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Dominant regions and drivers of the variability of the global land carbon sink across timescales
Zhang, XZ (Zhang, Xuanze)1; Wang, YP (Wang, Ying-Ping)2,3; Peng, SS (Peng, Shushi)1; Rayner, PJ (Rayner, Peter J.)4; Ciais, P (Ciais, Philippe)5; Silver, JD (Silver, Jeremy D.)4; Piao, SL (Piao, Shilong)1,6,7; Zhu, ZC (Zhu, Zaichun)1; Lu, XJ (Lu, Xingjie)8; Zheng, XG (Zheng, Xiaogu)9
Source PublicationGLOBAL CHANGE BIOLOGY
2018-09-01
Volume24Issue:9Pages:3954-3968
DOI10.1111/gcb.14275
Abstract

Net biome productivity (NBP) dominates the observed large variation of atmospheric CO2 annual increase over the last five decades. However, the dominant regions controlling inter-annual to multi-decadal variability of global NBP are still controversial (semi-arid regions vs. temperate or tropical forests). By developing a theory for partitioning the variance of NBP into the contributions of net primary production (NPP) and heterotrophic respiration (R-h) at different timescales, and using both observation-based atmospheric CO2 inversion product and the outputs of 10 process-based terrestrial ecosystem models forced by 110-year observational climate, we tried to reconcile the controversy by showing that semi-arid lands dominate the variability of global NBP at inter-annual (<10years) and tropical forests dominate at multi-decadal scales (>30years). Results further indicate that global NBP variability is dominated by the NPP component at inter-annual timescales, and is progressively controlled by R-h with increasing timescale. Multi-decadal NBP variations of tropical rainforests are modulated by the Pacific Decadal Oscillation (PDO) through its significant influences on both temperature and precipitation. This study calls for long-term observations for the decadal or longer fluctuations in carbon fluxes to gain insights on the future evolution of global NBP, particularly in the tropical forests that dominate the decadal variability of land carbon uptake and are more effective for climate mitigation.

Subject Area生态学
WOS IDWOS:000441746900008
Language英语
Indexed BySCIE
KeywordNet Primary Production El-nino Semiarid Ecosystems Climate Variability Fire Emissions Co2 Model Productivity Nitrogen Projections
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Ecology ; Environmental Sciences
Cooperation Status国际
ISSN1354-1013
Department高寒生态重点实验室
PublisherWILEY
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8557
Collection图书馆
Corresponding AuthorPeng, SS (Peng, Shushi)
Affiliation1. Peking Univ, Coll Urban & Environm Sci, Sinofrench Inst Earth Syst Sci, Beijing, Peoples R China;
2.Chinese Acad Sci, South China Bot Garden, Guangzhou, Guangdong, Peoples R China;
3.CSIRO Oceans & Atmosphere, Aspendale, Vic, Australia;
4.Univ Melbourne, Sch Earth Sci, Melbourne, Vic, Australia;
5.Univ Paris Saclay, LSCE, IPSL, CEA,CNRS,UVSQ, Gif Sur Yvette, France;
6.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China;
7.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
8.Univ Oklahoma, Dept Bot & Microbiol, Norman, OK 73019 USA;
9.Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China.
Recommended Citation
GB/T 7714
Zhang, XZ ,Wang, YP ,Peng, SS ,et al. Dominant regions and drivers of the variability of the global land carbon sink across timescales[J]. GLOBAL CHANGE BIOLOGY,2018,24(9):3954-3968.
APA Zhang, XZ .,Wang, YP .,Peng, SS .,Rayner, PJ .,Ciais, P .,...&Zheng, XG .(2018).Dominant regions and drivers of the variability of the global land carbon sink across timescales.GLOBAL CHANGE BIOLOGY,24(9),3954-3968.
MLA Zhang, XZ ,et al."Dominant regions and drivers of the variability of the global land carbon sink across timescales".GLOBAL CHANGE BIOLOGY 24.9(2018):3954-3968.
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