Characteristics of shrub insect community and its response to environmental factors and plant community characteristics in the Irtysh River Basin
To explore the distribution of shrub insect communities on a large spatial scale,the character-istics of these insect communities were investigated in 44 plots across seven counties (cities) in the Al-tay region of the Irtysh River Basin from June to September 2023. This study aimed to determine their occurrence status and analyze the relationship between shrub insect species richness and plant commu-nity characteristics as well as environmental factors using regression analysis and canonical correspon-dence analysis (CCA). The results showed a total of 1245 insects collected across the 44 plots,identi-fied as 117 species from 44 families and nine orders. Lepidoptera and Coleoptera were the dominant groups,with 440 and 289 individuals,respectively. Neuroptera and Hemiptera were the secondary domi-nant groups,with 214 and 157 individuals,respectively. The remaining orders were subordinate groups. The species richness of shrub insects in the Ehe River Basin showed a significant trinomial fitting rela-tionship with altitude and temperature. There was a significant binomial fitting relationship with relative abundance,and a significant linear relationship with the Pielou evenness index. In addition,there were significant binomial relationships with both the Simpson diversity index and the Margalef richness in-dex. The CCA analysis results indicated that temperature,longitude,and altitude were the main environ-mental factors influencing the distribution of shrub insects. The diversity and uniformity of shrub plants were the key plant community characteristics affecting this distribution. It is suggested that there is an obvious driving force behind the distribution of shrub insects on a large spatial scale. It recommends that attention be given to the rectification of vegetation structure and the monitoring and prevention of harmful shrub insects in the context of global environmental changes.
shrubinsectenvironment factorplant community characteristicspecies diversitycanonical correspondence analysis
万方数据
维普
