Main Vegetation Types in Yading Nature Reserve,Daocheng County, Sichuan Province

Yading Nature Reserve is located in the southeastern margin of the Qinghai-Tibet Plateau and the east of Hengduan Mountains with complicated topography and climates,which is a special eco-geographical region having abundant plant resources to constitute complex and varied vegetation types. Based on the classification,principle and system of natural vegetation in Sichuan,and the species composition, community structure, community appearance, dynamic and ecological geographic distribution of plant communities,discussion is made on the occurrence,development and movement pattern of the vegetation types in this region,aiming at further improving the production capacity of the vegetation.