利用COST-G GRACE时变模型反演黄土高原陆地水储量变化

综合利用COST-G GRACE时变重力场模型、降水、气温、GLDAS模型中地表水、实测浅层地下水和NDVI等多源数据，分析2002-04~2016-12黄土高原陆地水储量的时空变化特征，并利用偏最小二乘回归方法定性分析黄土高原陆地水储量变化的驱动因素。结果表明：1)研究时段内黄土高原陆地水储量具有上升-下降-平缓下降的变化特征，山西省陆地水储量亏损趋势明显；2) 2004~2009年采煤用水、人类生活用水和植被作用是黄土高原陆地水储量下降的重要因素，2010~2016年工业用水、人类生活用水和气温上升是黄土高原陆地水储量下降的重要因素。

Terrestrial Water Storage Changes in the Loess Plateau Based on COST-G GRACE Temporal Model

We analyze the temporal and spatial terrestrial water storage(TWS) changes in the Loess plateau from April 2002 to December 2016 using the COST-G GRACE temporal gravity field model, and data including precipitation, temperature, surface water(SW) of the GLDAS model, measured shallow groundwater(GW), NDVI. Then, we use the partial least squares regression method to qualitatively analyze the driving factors of TWS changes in the Loess plateau. The results show that: 1) During the study period, the TWS changes of the Loess plateau have the characteristics of rising-declining-declining gently, and the loss of TWS in Shanxi province is obvious. 2) From 2004 to 2009, the coal mining water, human domestic water, and vegetation effect are important factors for the loss of TWS in the Loess plateau. Industrial water, human domestic water and temperature rise are important factors for the decline of TWS in the Loess plateau from 2010 to 2016.