河海大学学报（自然科学版）2025，Vol.53Issue(6)：21-32,12.DOI:10.3876/j.issn.1000-1980.2025.06.003
基于GRACE降尺度分析的江西省山丘区地下水储存量变化时空演变规律
Spatiotemporal evolution patterns of groundwater storage variations in hilly area of Jiangxi Province based on downscaling analysis of GRACE data
摘要
Abstract
To study the spatiotemporal characteristics of groundwater storage changes in the hilly areas of Jiangxi Province,based on the gravity recovery and climate experiment(GRACE)/GRACE-FO satellite inversion data from 2003 to 2023,a spatiotemporal evolution analysis framework of groundwater integrating downscaling reconstruction and trend identification was constructed,revealing the pattern of changes in groundwater storage anomalies(GWSA).The high-resolution reconstruction of GWSA was carried out through a deep learning model.The long-term trend component was extracted using seasonal-trend decomposition using LOESS(STL).The groundwater change trend and its significance were identified by combining the Mann-Kendall test and the Theil-Sen slope estimation method.The results show that the reconstructed high-resolution GWSA data clearly reveal the spatiotemporal evolution characteristics of groundwater storage in the hilly areas of Jiangxi Province;after STL,the sequence shows a significant long-term trend and stable seasonal fluctuations.From 2003 to 2023,the groundwater level in the entire province has risen slowly,and the overall long-term trend shows an evolution pattern of"recovery in northeastern and central regions but continuous depletion in southern regions".Notably,Ganzhou City in southern Jiangxi exhibits a significant decline in groundwater storage,making it a representative groundwater-deficit zone.Groundwater variations exhibit compound characteristics,including regional disparities,phased evolution,and intensified high-frequency anomalies,indicating that the system remains unstable and is in a critical state vulnerable to further depletion.关键词
GRACE卫星/地下水储存量/STL分解/趋势分析/江西省山丘区Key words
GRACE satellite/groundwater storage/STL/trend analysis/hilly area of Jiangxi Province分类
天文与地球科学引用本文复制引用
何景媛,肖墁华,游建飞,陈立月,朱健,鲁程鹏..基于GRACE降尺度分析的江西省山丘区地下水储存量变化时空演变规律[J].河海大学学报（自然科学版）,2025,53(6):21-32,12.基金项目
江西省水资源基础调查项目(赣自然资办函[2024]362号) （赣自然资办函[2024]362号）
江西省技术创新引导类计划"科技+地质"联合计划项目(2023KDG01008,2023KDG01009) （2023KDG01008,2023KDG01009）
国家自然科学基金面上项目(524032711) （524032711）
