草业学报2025，Vol.34Issue(6)：99-109,11.DOI:10.11686/cyxb2024280
黄帚橐吾密度对土壤微生物群落特征的影响
Response of soil microbial community diversity to patch density of Ligularia virgaurea
摘要
Abstract
There exist close and complex interactions between soil microorganisms and plants,and it is essential to understand the relationship between plants and soil microbial communities in grassland ecosystems.This study investigated the soil bacterial and fungal populations in Ligularia virgaurea patches of different density.Specifically,patches were identified exhibiting a gradient of six patch densities(D0,D1,D2,D3,D4,and D5).High-throughput sequencing technology was used to analyze the structural changes of bacterial and fungal communities in patches of different density,and to explore the effects of L.virgaurea density on the soil microbial community structure in alpine grasslands.The results showed that the presence of L.virgaurea patches significantly affected the diversity and abundance of soil microbial communities.Proteobacteria was the dominant bacrerial phylum,while Ascomycota,Basidiomycota,and Mortierellomycota were the dominant fungal phyla,and their relative abundances varied significantly among patches.The α-diversity index of soil bacterial communities did not differ significantly between different patches.However,the Chaol and ACE index of the fungal community were significantly higher(P<0.05)in D2 than in D5 patches,and the Shannon and Simpson index were significantly higher in D2 and D5 patches than in D3(P<0.05),indicating higher diversity of fungal communities in D2 patches.In summary,the density of L.virgaurea can affect the structure and diversity of soil microbial communities,changing the richness of dominant microbial groups.This result not only reveals the impact of L.virgaurea patches on the species composition and diversity of soil microbial communities,but also enriches our understanding of microbial diversity in alpine grasslands.These data add to the growing body of information available to aid the protection and sustainable utilization of alpine grassland ecosystems.关键词
黄帚橐吾/密度/土壤微生物/群落组成Key words
Ligularia virgaurea/density/soil microorganism/community composition引用本文复制引用
王玉琴,宋梅玲,周睿,王宏生..黄帚橐吾密度对土壤微生物群落特征的影响[J].草业学报,2025,34(6):99-109,11.基金项目
青海省科技厅应用基础研究项目(2023-ZJ-723),国家自然科学联合基金项目(U21A20183),青海大学教育部重点实验室自主课题(2023-SJY-ZZ-01)和青海省"高端创新创业人才计划"拔尖人才培养计划项目资助. （2023-ZJ-723）
