This article contrasted the enclosed and unenclosed grasslands for soil water,soil nutrients,water stable aggregates,and community structure.Results showed that in grasslands,soil water active layer was 0—20 cm,and meanwhile,compensatory depths were 140 cm and 20 cm in enclosed and unenclosed grasslands,respectively.Below the depths,soil water content kept the level of 9.5% and 8.5% in enclosed and unenclosed grasslands,respectively.With soil depth increased,soil water stable aggregate content(1 and 0.25 mm) was reduced gradually and in enclosed grassland,it was greater than that in unenclosed grassland.Except the available P,the contents of soil organic matter,total N,available K,available N,NO3-—N and NH+4—N in enclosed grassland were much greater than those in unenclosed grassland.The number of species,Simpson index,Shannon—Wiener index,and Pielou index in the two grasslands were similar.The average plant height and coverage in unenclosed grassland were less than those in enclosed grassland and the differences were significant.