Abstract: 【Objective】To explore the plant flora and community diversity of Canglong Island National Wetland Park,and provide background data for park construction and maintenance.【Methods】The plant resources in the Canglong Island National Wetland Park were investigated using line survey and ecological sample methods. The plant flora types were classified according to the distribution types of plant families,genera,and species. The Patrick richness index,Simpson diversity index,Shannon-Weiner diversity index,and Pielou evenness index were used to analyze the species diversity of typical plant communities.【Results】There were a total of 190 species belonging to 162 genera and 78 families of plants in the park. Among them,78 families could be divided into 10 distribution types and 2 distribution variants,162 genera could be divided into 14 distribution types and 5 distribution variants,and 190 species could be divided into 5 distribution types. The proportion of tropical distribution types was slightly higher than that of temperate distribution types. There were 26 typical plant communities in the park,with Patrick richness index ranging from 4 to 26,Simpson diversity index ranging from 0.431 4 to 0.925 8,Shannon-Weiner diversity index ranging from 0.961 1 to 2.916 8,and Pielou evenness index ranging from 0.461 5 to 0.938 0.【Conclusion】The plant species composition in the Canglong Island National Wetland Park is relatively rich,and the vegetation community types are diverse. The tropical attributes of the plant flora are slightly higher than the temperate attributes,which is in line with the characteristics of the subtropical climate zone where the park is located.

Key words: Canglong Island National Wetland Park, Plant flora, Plant community diversity