Plant Community Distribution and Dominant Species in Baishuihe National Nature Reserve, Sichuan Province

Based on field vegetation survey and the classification principles and basis of Sichuan Vegetation, the natural vegetation in the reserve can be divided into 6 vegetation types, 11 flora classes and 25 flora. Among them, 14 community types were maily distributed in 1400—2000 m altitude, 3 community types in 2000—2500 m altitude, 3 community types in 2500—3000 m altitude, 9 community types in 3000—3500 m altitude, 4 community types in 3500—4000 m altitude, and 2 community types in 4000—4800 m altitude. The dominant species of trees, shrubs and herbaceous layers of different community types at different altitudes were counted by the important values. It was recommended to establish an effective protection system, strengthening propaganda and education, monitoring management and scientific research to protect the plant vegetation resources in Baishuihe National Nature Reserve.