Bird diversity and seasonal change in Weiyuanjiang Provincial Nature Reserve,Yunnan
This bird survey was conducted in the Weiyuanjiang Provincial Nature Reserve in Yunnan from August 2021 to September 2022,mainly using the transect method and point count method.A total of 12 monitoring transects were established,covering all habitat types within the reserve.In total,209 bird species were recorded,belonging to 17 orders,62 families,and 139 genera.The most dominant order was Passeriformes,with 137 species recorded,account-ing for 65.6%of the total bird species.The bird fauna was mainly composed of the Oriental Realm,with a total of 141 species,accounting for the largest proportion within the reserve,at 67.46%.Resident birds were the most prevalent group,comprising 167 species and accounting for 79.90%of the bird species in the reserve.The survey also recorded 44 species of rare,endangered,and key protected birds,including Anthracoceros coronatus,a national first class key protect-ed wildlife.Based on seasonal analysis,spring had the highest number of species(200 species),Shannon-Weiner index(5.02),and Simpson index(0.99),while summer had the highest evenness index(0.81).The species richness,Shan-non-Weiner index,evenness index and Simpson index of forest habitats were significantly higher than those of farmland and wetlands in all four seasons.
Weiyuan River,bird diversitycommunity compositionseasonal changediversity index