Abstract: Artemisia ordosica is the dominant species or edificator of Ordos Plateau vegetation.Artemisia ordosica community plant diversity has been tending to increase towards its climax.The seasonal dynamics of the plant diversity is closely related to that of climate.Human activities,especially overgrazing,result in deterioration of the community with decline of the plant diversity.Enclosure and breeding can enhance the plant diversity of Artemisia ordosica community which has been degraded.

Key words: Ordos plateau, Artemisia ordosica community, Plant diversity