Acta Geodaetica et Cartographica Sinica ›› 2022, Vol. 51 ›› Issue (4): 622-630.doi: 10.11947/j.AGCS.2022.20220030

• The 90th Anniversary of Tongji University Surveying and Mapping Discipline • Previous Articles    

Analysis of terrestrial water storage change and its driving factors of Hongliu River region

ZHANG Lin, SHEN Yunzhong, CHEN Qiujie, WANG Fengwei   

  1. College of Surveying and Geo-informatics, Tongji University, Shanghai 200092, China
  • Received:2022-01-14 Revised:2022-03-04 Published:2022-04-24
  • Supported by:
    The National Natural Science Foundation of China(Nos. 41974002; 42061134010)

Abstract: The terrestrial water storage change (TWSC) from January 2003 to December 2016 over the Hongliu River region (HLRR) is derived from the CSR-RL06 and Tongji-Grace2018 time-variable gravity field models. In addition, the major influencing factors of the regional TWSC are quantified via the water balance equations using precipitation, evapotranspiration, runoff, and human-induced water consumption. The results show that: ① When the water consumption is considered, the root-mean-square error of the water balance is reduced by 39%. ② The annual positive average contribution rate of meteorological and hydrological factors to the HLRR TWSC is 47.7% except for 2009, 2011 and 2016 with the mean negative contribution rate of -22.5%, while the annual negative average contribution rate of the human-related water consumption is -34.8%. ③ The correlation coefficient between water storage changes in the Longtan Reservoir and the TWSC over the Hongliu River region is 0.66, and there are one-year and two-year main cycle signals.

Key words: terrestrial water storage change, drive factor, water balance equation, GRACE, Hongliu River region

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