Effect of soil archaea on N_(2)O emission in alpine permafrost  

作　　者：YuZheng Gu ChenJie Dong ShengYun Chen JingWei Jin PeiZhi Yang JianWei Chen PeiJie Wei Ali Bahadur 

机构地区：[1]College of Grassland Agriculture,Northwest A&F University,Yangling,Shaanxi 712100,China [2]Cryosphere and Eco-Environment Research Station of Shule River Headwaters,Key Laboratory of Cryospheric Science and Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou,Gansu 730000,China [3]College of Ecology,Lanzhou University,Lanzhou,Gansu 730000,China [4]BGI-Qingdao,BGI-Shenzhen,Qingdao,Shandong 266555,China [5]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Research in Cold and Arid Regions》2024年第2期45-62,共18页寒旱区科学（英文版）

基　　金：This work was supported by Gansu Provincial Science and Technology Program(22ZD6FA005);"Light of the West"Cross-team Project of the Chinese Academy of Sciences(xbzgzdsys-202214);the National Natural Science Foundation of China(41871064);Qinghai Province High-level Innovative"Thousand Talents"Program.

摘　　要：Soil microbial communities are pivotal in permafrost biogeochemical cycles,yet the variations of abundant and rare microbial taxa and their impacts on greenhouse gas emissions in different seasons,remain elusive,especially in the case of soil archaea.Here,we conducted a study on soil abundant and rare archaeal taxa during the growing and non-growing seasons in the active layer of alpine permafrost in the Qinghai-Tibetan Plateau.The results suggested that,for the archaeal communities in the sub-layer,abundant taxa exhibited higher diversity,while rare taxa maintained a more stable composition from the growing to non-growing season.Water soluble organic carbon and soil porosity were the most significant environmental variables affecting the compositions of abundant and rare taxa,respectively.Stochastic and deterministic processes dominated the assemblies of rare and abundant taxa,respectively.The archaeal ecological network influenced N_(2)O flux through different modules.Rare taxa performed an essential role in stabilizing the network and exerting important effects on N_(2)O flux.Our study provides a pioneering and comprehensive investigation aimed at unravelling the mechanisms by which archaea or other microorganisms influence greenhouse gas emissions in the alpine permafrost.

关 键 词：Alpine permafrost Abundant and rare archaea Assembly processes Co-occurrence network N_(2)O flux 

分 类 号：S154.3[农业科学—土壤学]