Influence of South-to-North Water Transfer Project on the changes of terrestrial water storage in North China Plain

doi:10.7523/j.issn.2095-6134.2020.06.008

Abstract

Abstract: The impact of the South-to-North Water Transfer Project on the terrestrial water storage (TWS) depletion in the North China Plain since the formal water supply at the end of 2014 has not been evaluated. Based on the data of GRACE and GRACE Follow-on gravity satellites, this paper calculates the changes of water storage in the North China Plain, and compares it with the water amount (3.08 Gt/a) supplied by the South-to-North Water Transfer Project. It is found that the change rate of TWS in the North China Plain from 2004 to 2015 is (-5.92±0.53) Gt/a, and the change rate in 2015-2019 is (-2.96±2.79) Gt/a. The results show that the change rate of TWS was decreased by 50%, and the trend of long-term depletion was alleviated obviously. At the same time, the trend of TWS in Beijing and Tianjin has also changed significantly. Therefore, the South-to-North Water Transfer Project had significantly improved the situation of TWS in North China, and played an active and effective role.

Key words: North China Plain, South-to-North Water Transfer Project, terrestrial water storage, GRACE

CLC Number:

P343.9

LI Jia, TANG He, RAO Weilong, ZHANG Lan, SUN Wenke. Influence of South-to-North Water Transfer Project on the changes of terrestrial water storage in North China Plain[J]. , 2020, 37(6): 775-783.

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