Soil and grassland vegetation are important components for the grassland ecosystem,and they affect each other closely. The effect of grassland vegetation degradation on soil water holding capacity is a key problem for the research on grassland ecology,which is of great theoretical and practical importance to revealing the changes of water conservation function. In this study,the Tanggula Town of Golmud City in the headwaters area of Yangtze River was selected as the study area. The characteristics of soil w...