Analysis of Insect diversity in Qilian County,Qinghai Province
In order to understand the diversity and change of insect community in Qilian County,Qinghai Province,this study chose A Rou Township and Yanglong Township in Qilian County as the study area,and investigated the species and quantity of insect community in Qilian County by using Z-shaped sweeping net method.The results showed that a total of 11 622 insect specimens were collected and identified,belonging to 9 orders,53 families,103 genera and 170 species.The dominant groups were Diptera,Coleoptera,Orthoptera,Hymenoptera and Hemip-tera.Among the insect specimens collected in 2021,the Shannon-Wiener diversity index,Pielou evenness index and Margalef richness index of Diptera were the highest,and the Simpson dominance index of Orthoptera was the highest.In 2022,the Shannon-Wiener diversity index,Pielou evenness index and Simpson dominance index of He-miptera were the highest,and the Margalef richness index of Diptera was the highest.Through two-year compari-son,the indices of Hemiptera and Diptera were in a stable state,while the indices of Orthoptera were significantly reduced.On the whole,the diversity index of insect community increased significantly in 2022,and the community structure tended to be stable.
insectdiversity indexcommunity structureQilian County