Abstract: Studies on the effect of different grazing intensities on A.chinense grasslands show that in comparing with light grazing, above-and underground biomass of the community is decreased respectively by 67.96 and 75.00%, and tillers number of root stocks and seed production of A.chinease are decreased by 1.0 and 33X, under overgrazing condition.Under extreme grazing condition, soil organic matter and water content are decreased by 21.1 and 66.5%, and the alkalinity and total salt are increased by one and eight times,respectively.

Key words: Grazing succession, Aneurolepidium chinense grassland, Songnen grassland