我国水能资源十分丰富,但目前仅开发了可供开发利用的5％左右。在发展水电时,淹没损失的估算是一个很重要的问题。而采用常规的野外作业方式进行淹没损失的调查,不仅野外工作量大,要花很大的人力物力,而且周期长,已不能满足水电发展的需要。为此,在二滩电站的淹没损失估算中,中国科学院遥感应用研究所曾采用过遥感分析的方 China is rich in hydropower resources, but only about 5% is currently being developed for development and utilization. The estimation of submergence loss is a very important issue when developing hydropower. The investigation of submergence loss using conventional field operation methods not only requires a lot of work in the field but also takes a great deal of manpower and resources, and the long period can no longer meet the needs of hydropower development. To this end, Ertan Hydropower Station inundation loss estimates, Institute of Remote Sensing Applications Chinese Academy of Sciences have used remote sensing analysis of the side