Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget

doi:10.1111/ele.13078

	Climatic role of terrestrial ecosystem under elevated CO2: a bottom-up greenhouse gases budget
	Liu, Shuwei 1,2,3; Ji, Cheng 1; Wang, Cong 1; Chen, Jie 1; Jin, Yaguo 1; Zou, Ziheng 1,4; Li, Shuqing 1,2,3; Niu, Shuli 5; Zou, Jianwen 1,2,3
刊名	ECOLOGY LETTERS
	2018-07-01
卷号	21 期号:7 页码:1108-1118
关键词	Climate change elevated CO2 greenhouse gas meta-analysis plant C pool soil C and N cycle
ISSN号	1461-023X
DOI	10.1111/ele.13078
通讯作者	Zou, Jianwen(jwzou21@njau.edu.cn)
英文摘要	The 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.
资助项目	Natural 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]
WOS关键词	ATMOSPHERIC CARBON-DIOXIDE ; SOIL ORGANIC-MATTER ; PROCESS RESPONSES ; WATER RELATIONS ; NITROGEN ; PLANT ; METAANALYSIS ; EMISSIONS ; TEMPERATURE ; STORAGE
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000435270600016
资助机构	Natural 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
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54706]
专题	中国科学院地理科学与资源研究所
通讯作者	Zou, Jianwen
作者单位	1.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
推荐引用方式 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.