气候变化领域集成服务门户(CCPortal): Lower land-use emissions responsible for increased net land carbon sink during the slow warming period

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DOI	10.1038/s41561-018-0204-7
	Lower land-use emissions responsible for increased net land carbon sink during the slow warming period
	Piao, Shilong; Huang, Mengtian; Liu, Zhuo; Wang, Xuhui; Ciais, Philippe; Canadell, Josep G.; Wang, Kai; Bastos, Ana; Friedlingstein, Pierre; Houghton, Richard A.; Le Quere, Corinne; Liu, Yongwen; Myneni, Ranga B.; Peng, Shushi; Pongratz, Julia; Sitch, Stephen; Yan, Tao; Wang, Yilong; Zhu, Zaichun; Wu, Donghai; Wang, Tao
通讯作者	Piao, S (通讯作者)
发表日期	2018
ISSN	1752-0894
EISSN	1752-0908
起始页码	739
结束页码	+
卷号	11 期号:10
英文摘要	The terrestrial carbon sink accelerated during 1998-2012, concurrently with the slow warming period, but the mechanisms behind this acceleration are unclear. Here we analyse recent changes in the net land carbon sink (NLS) and its driving factors, using atmospheric inversions and terrestrial carbon models. We show that the linear trend of NLS during 1998-2012 is about 0.17 +/- 0.05 Pg C yr(-2), which is three times larger than during 1980-1998 (0.05 +/- 0.05 Pg C yr(-2)). According to terrestrial carbon model simulations, the intensification of the NLS cannot be explained by CO2 fertilization or climate change alone. We therefore use a bookkeeping model to explore the contribution of changes in land-use emissions and find that decreasing land-use emissions are the dominant cause of the intensification of the NLS during the slow warming period. This reduction of land-use emissions is due to both decreased tropical forest area loss and increased afforestation in northern temperate regions. The estimate based on atmospheric inversions shows consistently reduced land-use emissions, whereas another bookkeeping model did not reproduce such changes, probably owing to missing the signal of reduced tropical deforestation. These results highlight the importance of better constraining emissions from land-use change to understand recent trends in land carbon sinks.
关键词	CO2 TRANSITIONS SATELLITE DATABASE DROUGHT FLUXES
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000446089100011
来源期刊	NATURE GEOSCIENCE
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/259383
推荐引用方式 GB/T 7714	Piao, Shilong,Huang, Mengtian,Liu, Zhuo,et al. Lower land-use emissions responsible for increased net land carbon sink during the slow warming period[J]. 中国科学院青藏高原研究所,2018,11(10).
APA	Piao, Shilong.,Huang, Mengtian.,Liu, Zhuo.,Wang, Xuhui.,Ciais, Philippe.,...&Wang, Tao.(2018).Lower land-use emissions responsible for increased net land carbon sink during the slow warming period.NATURE GEOSCIENCE,11(10).
MLA	Piao, Shilong,et al."Lower land-use emissions responsible for increased net land carbon sink during the slow warming period".NATURE GEOSCIENCE 11.10(2018).