Water scarcity in Beijing and countermeasures to solve the problem at river basins scale

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Wang, Lixia^1 ; Gao, Jixi^1 ; Zou, Changxin^1 ; Wang, Yan^1 ; Lin, Naifeng^1

Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing

210042, China^1

关键词: Overexploitation;    River basins;    South to North Water Transfer Project;    Water availability;    Water deficits;    Water saving measures;    Water scarcity;    Water transfer projects;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012132/pdf
DOI  :  10.1088/1755-1315/94/1/012132

来源: IOP

【 摘 要 】

Beijing has been subject to water scarcity in recent decades. Over-exploitation of water resources reduced water availability, and water-saving measures were not enough to mitigate the water scarcity. To address this problem, water transfer projects across river basins are being built. This paper assessed water scarcity in Beijing and the feasibility of solving the problem at river basins scale. The results indicate that there was an average annual water deficit of 13×108m3y-1in Beijing, which totaled 208.9 ×108m3for 1998-2014, despite the adoption of various measures to alleviate water scarcity. Three of the adjacent four sub-river basins suffered a serious water deficit from 1998-2014. It was therefore impossible to transfer enough water from the adjacent river basins to mitigate the water scarcity in Beijing. However, the annual water deficit will be eliminated after the comprehensive operation of the world's largest water transfer project (the South-to-North Water Transfer Project, SNWTP) in 2020, but it will take approximately 200 years before Beijing's water resources are restored to the 1998 levels.