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

doi:10.1111/gcb.14970

	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
	Deng, Lei 2,3,5; Huang, Chunbo 3,4; Kim, Dong-Gill 6; Shangguan, Zhouping 2,5; Wang, Kaibo 1; Song, Xinzhang 7; Peng, Changhui 2,3
刊名	GLOBAL CHANGE BIOLOGY
	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
DOI	10.1111/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.
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
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000509605300001
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
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13178]
专题	地球环境研究所_生态环境研究室
通讯作者	Peng, Changhui
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shaanxi, Peoples R China 3.Univ Quebec Montreal, Ctr CEF ESCER, Dept Biol Sci, Montreal, PQ H3C 3P8, Canada 4.China Univ Geosci, Sch Geog & Informat Engn, Wuhan, Peoples R China 5.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling, Shaanxi, Peoples R China 6.Hawassa Univ, Wondo Genet Coll Forestry & Nat Resources, Shashemene, Ethiopia 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.