首页|Effect of soil archaea on N2O emission in alpine permafrost

Effect of soil archaea on N2O emission in alpine permafrost

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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 N2O flux through different modules.Rare taxa performed an essential role in stabilizing the network and exerting important effects on N2O 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.

Alpine permafrostAbundant and rare archaeaAssembly processesCo-occurrence networkN2O flux

YuZheng Gu、ChenJie Dong、ShengYun Chen、JingWei Jin、PeiZhi Yang、JianWei Chen、PeiJie Wei、Ali Bahadur

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College of Grassland Agriculture,Northwest A&F University,Yangling,Shaanxi 712100,China

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

College of Ecology,Lanzhou University,Lanzhou,Gansu 730000,China

BGI-Qingdao,BGI-Shenzhen,Qingdao,Shandong 266555,China

University of Chinese Academy of Sciences,Beijing 100049,China

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Gansu Provincial Science and Technology Program"Light of the West"Crossteam Project of the Chinese Academy of SciencesNational Natural Science Foundation of ChinaQinghai Province Highlevel Innovative "Thousand Talents"Program

22ZD6FA005xbzgzdsys-20221441871064

2024

10.1016/j.rcar.2024.04.002

寒旱区科学(英文版)
中国科学院寒区旱区环境与工程研究所,科学出版社有限责任公司

寒旱区科学(英文版)

影响因子：0.237
ISSN：1674-3822
年,卷(期)：2024.16(2)
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