Abstract The Loess Plateau (LP) is a typical water-limited area. Since the revegetation plan started in 1999, the rapid growth of vegetation has not only significantly changed the local water cycle, but also probably affected regional groundwater drought. However, the effect of revegetation on groundwater drought remains largely unexplored. To this end, we isolated the groundwater anomalies from terrestrial water storage of the Gravity Recovery and Climate Experiment satellites and soil moisture of the Global Land Data Assimilation System, and further used the drought severity index to characterize groundwater drought. The evolution characteristics of groundwater drought in the LP were analyzed, and the effect of revegetation plan on groundwater drought were explored. Results indicated that: (1) Normalized Difference Vegetation Index (NDVI) during 2003 ~ 2015 in the LP was growing rapidly, meanwhile, groundwater storage significantly decreased (p

中文翻译：

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黄土高原植被恢复对地下水干旱的影响

摘要 黄土高原（LP）是典型的限水区。自 1999 年重新植被计划启动以来，植被的快速生长不仅显着改变了当地的水循环，而且可能影响了区域地下水干旱。然而，重新植被对地下水干旱的影响在很大程度上仍未得到探索。为此，我们从重力恢复和气候实验卫星的陆地储水量和全球土地数据同化系统的土壤水分中分离出地下水异常，并进一步利用干旱严重程度指数来表征地下水干旱。分析了LP地下水干旱的演变特征，探讨了植被恢复计划对地下水干旱的影响。结果表明：