高原鼢鼠(Eospalax baileyi)干扰对土壤真菌群落分布和共现网络模式的影响OA
The disturbance by plateau zokors(Eospalax baileyi)impacts the distribution and co-occurrence network patterns of soil fungal communities
[目的]探究高原鼢鼠活动对土壤真菌群落及共现网络的影响.[方法]以天祝藏族自治县抓喜秀龙乡境内的高寒草地为研究对象,选择不同演替阶段的鼢鼠鼠丘[一年生(MO)、二年生(MT)、三年生(MH)和多年生(MF)鼠丘]作为试验处理,未受干扰的草地作为对照组(CK).通过ITS rRNA高通量测序技术,对土壤真菌群落的组成,结构,共现网络和功能进行分析.[结果]在门水平上,子囊菌门(Ascomycota)和担子菌门(Basidiomycota)是土壤中的主要优势菌门;在属水平上,被孢霉属(Mor-tierella)和古根菌属(Archaeorhizomyces)是主要的优势菌属;不同处理对土壤真菌 Simpson、Shannon和Chao1指数无显著影响,但显著影响ACE指数(P<0.05)..非度量多维尺度(NMDS)分析表明,真菌β-多样性在未受干扰的草地和不同演替阶段的鼠丘之间存在差异.共现网络分析揭示,与CK相比,不同演替阶段的鼠丘土壤真菌群落的网络复杂度较高,尤其是二年生鼠丘(MT)具有最高的网络复杂性.基于Funguild的功能预测分析发现,共生营养型真菌在群落中占主导地位.[结论]高原鼢鼠干扰显著影响了土壤真菌群落的结构及功能.
[Objective]This study aimed to evaluate the impact of plateau zokor(Eospalax baileyi)activity on soil fungal communities and co-occurrence networks.[Method]A study was conducted in the alpine grasslands of Zhuaxixiulong Township,Tianzhu Tibetan Autonomous County.The research involved selecting zokor mounds at different successional stages:MO(one-year-old),MT(two-year-old),MH(three-year-old),and MF(multi-year-old)were selected as experimental treatments,with undisturbed grassland serving as the control(CK).Using ITS rRNA high-throughput sequencing technology,the composition,structure,co-occurrence network,and functional as-pects of soil fungal communities were comprehensively analyzed.[Result]At the phylum level,Ascomycota and Ba-sidiomycota were the dominant fungal phyla in the soil.At the genus level,Mortierella and Archaeorhizomyces were the predominant genera.The different successional stages of zokor mounds did not significantly affect soil fungal α-di-versity.Non-metric multidimensional scaling(NMDS)analysis showed that fungal β-diversity differed between the undisturbed grassland and zokor mounds at various successional stages.Co-occurrence network analysis revealed that the soil fungal community networks in zokor mounds at different successional stages had higher complexity compared to the control group(CK),with the two-year-old zokor mounds(MT)showing the highest network complexity.Functional prediction analysis based on Funguild indicated that symbiotic fungi dominated the community.[Conclusion]The disturbance caused by plateau zokors significantly affects the structure and function of soil fungal communities.
张晓娟;包爱霞;王志文;王一鸣;陈广军;岳磊;廖珂;陈先敏;唐庄生
甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070甘肃农业大学草业学院,草业生态系统教育部重点实验室,甘肃省草业工程实验室,中-美草地畜牧业可持续发展研究中心,甘肃 兰州 730070
农业科技
高原鼢鼠土壤真菌群落青藏高原高寒草地
plateau zokorsoil fungi communityQinghai-Tibet Plateaualpine meadow
《草原与草坪》 2026 (4)
40-50,11
国家自然科学基金项目(32360345,32001385)甘肃农业大学伏羲青年英才项目(GAUfx-04Y06)甘肃农业大学青年导师基金项目(GAU-QDFC-2021-01)
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