草原与草坪2026，Vol.46Issue(1)：45-55,11.DOI:10.13817/j.cnki.cyycp.2026.01.006
西天山国家级保护区昆虫多样性的海拔梯度格局及驱动机制
Patterns and driving mechanisms of insect diversity along altitudinal gradients in the west Tianshan National Nature Reserve
摘要
Abstract
[Objective]Altitudinal gradient variation significantly influences the composition and species diversity of insect communities.To investigate the distribution patterns and driving mechanisms of insect communities along mountain vertical zones.[Method]The structure,diversity,and environmental determinants of insect communities across four altitudinal gradients(1 288 m,1 612 m,1 906 m,2 204 m)in the West Tianshan National Nature Re-serve were systematically analyzed in this study.[Result]The results showed that a total of 6,033 insect specimens were collected,belonging to 69 species across 38 families and 9 orders.Among them,Diptera and Hemiptera were the dominant groups,accounting for over 65%of the total abundance.Insect diversity indices(Shannon-Wiener and Mar-galef richness indices)exhibited significant monotonic decline with increasing elevation(P<0.05),peaking at 1 288 m(H'=2.86)and reaching minimum values at 2 204 m(H'=1.12).Altitude(43.4%variance explained)synergis-tically interacted with temperature(28.9%explained)to drive community composition shifts,while vegetation cover(2.6%),vegetation height(1.4%),and light intensity(0.5%)showed weaker effects.The observed altitudinal di-versity patterns primarily resulted from temperature-habitat heterogeneity coupling,with temperature inversion layer effects inducing nonlinear responses of insect diversity to elevation changes.[Conclusion]This study provides foun-dational entomological data for biodiversity conservation in the Tianshan Mountains and advances scientific under-standing of insect community responses to altitudinal gradients.关键词
昆虫群落/物种多样性/群落结构/海拔梯度格局/非线性响应/西天山国家级自然保护区Key words
insect community/species diversity/community structure/altitudinal gradient pattern/nonlinear re-sponse/West Tianshan National Nature Reserve分类
农业科技引用本文复制引用
舒欣,许贞魏,徐萍萍,李东育,依里帆·艾克拜尔江,韩大勇,杨允菲..西天山国家级保护区昆虫多样性的海拔梯度格局及驱动机制[J].草原与草坪,2026,46(1):45-55,11.基金项目
伊犁州科技计划项目"新疆白喉乌头内生真菌次生代谢物对柳蓝叶甲防治研究"(YLUKLM2022002) （YLUKLM2022002）
