Abstract: The effect of habitat type on community diversity is a fundamental concern in ecology. In this study, we estimated taxonomic, functional, and phylogenetic diversity of bird community in four habitats (farmland, woodland, wetland, and urban area) in Funing County, Jiangsu Province in 2018-2019. A total of 115 species belonging to 15 orders and 40 families were recorded. Woodland had the highest value of taxonomic diversity, followed by farmland, wetland, and urban area. However, farmland showed the highest values of phylogenetic and functional diversity. There was no seasonal variation in bird diversity. Habitat type was more important than season in shaping bird community diversity. Standard effect size of each phylogenetic and functional diversity metrics in different habitats was significantly less than zero, indicating that environmental filtering was the main driver of bird community assembly. With comprehensive multi-dimensional diversity analysis, our results indicated that environmental heterogeneity help maintain high bird diversity and the diverse habitats provide strong support for high bird community diversity.

Key words: bird community, taxonomic diversity, phylogenetic diversity, functional diversity, farmland ecosystem.