Unraveling fertilization effects on the dynamics of arbuscular mycorrhizal fungal community in the Qinghai-Tibet Alpine Meadow  

作　　者：Longfei Liu Yi Ren Shuo Sun Chen Liu Kairui Ding Rong Li Pengfei Zhang Biao Shen Mohammadhossein Ravanbakhsh Wu Xiong Qirong Shen 

机构地区：[1]College of Ecology,Lanzhou University,Lanzhou 730000,China [2]Key Lab of Organic-Based Fertilizers of China,Jiangsu Provincial Key Lab for Solid Organic Waste Utilization,Joint International Research Laboratory of Soil Health,Nanjing Agricultural University,Nanjing 210095,China [3]The Sanya Institute of Nanjing Agricultural University,Sanya 572000,China [4]Department of Ecology,Evolution,and Behavior,University of Minnesota,1475 Gortner Ave,St.Paul,MN 55108,USA [5]Ecology and Biodiversity Group,Department of Biology,Institute of Environmental Biology,Utrecht University,Padualaan 8,3584 CH Utrecht,The Netherlands

出　　处：《Soil Ecology Letters》2024年第4期127-136,共10页土壤生态学快报(英文)

基　　金：fundings from the National Natural Science Foundation of China(Grant Nos.32101267 and 42107141);the Start-up Funds of Introduced Talent in Lanzhou University(Grant No.561120205);the Fundamental Research Funds for the Central Universities(Grant Nos.XUEKEN2023039,YDZX2023023,KYQN2022025).

摘　　要：Community structure and composition of AMF shifted under different fertilization.Soil physicochemical properties played important roles in contributing plant diversity and biomass.Fertilization affected plant and AMF communities through changing soil abiotic properties.Acaulospora and Diversispora were highly linked with plant communities.Arbuscular mycorrhizal fungi(AMF)represent a crucial component of soil microorganisms,playing pivotal roles in promoting plant growth by enhancing nutrient availability.However,the responses of AMF communities to different fertilization regimes and their correlations with plant communities in the context of anthropogenic disturbances in alpine meadow ecosystems remain largely unexplored.In this study,we investigated the effects of nitrogen,phosphorus,and combined nitrogenphosphorus fertilization on AMF communities and their interconnections with plant diversity and biomass based on a seven-year long-term experiment conducted on the Qinghai-Tibet Plateau.Our results showed significant shifts in AMF community structure and composition under different fertilization treatments,while the richness of AMF exhibited no remarkable alterations.Notably,soil pH decreased,and electrical conductivity increased with the increasing nitrogen fertilizer application,emerging as pivotal abiotic factors in predicting plant richness and biomass.Fascinatingly,Acaulospora exhibited a positive correlation with plant richness,serving as an important bioindicator of plant richness,while Diversispora emerged as the primary bioindicator of plant biomass.Our findings shed light on potential correlations between AMF community composition and both plant and soil abiotic factors,driven by nitrogen and phosphorus fertilization.We advocate for the critical significance of balanced fertilization in sustaining beneficial plant-soil-AMF interactions in natural ecosystems as well as agricultural soils.

关 键 词：BIODIVERSITY arbuscular mycorrhizal fungi nitrogen and phosphorus fertilizer Qinghai-Tibet Plateau 

分 类 号：S714[农业科学—林学]