Abstract Using GRACE satellite data, we inverse the changes of groundwater storage in North China plain from 2003 to 2015. The effectiveness of this method is verified by the groundwater level data of monitoring wells. The changes of GRACE interannual groundwater storage is decomposed based on EOF method, and we analyze the factors affecting the interannual changes of groundwater storage in North China plain combined with the annual average WFblue of winter wheat and TRMM precipitation data. The results show that the variance contribution of the first two eigenvectors is 93.09%. The contribution rate of the first mode variance is 80.04%, and the correlation coefficient between the first mode variance and the annual average WFblue spatial change of winter wheat in North China plain from 2003 to 2009 is -0.69, with consistent spatial distribution; the contribution rate of the second mode variance is 13.05%, and the correlation coefficient with the spatial distribution of precipitation data in the same period is 0.93. This research shows that the agricultural irrigation, especially for winter wheat, plays a vital role in the depletion of groundwater in the North China plain.
ZHANG Minggang,WEI Changshou. Analysis of Temporal and Spatial Changes of Groundwater Storage in North China Plain Based on Multi-Source Data[J]. jgg, 2022, 42(5): 505-509.
ZHANG Minggang,WEI Changshou. Analysis of Temporal and Spatial Changes of Groundwater Storage in North China Plain Based on Multi-Source Data[J]. jgg, 2022, 42(5): 505-509.