基于多源卫星数据的白洋淀流域地下水储量评估  

Assessment of Groundwater Storage in Baiyangdian Watershed Based on Multi-source Satellite Data

作　　者：赵玉川 李玉龙 王昕洲 韩金辉 王坤 李昭祥 杨传国[2] ZHAO Yuchuan;LI Yulong;WANG Xinzhou;HAN Jinhui;WANG Kun;LI Zhaoxiang;YANG Chuanguo(Hebei Key Laboratory of Geological Resources and Environment Monitoring and Protection,Shijiazhuang 050021,Hebei,China;College of Hydrology and Water Resources,Hohai University,Nanjing 210024,Jiangsu,China;Nanjing Branch of Jiangsu Province Hydrology and Water Resources Investigation Bureau,Nanjing 210008,Jiangsu,China;The Fourth Geological Brigade of Hebei Bureau of Geology and Mineral Exploration and Development,Chengde 067000,Hebei,China)

机构地区：[1]河北省地质资源环境监测与保护重点实验室,河北石家庄050021 [2]河海大学水文水资源学院,江苏南京210024 [3]江苏省水文水资源勘测局南京分局,江苏南京210008 [4]河北省地质矿产勘查开发局第四地质大队,河北承德067000

出　　处：《水力发电》2024年第12期25-32,共8页Water Power

基　　金：河北省地质资源环境监测与保护重点实验室开放课题(JCYKT202209);国家自然科学基金重点支持项目(U2240217)。

摘　　要：准确监测地下水储量变化,是合理利用和管理地下水资源的重要前提。基于多源卫星数据计算白洋淀流域地下水储量变化,利用高分辨率数据构建地理加权回归模型进行降尺度处理,与地下水实测数据对比验证,并分析流域地下水储量的时空变化特征。结果表明:此方法在白洋淀流域具有较高精度,与59个地下水站点实测数据相比,相关系数平均值为0.62。研究区地下水储量在2002年~2023年平均变化速率为-1.44 cm/a,2011年~2020年期间下降速率最快,2020年之后呈现显著上升趋势;空间上地下水储量由东北向西南方向亏损程度增大。Accurately monitoring on the variation of groundwater storage is an important prerequisite for the rational utilization and management of groundwater resources.Based on multi-source satellite data,the groundwater storage changes in Baiyangdian Watershed is assessed,in which,the high-resolution data is used to construct a geographically weighted regression model for downscaling.The assessment is validated with actual groundwater measurements,and the spatiotemporal variations in groundwater storage within the watershed are analyzed.The results indicate that the method of calculating groundwater storage changes based on downscaling using multi-source satellite data shows high precision in Baiyangdian Watershed,with an average correlation coefficient of 0.62 compared to measurements from 59 groundwater monitoring stations.The average rate of change in groundwater storage in the study area from 2002 to 2023 is-1.44 cm/year,with the fastest decline observed between 2011 and 2020,followed by a significant increase after 2020.Spatially,the groundwater storage depletion increases from northeast to southwest.

关 键 词：多源卫星数据 地下水储量变化 精度验证 白洋淀流域 

分 类 号：P641.8[天文地球—地质矿产勘探]