Dynamics of Coleoptera Community in Different Vegetation in Hangzhou Bay Wetland

From March 2021 to April 2022, captures were carried out on Coleoptera in four vegetation like new wetland, tidal flat, polder reclamation, experimental forest by different traps in Hangzhou Bay wetland. There were 108 species of 19 families of Coleoptera, dominated by Chrysomelidae, Coccinellidae, Carabidae, Curculionidae, etc. There were significant differences in the diversity of Coleoptera among different vegetation types. The diversity of Coleoptera in polder reclamation was significantly higher than that in the other three, while Shannon-Wiener diversity index, Pielou evenness index, and Simpson dominance and richness index in the experimental forest were significantly higher than that in the other three. The diversity of Coleoptera was the highest in summer and autumn, Shannon-Wiener diversity index, Simpson dominance index and species richness index in autumn was the highest, and the highest Pielou evenness index was in summer. There were significant differences of Jaccard coefficient similarity among different seasons in the same vegetation as well as among different vegetation in the same season. PCoA analysis showed significant differences of population structure of Coleoptera in different vegetation. RDA analysis demonstrated that populations were influenced vegetation biomass, number of vegetation species, and vegetation coverage.