水力发电2024，Vol.50Issue(12)：25-32,8.
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
摘要
Abstract
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Key words
multi-source satellite data/groundwater storage variation/accuracy verification/Baiyangdian Watershed分类
天文与地球科学引用本文复制引用
赵玉川,李玉龙,王昕洲,韩金辉,王坤,李昭祥,杨传国..基于多源卫星数据的白洋淀流域地下水储量评估[J].水力发电,2024,50(12):25-32,8.基金项目
河北省地质资源环境监测与保护重点实验室开放课题(JCYKT202209) （JCYKT202209）
国家自然科学基金重点支持项目(U2240217) （U2240217）
