The Heihe River Basin (HRB) belongs to the arid inland basin, and contains many natural landscapes, such as glacier, the Gobi, desert and the oasis and so on.In HRB, water vapor sources for precipitation are complex and the spatial and temporal distribution varies greatly. Precipitation has an important impact on the ecological environment, and studying on atmospheric precipitation characteristics of HRB and water vapor sources has an important significance on a whole-depth study of water cycle char...