Abstract Based on the spherical harmonic coefficient products of the GRACE gravity satellite by CSR, we retrieve the changes of terrestrial water storage in China's seven major river basins from 2002 to 2018. Terrestrial water storage changes are obviously dependent on geographical distributions. The water storage of the Liaohe, Haihe, Huanghe and Huaihe river basins generally show decreasing trends, with average annual rates of -0.54±0.9 mm/a, -5.96±0.6 mm/a, -2.65±0.8 mm/a, -1.94±1.2 mm/a, respectively. The most significant decrease in water storage occurred in Haihe river basin, resulting plausibly from the overexploitation of groundwater for industrial and agricultural activities. In the Songhua river, Yangtze river, and Pearl river basins, the water storages show significant positive trends, with average annual rates of 4.52±1.1 mm/a, 3.84±0.7 mm/a, and 4.87±1.1 mm/a, respectively. The time of water storage peak of the basin generally lags behind that of the peak monthly precipitation, because it takes some time to convert rainfall into land water storage.
ZHAO Yingli,SHEN Qiang,FENG Wei et al. Changes and Spatio-Temporal Characteristics of Terrestrial Water Storage Variation in China’s Seven Main River Basins During 2002-2018[J]. jgg, 2022, 42(8): 796-801.
ZHAO Yingli,SHEN Qiang,FENG Wei et al. Changes and Spatio-Temporal Characteristics of Terrestrial Water Storage Variation in China’s Seven Main River Basins During 2002-2018[J]. jgg, 2022, 42(8): 796-801.
