Influence of Soil Water Content on the Vegetation Species Richness in Qinghai Lake Inland Alpine Wetland

This paper studies the correlation between species richness and productivity under different scales using soil water content in Qinghai Lake region, and the research results show that soil water content has negative correlation with species richness under community scales and positive one with productivity; while in different types of vegetations, soil water content has obvious negative correlation with species richness and positive one with productivity.