Relationship between insect community and plant diversity and functional traits of different slope orientation of mountain meadow in western Tianshan Mountains
[Objective]In order to further elucidate the effect of slope orientation on insect community,the rela-tionship between insect community of different slope orientation and plant diversity and functional traits was explored.[Method]In this paper,the mountain meadow of West Tianshan National Nature Reserve was taken as the research object. The species composition and diversity characteristics of insect communities in three habitats of shady slope,sunny slope and slope top were analyzed by field vegetation and insect sampling methods,so as to explore its relation-ship with plant diversity and functional traits.[Result]1) The insect species in the mountain meadow were rich and diverse,belonging to 8 orders and 172 species. Diptera and Hemiptera were the dominant species,accounting for 77.02％ and 21.32％ of the individual number,respectively. The number of insects on the shady slope was the high-est,which was 4399,followed by the top and sunny slopes,which were 2750 and 1959,respectively.2) The charac-teristic index of insect community was significantly different in sunny slope,shady slope and slope top,and the charac-teristic index of insect community in sunny slope was the highest.3) The effects of plant diversity and functional traits on insect community were different (P<0.01). Leaf length was significantly correlated with the dominance index and abundance index of insect community (P<0.01). Plant height was significantly correlated with the richness in-dex of insect community (P<0.01). There was no significant correlation between plant species and insect diversity.[Conclusion]In summary,the leaf length and plant height of the plant functional traits in the mountain meadow of the Western Tianshan Reserve are the main factors affecting the insect community in the western Tianshan mountain meadow.
insect community structurevegetation characteristicsmountain meadowWest Tianshan National Nature ReserveIli river valley
万方数据
维普
