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, Lei1,2,3; Huang, Chunbo2,4; Kim, Dong-Gill5; Shangguan, Zhouping1,3; Wang, Kaibo6; Song, Xinzhang7; Peng, Changhui1,2 | |
通讯作者 | Peng, Changhui(peng.changhui@uqam.ca) |
2020-01-28 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
页码 | 17 |
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. |
关键词 | carbon sink global warming greenhouse gas emissions meta-analysis nitrogen enrichment soil |
DOI | 10.1111/gcb.14970 |
关键词[WOS] | ANTHROPOGENIC NITROGEN DEPOSITION ; GREENHOUSE-GAS EMISSIONS ; CARBON SEQUESTRATION ; METHANE OXIDATION ; INCREASED TEMPERATURE ; NONLINEAR RESPONSES ; PHOSPHORUS ADDITION ; NATURAL VEGETATION ; OXIDE EMISSIONS ; ORGANIC-CARBON |
收录类别 | SCI ; SCI |
语种 | 英语 |
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 |
项目资助者 | 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 |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS记录号 | WOS:000509605300001 |
出版者 | WILEY |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/13179 |
专题 | 生态环境研究室 |
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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