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Analyses on bird community structure and diversity in Songyang County, Zhejiang Province
YU Cigang, GUO Xiaoping, MA Yue, ZHANG Zhenhua, LIU Yan, DONG Shanshan, SUN Shuo
JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2023, Vol. 47 ›› Issue (5) : 231-236.
PDF(1770 KB)
PDF(1770 KB)
Analyses on bird community structure and diversity in Songyang County, Zhejiang Province
【Objective】Birds are an important part of earth’s biodiversity and an indicator for the quality of the ecological environment. In this study, bird community structure and biodiversity in Songyang County, Zhejiang Province were explored. Informations on species, distributions, quantities and habitat status of rare or endangered birds were analyzed in order to support local biodiversity conservation, regional biodiversity monitoring and assessments. 【Method】Songyang County was divided into 17 working grids of 10 km ×10 km, each containing 24 transects. There were three habitat types: woodland, farmland and wetland. The survey period was from December 2020 to November 2021. The diversity of Songyang birds was analyzed by calculating the species richness index, Shannon-Wiener diversity index, Simpson’s diversity index and Pielou’s evenness index; the nested two-way analysis of variance (ANOVA) was used to evaluate the effects of season and habitat. 【Result】 (1) In total, 249 species of wild bird were observed throughout the period, belonging to 18 orders and 62 families. The number of species of bird observed in each season was in the order of spring (195 species) > winter (128 species) > autumn (104 species) > summer (89 species). In total, 52 species appeared in all seasons. The number of bird species observed in various habitats was in the order of wetland (140 species) > woodland (125species) > farmland (109 species). In total, 28 species appeared in all habitats. (2) Among all birds, there were 25 nationally protected animals including 4 first-level and 21 second-level ones. There was 1 critically endangered species, 2 endangered species, 3 vulnerable species and 8 near threatened species according to the International Union for Conservation of Nature (IUCN) red list of threatened species. (3) All bird biodiversity indices (species richness index, Shannon-Wiener diversity index, Simpson’s diversity index and Pielou’s evenness index) were affected significantly by season and habitat (P < 0.01). The species richness index was significantly affected by the interaction of season and habitat, but the Shannon-Wiener diversity index, Simpson’s diversity index, and Pielou’s evenness index were not significantly affected by this interaction (P > 0.05). 【Conclusion】Rich bird diversity in songyang is closely related to the local natural environment and spring has the most bird species. Woodland wetland, and farmland are all important bird habitats, with > 100 species observed in each. Among them, bird abundance in wetland is higher than that in woodland and farmland.
birds / biodiversity / habitat / line transect method / Songyang County, Zhejiang Province
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