Abstract:The study area is located in the central part of Naiman Banner,Korqin Sandy Land, a stretch of dunefield where there is a very favorable temperate climate, with the mean annual precipitation of 362 3 mm , for fixing aeolian sand dunes Nevertheless, the fixing extent greatly varies with different sites due to wide and intensive human activities (i e overgrazing, irrational cultivation, cutting woods for fuel, fencing dunes, afforestation, etc ) Therefore, this is an optimal area for studying quant...