草原与草坪2025，Vol.45Issue(4)：1-11,11.DOI:10.13817/j.cnki.cyycp.2025.04.001
藏东北高寒草地物种多样性及其影响因素研究
Study on species diversity and its influencing factors of alpine grassland in northeast Tibet
摘要
Abstract
[Objective]Taking the alpine grassland,alpine meadow,and alpine desert steppe ecosystems in the northeastern of the Qinghai-Tibet Plateau as the research subjects,explore the distribution characteristics of species diversity in alpine grasslands and their influencing factors.[Method]One-way ANOVA,random forest and redun-dancy analysis were used to analyze the data.[Result]There were significant differences in Patrick richness index,Shannon-Wiener diversity index,Simpson dominance index and Pielou evenness index among three grassland types(P＜0.001).Soil organic carbon and soil total nitrogen had the most important effects on Patrick abundance index,annual precipitation and altitude had the most important effects on Shannon-Wiener diversity index and Pielou even-ness index.Annual precipitation and soil organic carbon had the most important effects on Simpson dominance index.The cumulative explanation rate of all environmental factors was 66.08％,and the contribution rate of annual precipi-tation to the diversity was the highest.[Conclusion]Grassland type significantly affects species diversity,and annual precipitation is the dominant factor of species diversity change.关键词
青藏高原/高寒草地/物种多样性/分布特征/环境因子Key words
Tibetan Plateau/alpine grassland/species diversity/distribution characteristics/environmental factor分类
农业科技引用本文复制引用
王新,文焱彬,吴桂玲,杜岩功..藏东北高寒草地物种多样性及其影响因素研究[J].草原与草坪,2025,45(4):1-11,11.基金项目
国家自然科学基金联合基金(U21A20186) （U21A20186）
中科院西部之光交叉团队项目(E129351214) （E129351214）
青海省重点研发与转化计划项目(2022-NK-135) （2022-NK-135）
