摘要
河流悬浮泥沙动态监测对河道变迁、水利工程安全运行、生态和环境保护等都具有重要的应用价值,利用遥感技术可对大区域河流水体悬浮泥沙进行实时监测。与海洋和湖泊等大面积水体相比,当前对河流悬浮泥沙遥感关注较少,且已有研究主要关注入海河流河口区域。为充分发挥不同时间、空间和光谱分辨率多源卫星遥感资料优势,实现更广泛区域、不同级别河流的悬浮泥沙输运遥感监测,对国内外已发表的关于河流悬浮泥沙卫星遥感的数据源和模型进行了系统归纳,总结出河流悬浮泥沙卫星遥感研究中面临河流遥感反射率高精度提取、悬浮泥沙浓度高精度遥感和基于二维表层悬浮泥沙浓度遥感的三维通量遥感等挑战和难点;在此基础上,从去除邻近效应大气校正、考虑悬浮泥沙粒径分布的浓度遥感和悬浮泥沙输运通量三维遥感3个方面对河流悬浮泥沙遥感监测的未来发展进行了展望。
Dynamic monitoring of suspended sediment in rivers has important application values for channel changes,safe operation of water conservancy projects,ecology,and environmental protection.Real-time remote sensing technology can monitor suspended sediment in sizeable regional river water bodies.Compared to large bodies of water such as oceans and lakes,remote sensing of suspended sediment in rivers has received less attention.Existing research has primarily focused on estuarine areas where rivers enter the sea.This study systematically summarizes published data sources and models of satellite remote sensing of suspended sediment in rivers worldwide to fully utilize the advantages of multi-source satellite remote sensing data with different temporal,spatial,and spectral resolutions and to realize remote sensing monitoring of suspended sediment transport in a broader area and at different river levels.The difficulties and challenges of satellite remote sensing of suspended sediments in rivers are discussed.On this basis,the future development of remote sensing monitoring of suspended sediment in rivers has been viewed from three perspectives:removing atmospheric correction of the proximity effect,concentration on remote sensing considering suspended sediment particle size distribution,and three-dimensional remote sensing of suspended sediment transport flux.
作者
段梦伟
李如仁
刘东
蒋昕桐
仇志强
李柯妤
DUAN Mengwei;LI Ruren;LIU Dong;JIANG Xintong;QIU Zhiqiang;LI Keyu(School of Transportation and Geomatics Engineering,Shenyang Jianzhu University,Shenyang 110168,China;Key Laboratory of Watershed Geographic Sciences,Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China;School of City and Environment,Northwest University,Xi’an 710127,China)
出处
《地球科学进展》
CAS
CSCD
北大核心
2023年第7期675-687,共13页
Advances in Earth Science
基金
国家自然科学基金面上项目“露天矿雷达形变监测环境影响机理及低相干环境形变反演方法研究”(编号:51774204)资助.
关键词
河流
悬浮泥沙
卫星遥感
邻近像元效应
粒径
River
Suspended sediment
Satellite remote sensing
Adjacent pixel effect
Particle size
