测绘学报 ›› 2026, Vol. 55 ›› Issue (3): 439-450.doi: 10.11947/j.AGCS.2026.20250466

• 大地测量学与导航 • 上一篇    下一篇

基于GNSS和GRACE/GRACE-FO的陕甘宁地区水资源与水文干旱特征时空变化评价

吴汤婷1(), 罗馨语1, 卢立果1(), 刘站科2, 超能芳3   

  1. 1.东华理工大学测绘与空间信息工程学院,江西 南昌 330013
    2.自然资源部第一大地测量队,陕西 西安 710054
    3.中国地质大学(武汉)海洋学院,湖北 武汉 430074
  • 收稿日期:2025-10-28 修回日期:2026-03-20 出版日期:2026-04-16 发布日期:2026-04-16
  • 通讯作者: 卢立果 E-mail:ttwu@ecut.edu.cn;lglu66@163.com
  • 作者简介:吴汤婷(1990—),女,博士,讲师,研究方向为卫星重力学。E-mail:ttwu@ecut.edu.cn
  • 基金资助:
    国家自然科学基金(42264003; 42274115; 42574004);赣鄱俊才支持计划-主要学科学术和技术带头人培养项目(20232BCJ23018);江西省自然科学基金(20224BAB213048);陕西测绘地理信息局科技创新项目(SCK2025-01)

Assessment of water resource changes and drought characteristics in the Shaanxi, Gansu and Ningxia region based on GNSS and GRACE/GRACE-FO

Tangting WU1(), Xinyu LUO1, Liguo LU1(), Zhanke LIU2, Nengfang CHAO3   

  1. 1.School of Surveying and Geoinformation Engineering, East China University of Technology, Nanchang 330013, China
    2.First Geodetic Surveying Brigade, Ministry of Natural Resources, Xi'an 710054, China
    3.College of Marine Science and Technology, China University of Geosciences, Wuhan 430074, China
  • Received:2025-10-28 Revised:2026-03-20 Online:2026-04-16 Published:2026-04-16
  • Contact: Liguo LU E-mail:ttwu@ecut.edu.cn;lglu66@163.com
  • About author:WU Tangting (1990—), female, PhD, lecturer, majors in satellite gravimetry. E-mail: ttwu@ecut.edu.cn
  • Supported by:
    National Natural Science Foundation of China(42264003; 42274115; 42574004);Ganpo Juncai Support Program for Academic and Technical Leaders of Major Disciplines Training Project(20232BCJ23018);Jiangxi Province Natural Science Foundation(20224BAB213048);Science and Technology Innovation Project of Shaanxi Bureau of Surveying, Mapping and Geographic Information(SCK2025-01)

摘要:

陕甘宁地区地形复杂、地势崎岖,给区域水资源监测和干旱评估带来了显著挑战。本文基于大地测量数据,重点分析了该区域陆地水储量(TWS)和地下水储量(GWS)变化的时空特征以及水文干旱带来的影响。结果表明,在TWS变化方面,GNSS反演的结果与全球陆地数据同化系统(GLDAS)的相关性(0.67)略高于与GRACE及其后续卫星(GRACE-FO)的相关性(0.66)。GNSS、GRACE/GRACE-FO和GLDAS所得TWS年振幅分别为(45.99±6.87)、(27.35±1.56)和(9.49±1.20)mm。空间分布上,各结果均显示TWS振幅由西北向东南逐渐增强,其中最大振幅出现在陕甘宁东南部,最小振幅位于陕西北部。2011—2024年期间,GWS呈持续下降趋势。GRACE/GRACE-FO反演结果显示,2011—2017年期间GWS的年下降速率为(-4.38±0.59)mm/a,2018—2024年期间下降速率为(-3.91±0.48)mm/a,表明该区域地下水仍在持续消耗。陕甘宁地区的水文干旱特征表现为频率较高但整体强度较低,其中降水是陕甘宁地区发生水文干旱的主要驱动因子。研究表明,GNSS与GRACE/GRACE-FO均能有效监测区域尺度TWS和GWS的变化过程,提供高时空分辨率的数据支持水资源管理。此外,其在识别水文干旱事件方面的能力也凸显了其在极端气候影响评估中的应用潜力。

关键词: GNSS垂直位移, GRACE/GRACE-FO, 陆地水储量变化, 地下水储量变化, 水文干旱

Abstract:

The complex topography and rugged terrain of the Shaanxi, Gansu and Ningxia region pose significant challenges to water resources monitoring and drought assessment. This study aims to analyze the spatiotemporal variations of terrestrial water storage (TWS) and groundwater storage (GWS) and their hydrological drought impacts in the region based on geodetic data. The results indicate that the correlation of TWS changes derived from the global navigation satellite system (GNSS) with the global land data assimilation system (GLDAS) data (0.67) is slightly higher than the correlation with the gravity recovery and climate experiment and its successor satellites (GRACE/GRACE-FO) data (0.66). The annual amplitudes of TWS obtained from GNSS, GRACE/GRACE-FO, and GLDAS were (45.99±6.87), (27.35±1.56), and (9.49±1.20) mm, respectively. Regarding spatial distribution, all datasets show a gradual enhancement of TWS amplitude from northwest to southeast, with a maximum amplitude occurring in the southeastern Shaanxi-Gansu-Ningxia region and a minimum amplitude in northern Shaanxi. GWS exhibited a continuous downward trend from 2011 to 2024. GRACE/GRACE-FO inversion results show an annual GWS decline rate of (-4.38±0.59) mm/a for the period 2011—2017 and (-3.91±0.48) mm/a for 2018—2024, indicating that groundwater depletion in this region is still ongoing. The hydrological drought characteristics in the Shaanxi-Gansu-Ningxia region are marked by high frequency but relatively low overall intensity. Among the various factors, precipitation is crucial in triggering hydrological droughts in the Shaanxi-Gansu-Ningxia region. The study indicates that GNSS and GRACE can effectively monitor the TWS and GWS changes on a regional scale, providing high spatiotemporal resolution information to support water resource management. Furthermore, its ability to identify hydrological drought events also highlights its application potential in the assessment of extreme climate impacts.

Key words: GNSS vertical displacement, GRACE/GRACE-FO, terrestrial water storage, groundwater storage, hydrological drought

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