关键词: Ⅱ类水体, 悬移质泥沙, 卫星遥感, 反演模型, 内陆山区河流

Abstract: Suspended sediment is one of the important parameters of water environment, and the change of suspended sediment in water has many effects on the basin ecological environment. Traditional research methods can realize accurate analysis of suspended sludge content, but there are still problems such as limited test points distribution and insufficient timeliness. Remote sensing technology can make up for the shortage of traditional research methods and achieve synchronous observation in large water areas. Based on four commonly used models in remote sensing inversion of suspended sediment concentration: physical model, semi-analytical model, empirical model, artificial intelligence algorithm model, the suspended sediment content in case II waters by remote sensing inversion was summarized. And the problems of remote radiance extraction, mixed-pixel decomposition and other issues in remote sensing inversion were discussed. Aiming at the inland mountainous rivers in China, this paper puts forward the key problems in the development of remote sensing inversion of suspended sediments of case II waters in mountainous rivers.

Key words: case II waters, suspended sediment, satellite remote sensing, inversion model, inland mountainous rivers