高原鼠兔扰动对若尔盖不同退化高寒草地土壤真菌群落的影响  

Impact of Plateau Pika Disturbance on Soil Fungal Communities in Different Degraded Alpine Grasslands in Zoige

作　　者：李静 王青[1] 朱宝龙[2] 郭亚琳[1] 杨敏[1,2] 张玉 胡琪[1] LI Jing;WANG Qing;ZHU Baolong;GUO Yalin;YANG Min;ZHANG Yu;HU Qi(School of Environment and Resource,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《西南科技大学学报》2025年第1期94-106,共13页Journal of Southwest University of Science and Technology

基　　金：四川省自然科学基金项目(2024NSFSC0101)。

摘　　要：为全面了解高原鼠兔扰动对高寒草地土壤真菌群落的作用,分析了若尔盖不同退化高寒草地土壤理化性质、土壤有机碳(SOC)含量、植物生长及土壤真菌群落组成和功能的变化,并比较了其在对照区和鼠兔扰动区的差异。研究结果表明:(1)鼠兔扰动在轻度退化高寒草地(LDM)和中度退化高寒草地(MDM)使真菌操作分类单元提高了79.6%和33.7%(P<0.05),而在重度退化草地(SDM)中降低了41.8%(P<0.05);(2)鼠兔扰动提高了土壤容重、含水率和SOC含量对土壤真菌群落的影响效应;(3)鼠兔扰动在LDM和MDM区域增强了与植物生长相关的真菌功能,促进了植物生长,使SOC含量分别提高了4.3%和10.5%,而在SDM中导致裸土增加,使SOC含量降低了13.1%。鼠兔扰动可通过改变真菌群落的组成和功能影响若尔盖高寒草地SOC含量。To comprehensively understand the effects of plateau pika disturbance on soil fungal communities in alpine grasslands,the changes in soil physicochemical properties,soil organic carbon(SOC)content,plant growth,and soil fungal community composition and function in different degraded alpine grasslands in Zoige were analyzed,and the differences between the control area and the pika disturbance area were compared.The results indicate that:(1)Pika disturbance increases the fungal operational taxonomic units by 79.6%and 33.7%(P<0.05)in lightly degraded alpine grasslands(LDM)and moderately degraded alpine grasslands(MDM),while decreasing them by 41.8%(P<0.05)in severely degraded grasslands(SDM);(2)Pika disturbance enhances the effects of soil bulk density,moisture content,and SOC content on soil fungal communities;(3)Pika disturbance enhances fungal functions related to plant growth in LDM and MDM,promoting plant growth and increasing SOC content by 4.3%and 10.5%,respectively.However,in SDM,pika disturbance leads to an increase in bare soil and decreases SOC content by 13.1%.Pika disturbance can influence SOC content in Zoige alpine grasslands by altering fungal community composition and function.

关 键 词：高寒草地 土壤有机碳 土壤微生物 高原鼠兔 青藏高原 

分 类 号：S154.3[农业科学—土壤学] S812.2[农业科学—农业基础科学]