气候变化领域集成服务门户(CCPortal): Dominant regions and drivers of the variability of the global land carbon sink across timescales

CCPortal

DOI	10.1111/gcb.14275
	Dominant regions and drivers of the variability of the global land carbon sink across timescales
	Zhang, Xuanze; Wang, Ying-Ping; Peng, Shushi; Rayner, Peter J.; Ciais, Philippe; Silver, Jeremy D.; Piao, Shilong; Zhu, Zaichun; Lu, Xingjie; Zheng, Xiaogu
通讯作者	Peng, S (通讯作者)
发表日期	2018
ISSN	1354-1013
EISSN	1365-2486
起始页码	3954
结束页码	3968
卷号	24 期号:9
英文摘要	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.
关键词	NET PRIMARY PRODUCTION EL-NINO SEMIARID ECOSYSTEMS CLIMATE VARIABILITY FIRE EMISSIONS CO2 MODEL PRODUCTIVITY NITROGEN PROJECTIONS
英文关键词	DGVM; ENSO; global carbon cycle; land carbon sink; PDO; variability
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000441746900008
来源期刊	GLOBAL CHANGE BIOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259376
推荐引用方式 GB/T 7714	Zhang, Xuanze,Wang, Ying-Ping,Peng, Shushi,et al. Dominant regions and drivers of the variability of the global land carbon sink across timescales[J]. 中国科学院青藏高原研究所,2018,24(9).
APA	Zhang, Xuanze.,Wang, Ying-Ping.,Peng, Shushi.,Rayner, Peter J..,Ciais, Philippe.,...&Zheng, Xiaogu.(2018).Dominant regions and drivers of the variability of the global land carbon sink across timescales.GLOBAL CHANGE BIOLOGY,24(9).
MLA	Zhang, Xuanze,et al."Dominant regions and drivers of the variability of the global land carbon sink across timescales".GLOBAL CHANGE BIOLOGY 24.9(2018).