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Nitrogen deposition accelerates greenhouse gas emissions at an alpine steppe site on the Tibetan Plateau

文献类型：期刊论文

作者Qu, Songbo3,5; Xu-Ri3,4; Yu, Jiaoneng3,5; Li, Fengzi1,3; Wei, Da2,3; Borjigidai, Almaz5
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2021-04-15
卷号765页码:11
关键词N deposition C sequestration CO2 efflux CH4/N2O fluxes Tibetan Plateau
ISSN号0048-9697
DOI10.1016/j.scitotenv.2020.144277
通讯作者Xu-Ri(xu-ri@itpcas.ac.cn) ; Borjigidai, Almaz(almaz_b@muc.edu.cn)
英文摘要The increase in atmospheric N deposition can alter the exchange of greenhouse gas (GHG) between the biosphere and atmosphere. The effect of N deposition on GHG is poorly understood in alpine steppe. Therefore, we conducted a 4-year experiment with multilevel N addition of 0, 10, 20, 40, 80, 160 kg N ha(-1) using the static chamber and gas chromatographymethod to quantify responses of GHG fluxes and characterize the relationship between GHG fluxes andNaddition rate in Namco located in the alpine steppe in the central Tibetan Plateau (TP). Themean CO2 efflux, CH4 uptake, N2O emission during growing seasons across four years were 33.59 +/- 16.41mg C m(-2) h(-1), -56.42 +/- 29.20 mu g C m(-2) h(-1), 0.67 +/- 4.40 mu g N m-2 h-1 respectively. CO2 efflux increased 1.55-22.6%, CH4 uptake decreased 5.96-20.1%, N2O emission increased 37.3-133.5% with N addition. Wealso observed a critical threshold of 40 kgN ha(-1) a(-1) of Naddition abovewhich the increase rate of N2O emissionwould diminish. Our current results implied that under the background of future N deposition, N induced C sequestration might be offset by GHG balance causing a heating effect to the climate. (C) 2020 Elsevier B.V. All rights reserved.
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDA20050102] ; National Natural Science Foundation of China[41575152] ; National Natural Science Foundation of China[41775161] ; National Natural Science Foundation of China[81573535] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0606] ; Natural Science Foundation of Beijing[7202109] ; Minzu University of China[KLEM-ZZ201805] ; [MUC2020-15]
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000616232300100
出版者ELSEVIER
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program ; Natural Science Foundation of Beijing ; Minzu University of China
源URL[http://ir.imde.ac.cn/handle/131551/55974]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
通讯作者Xu-Ri; Borjigidai, Almaz
作者单位1.Inner Mongolian Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Key Lab Alpine Ecol & Biodivers, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Minzu Univ China, Key Lab Ethnomed, Minist Educ, Beijing 100081, Peoples R China
推荐引用方式
GB/T 7714		 Qu, Songbo,Xu-Ri,Yu, Jiaoneng,et al. Nitrogen deposition accelerates greenhouse gas emissions at an alpine steppe site on the Tibetan Plateau[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,765:11.
APA Qu, Songbo,Xu-Ri,Yu, Jiaoneng,Li, Fengzi,Wei, Da,&Borjigidai, Almaz.(2021).Nitrogen deposition accelerates greenhouse gas emissions at an alpine steppe site on the Tibetan Plateau.SCIENCE OF THE TOTAL ENVIRONMENT,765,11.
MLA Qu, Songbo,et al."Nitrogen deposition accelerates greenhouse gas emissions at an alpine steppe site on the Tibetan Plateau".SCIENCE OF THE TOTAL ENVIRONMENT 765(2021):11.

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来源：成都山地灾害与环境研究所

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