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Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget
Liu, Shuwei1,2,3; Ji, Cheng1; Wang, Cong1; Chen, Jie1; Jin, Yaguo1; Zou, Ziheng1,4; Li, Shuqing1,2,3; Niu, Shuli5; Zou, Jianwen1,2,3
2018-07-01
Source PublicationECOLOGY LETTERS
ISSN1461-023X
Volume21Issue:7Pages:1108-1118
Corresponding AuthorZou, Jianwen(jwzou21@njau.edu.cn)
AbstractThe net balance of greenhouse gas (GHG) exchanges between terrestrial ecosystems and the atmosphere under elevated atmospheric carbon dioxide (CO2) remains poorly understood. Here, we synthesise 1655 measurements from 169 published studies to assess GHGs budget of terrestrial ecosystems under elevated CO2. We show that elevated CO2 significantly stimulates plant C pool (NPP) by 20%, soil CO2 fluxes by 24%, and methane (CH4) fluxes by 34% from rice paddies and by 12% from natural wetlands, while it slightly decreases CH4 uptake of upland soils by 3.8%. Elevated CO2 causes insignificant increases in soil nitrous oxide (N2O) fluxes (4.6%), soil organic C (4.3%) and N (3.6%) pools. The elevated CO2-induced increase in GHG emissions may decline with CO2 enrichment levels. An elevated CO2-induced rise in soil CH4 and N2O emissions (2.76 Pg CO2-equivalent year(-1)) could negate soil C enrichment (2.42 Pg CO2 year(-1)) or reduce mitigation potential of terrestrial net ecosystem production by as much as 69% (NEP, 3.99 Pg CO2 year(-1)) under elevated CO2. Our analysis highlights that the capacity of terrestrial ecosystems to act as a sink to slow climate warming under elevated CO2 might have been largely offset by its induced increases in soil GHGs source strength.
KeywordClimate change elevated CO2 greenhouse gas meta-analysis plant C pool soil C and N cycle
DOI10.1111/ele.13078
WOS KeywordATMOSPHERIC CARBON-DIOXIDE ; SOIL ORGANIC-MATTER ; PROCESS RESPONSES ; WATER RELATIONS ; NITROGEN ; PLANT ; METAANALYSIS ; EMISSIONS ; TEMPERATURE ; STORAGE
Indexed BySCI
Language英语
Funding ProjectNatural Science Foundation of China[41771268] ; Natural Science Foundation of China[41225003] ; Natural Science Foundation of China[41771323] ; National Basic Research Program of China[2015CB150502] ; National Key Research and Development Program of China[2016YFD0201200] ; Fundamental Research Funds for the Central Universities[KYTZ201404] ; Fundamental Research Funds for the Central Universities[KYZ201621]
Funding OrganizationNatural Science Foundation of China ; National Basic Research Program of China ; National Key Research and Development Program of China ; Fundamental Research Funds for the Central Universities
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEcology
WOS IDWOS:000435270600016
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54707
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZou, Jianwen
Affiliation1.Nanjing Agr Univ, Jiangsu Key Lab Low Carbon Agr & GHGs Mitigat, Coll Resources & Environm Sci, Nanjing, Jiangsu, Peoples R China
2.Nanjing Agr Univ, Jiangsu Key Lab, Nanjing, Jiangsu, Peoples R China
3.Nanjing Agr Univ, Engn Ctr Solid Organ Waste Utilizat, Jiangsu Collaborat Innovat Ctr Solid Organ Waste, Nanjing, Jiangsu, Peoples R China
4.Nanjing Tech Univ, Coll Overseas Educ, Nanjing, Jiangsu, Peoples R China
5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shuwei,Ji, Cheng,Wang, Cong,et al. Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget[J]. ECOLOGY LETTERS,2018,21(7):1108-1118.
APA Liu, Shuwei.,Ji, Cheng.,Wang, Cong.,Chen, Jie.,Jin, Yaguo.,...&Zou, Jianwen.(2018).Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget.ECOLOGY LETTERS,21(7),1108-1118.
MLA Liu, Shuwei,et al."Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget".ECOLOGY LETTERS 21.7(2018):1108-1118.
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