Species Diversity and Fauna Analysis of Butterfly in Meixian Yinna Mountain Provincial Nature Reserve of Guangdong Province
The butterfly resources and species diversity in Meixian Yinna Mountain Provincial Nature Re-serve of Guangdong Province was studied by the line-transect method from July to December 2021.The results showed that 110 species of butterflies belonging to 75 genera and 10 families were investigated in the reserve;the fauna distribution type was mainly dominated by the Oriental,supplemented by the Pa-laearctic and Oriental;the number of genera,species,individuals,dominance index,richness index and diversity index of butterfly community at each altitude gradient showed a single peak trend of increasing first and then decreasing with the increase of altitude,reaching the maximum at 401-600 m,and the evenness index was higher at high altitude than at low altitude;the similarity coefficient was higher in the adjacent elevation gradient,and there were obvious differences between high altitude species and low alti-tude species.The results of this survey provided basic data and theoretical basis for predicting climate change,protecting butterfly resources and evaluating ecological environment in Yinna Mountain Provincial Nature Reserve.