毛乌素沙地不同恢复年限植物多样性与群落稳定性特征及其关系

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中图分类号：S812.6 文献标识码：A 文章编号：1007-0435（2025）09-2880-10

Characteristics and Relationships between Plant Diversity and Community Stability across Different Restoration Years in the Mu Us Sandy Land

WU Pei-tong1，WEN Zhong-ming12*， ZHENG Cheng1，YUAN Liu-huan1，TAN Kai¹， WANG Zhi-peng1，SHI Chang-chun³，MA Ya-li³， ZHANG Yan³ （1.CollegeofGrassandAgriculture，NorthwestAgricultureandForestryUniversity，Yangling，haanxirovince7oCina; 2.InstituteofladateroervatiAglingaiProiceoina；3.anicadeFrestr， Xi'an，Shaanxi Province 71Oo28，China）

Abstract：Ecological restoration in desertified regions represents acritical frontier in contemporary ecological research.However，the dynamic relationship between plant community diversity and stability over long-term restoration periods remains poorly understood.This study investigated the characteristics of plant community diversity，stability，and their associations with soil factors across Varying restoration durations in the Mu Us SandyLand.The results indicated that Simpson's diversity index and Pielou's evennessindex increased significantly with increased restoration duration，accompanied by a marked enhancement in community stability.A significantly positive correlation was observed between community stability and Simpson's diversity index，demonstrating that plant diversity exerted a substantial influence on stabilizing community structure.Furthermore， soil organic mater，total nitrogen，and soil water content were identified as key factors governing both plant diversity and community stability. These findings elucidatethe dynamic interdependencies between plant diver sity and ecosystem stability during arid-land restoration，providing a scientific foundation foroptimizing ecological rehabilitation strategies and combating desertification in the Mu Us Sandy Land. Key Words：Mu Us Sandy Land ; Ecosystem restoration;Community stability;Desertification control

植物群落物种多样性与群落稳定性是生态学研究中的重要议题[1-2]。（剩余15098字）