生态学杂志2024，Vol.43Issue(6)：1629-1637,9.DOI:10.13292/j.1000-4890.202406.024
高原鼢鼠干扰对高寒草甸植物功能性状及功能多样性的影响
Effects of plateau zokor disturbance on functional traits and functional diversity of plants in alpine meadow
摘要
Abstract
To clarify the effects of plateau zokor(Eospalax baileyi)disturbance on functional traits and functional diversity of plants in alpine meadows,we utilized the spatial pattern index of zokor mounds to quantify disturbance intensity.A section of plateau zokor habitat on the eastern edge of the Qinghai-Tibet Plateau was segmented into four disturbance levels of light,moderate,severe,and extremely severe disturbance,with plots devoid of zokor mounds being served as a control.We measured plant species richness,functional traits of common plants,and soil physicochemical characteristics in all the plots.One-way ANOVA was applied to assess the variations in functional traits and functional diversity across the disturbance gradient.Additionally,full subset regression and redundancy analysis were employed to determine the influence of environmental factors on plant functional traits and functional diversity.The results showed that:(1)compared to the control,under the disturbance of plateau zokor,the com-munity weighted mean of relative chlorophyll content and leaf carbon content significantly increased(P＜0.05),while plant height,specific leaf area,and leaf nitrogen content in the disturbed areas significantly decreased(P＜0.05);(2)Under the disturbance of plateau zokor,plant functional richness significantly increased(P＜0.05),whereas functional divergence and the RaoQ index significantly decreased(P＜0.05);(3)The differences in func-tional traits and functional diversity were marginal across the various levels of zokor disturbance intensity.(4)Re-sults of redundancy analysis and full subset regression analysis showed that soil moisture and temperature were the main factors affecting the functional diversity of alpine meadow plants,with soil environmental factors explaining 41.6％and 27.3％of the variance in functional traits and functional diversity,respectively.Our results suggested that plateau zokor disturbance changed soil environmental factors(temperature and moisture),which in turn affect-ed plant functional traits and functional diversity.关键词
青藏高原/高寒草甸/高原鼢鼠/植物功能性状/功能多样性Key words
Qinghai-Tibet Plateau/alpine meadow/plateau zokor/plant functional trait/functional diversity引用本文复制引用
王磊,包达尔罕,董隆明,余涛,叶国辉,花立民..高原鼢鼠干扰对高寒草甸植物功能性状及功能多样性的影响[J].生态学杂志,2024,43(6):1629-1637,9.基金项目
国家自然科学基金项目(32160338)和甘肃省教育厅产业支撑计划项目(2021CYZC-05)资助. （32160338）
