长沙理工大学学报（自然科学版）2025，Vol.22Issue(3)：153-168,16.DOI:10.19951/j.cnki.1672-9331.20241104001
湘江流域地下水干旱特征研究
Study on groundwater drought characteristics in Xiangjiang River Basin
摘要
Abstract
[Purposes]This study aims to estimate the groundwater storage(GWS)change in the Xiangjiang River Basin by using data from gravity recovery and climate experiment(GRACE)and GRACE follow-on(GFO)satellites,namely GRACE/GFO satellites,and quantitatively characterize the drought characteristics of groundwater to reveal the variation law and the drought mechanism of groundwater in the Xiangjiang River Basin.[Methods]The data of total terrestrial water storage change monitored by GRACE/GFO satellites,combined with the measured and simulated component data of different hydrological models,were utilized.Based on the principle of conservation of mass,the GWS change in the Xiangjiang River Basin from 2002 to 2022 was estimated.[Findings]Good agreement was found between the GWS change in the Xiangjiang River Basin estimated from GRACE/GFO satellites and the one from ground observations.The component contribution rate of GWS changes reached 55%-67%,and it dominated in the Xiangjiang River Basin.From 2002 to 2022,10 moderate to extreme drought events were identified based on the GWS deficit index,with a total duration and total deficit of 88 months and-3 456 mm,respectively.Among the 10 drought events,the drought from July to December 2022 was the most severe,with an average GWS deficit of-84.0 mm per month and a total deficit of-503.7 mm.[Conclusions]GRACE/GFO satellites can better detect GWS changes in the Xiangjiang River Basin than models.Affected by karst hydrogeology conditions,the Xiangjiang River Basin has a relatively strong subsurface drainage capability,leading to larger GWS losses during extreme droughts.关键词
湘江流域/重力卫星/地下水储量变化/地下水干旱/岩溶水文地质/气候变化Key words
Xiangjiang River Basin/GRACE/GFO satellite/groundwater storage change/groundwater drought/karst hydrogeology/climate change分类
建筑与水利引用本文复制引用
黄志勇,蒋培琰,隆院男,庞凯夫,汪雨菡,周吕思..湘江流域地下水干旱特征研究[J].长沙理工大学学报（自然科学版）,2025,22(3):153-168,16.基金项目
国家自然科学基金(42301404) （42301404）
湖南省自然科学基金(2022JJ40480) （2022JJ40480）
长沙理工大学大学生创新创业训练计划项目(2023042) The National Natural Science Foundation of China(42301404) （2023042）
Natural Science Foundation of Hunan Province(2022JJ40480) （2022JJ40480）
Student Innovation Training Project from Changsha University of Science&Technology(2023042) （2023042）
