversions.
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