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Soil GHG fluxes are altered by N deposition: New data indicate lower N stimulation of the N2O flux and greater stimulation of the calculated C pools

文献类型：期刊论文

作者Deng, Lei1,2,3; Huang, Chunbo2,4; Kim, Dong-Gill5; Shangguan, Zhouping1,3; Wang, Kaibo6; Song, Xinzhang7; Peng, Changhui1,2
刊名GLOBAL CHANGE BIOLOGY
出版日期2020-01-28
页码17
关键词carbon sink global warming greenhouse gas emissions meta-analysis nitrogen enrichment soil
ISSN号1354-1013
DOI10.1111/gcb.14970
通讯作者Peng, Changhui(peng.changhui@uqam.ca)
英文摘要The effects of nitrogen (N) deposition on soil organic carbon (C) and greenhouse gas (GHG) emissions in terrestrial ecosystems are the main drivers affecting GHG budgets under global climate change. Although many studies have been conducted on this topic, we still have little understanding of how N deposition affects soil C pools and GHG budgets at the global scale. We synthesized a comprehensive dataset of 275 sites from multiple terrestrial ecosystems around the world and quantified the responses of the global soil C pool and GHG fluxes induced by N enrichment. The results showed that the soil organic C concentration and the soil CO2, CH4 and N2O emissions increased by an average of 3.7%, 0.3%, 24.3% and 91.3% under N enrichment, respectively, and that the soil CH4 uptake decreased by 6.0%. Furthermore, the percentage increase in N2O emissions (91.3%) was two times lower than that (215%) reported by Liu and Greaver (Ecology Letters, 2009, 12:1103-1117). There was also greater stimulation of soil C pools (15.70 kg C ha(-1) year(-1) per kg N ha(-1) year(-1)) than previously reported under N deposition globally. The global N deposition results showed that croplands were the largest GHG sources (calculated as CO2 equivalents), followed by wetlands. However, forests and grasslands were two important GHG sinks. Globally, N deposition increased the terrestrial soil C sink by 6.34 Pg CO2/year. It also increased net soil GHG emissions by 10.20 Pg CO2-Geq (CO2 equivalents)/year. Therefore, N deposition not only increased the size of the soil C pool but also increased global GHG emissions, as calculated by the global warming potential approach.
WOS关键词ANTHROPOGENIC NITROGEN DEPOSITION ; GREENHOUSE-GAS EMISSIONS ; CARBON SEQUESTRATION ; METHANE OXIDATION ; INCREASED TEMPERATURE ; NONLINEAR RESPONSES ; PHOSPHORUS ADDITION ; NATURAL VEGETATION ; OXIDE EMISSIONS ; ORGANIC-CARBON
资助项目Chinese Academy of Sciences[XDA23070201] ; National Natural Science Foundation of China[41730638] ; National Natural Science Foundation of China[41877538] ; Special Support Plan of Young Talents Project ; Natural Sciences and Engineering Research Council of Canada ; Promoting Plan to Creative Talents of 'Youth Science and Technology Star'[2018KJXX-088] ; MERITE Postdoc Scholarship Programme
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000509605300001
出版者WILEY
资助机构Chinese Academy of Sciences ; National Natural Science Foundation of China ; Special Support Plan of Young Talents Project ; Natural Sciences and Engineering Research Council of Canada ; Promoting Plan to Creative Talents of 'Youth Science and Technology Star' ; MERITE Postdoc Scholarship Programme
源URL[http://ir.igsnrr.ac.cn/handle/311030/131595]  
专题中国科学院地理科学与资源研究所
通讯作者Peng, Changhui
作者单位1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China
2.Univ Quebec Montreal, Ctr CEF ESCER, Dept Biol Sci, Montreal, PQ H3C 3P8, Canada
3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China
4.China Univ Geosci, Sch Geog & Informat Engn, Wuhan, Peoples R China
5.Hawassa Univ, Wondo Genet Coll Forestry & Nat Resources, Shashemene, Ethiopia
6.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China
7.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou, Zhejiang, Peoples R China
推荐引用方式
GB/T 7714		 Deng, Lei,Huang, Chunbo,Kim, Dong-Gill,et al. Soil GHG fluxes are altered by N deposition: New data indicate lower N stimulation of the N2O flux and greater stimulation of the calculated C pools[J]. GLOBAL CHANGE BIOLOGY,2020:17.
APA Deng, Lei.,Huang, Chunbo.,Kim, Dong-Gill.,Shangguan, Zhouping.,Wang, Kaibo.,...&Peng, Changhui.(2020).Soil GHG fluxes are altered by N deposition: New data indicate lower N stimulation of the N2O flux and greater stimulation of the calculated C pools.GLOBAL CHANGE BIOLOGY,17.
MLA Deng, Lei,et al."Soil GHG fluxes are altered by N deposition: New data indicate lower N stimulation of the N2O flux and greater stimulation of the calculated C pools".GLOBAL CHANGE BIOLOGY (2020):17.

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来源：地理科学与资源研究所

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