Non-uniform seasonal warming regulates vegetation greening and atmospheric CO2 amplification over northern lands

doi:10.1088/1748-9326/aae9ad

	Non-uniform seasonal warming regulates vegetation greening and atmospheric CO2 amplification over northern lands
	Li, Zhao 1,2,3; Xia, Jianyang 1,2,3; Ahlstrom, Anders 4,5; Rinke, Annette 6,7; Koven, Charles 8; Hayes, Daniel J.9; Ji, Duoying 6; Zhang, Geli 10; Krinner, Gerhard 11; Chen, Guangsheng 9
刊名	ENVIRONMENTAL RESEARCH LETTERS
	2018-12-01
卷号	13 期号:12 页码:10
关键词	slowed down asymmetric response non-uniform seasonal warming atmospheric CO2 amplitude
ISSN号	1748-9326
DOI	10.1088/1748-9326/aae9ad
通讯作者	Xia, Jianyang(jyxia@des.ecnu.edu.cn)
英文摘要	The enhanced vegetation growth by climate warming plays a pivotal role in amplifying the seasonal cycle of atmospheric CO2 at northern lands (>50 degrees N) since 1960s. However, the correlation between vegetation growth, temperature and seasonal amplitude of atmospheric CO2 concentration have become elusive with the slowed increasing trend of vegetation growth and weakened temperature control on CO2 uptake since late 1990s. Here, based on in situ atmospheric CO2 concentration records from the Barrow observatory site, we found a slow down in the increasing trend of the atmospheric CO2 amplitude from 1990s to mid 2000s. This phenomenon was associated with the paused decrease in the minimum CO2 concentration ([CO2](min)), which was significantly correlated with the slow down of vegetation greening and growing season length extension. We then showed that both the vegetation greenness and growing-season length were positively correlated with spring but not autumn temperature over the northern lands. Furthermore, such asymmetric dependences of vegetation growth upon spring and autumn temperature cannot be captured by the state-of-art terrestrial biosphere models. These findings indicate that the responses of vegetation growth to spring and autumn warming are asymmetric, and highlight the need of improving autumn phenology in the models for predicting seasonal cycle of atmospheric CO2 concentration.
资助项目	National Key R&D Program of China[2017YFA0604600] ; National Natural Science Foundation[31722009] ; National 1000 Young Talents Program of China ; National Science Foundation (NSF)[DEB 0743778] ; National Science Foundation (NSF)[DEB 0840964] ; National Science Foundation (NSF)[EPS 0919466] ; National Science Foundation (NSF)[EF 1137293] ; National Science Foundation (NSF)[IIA-1301789] ; NASA[NNX11AJ35G] ; USDA grant[2012-02355] ; National Science Foundation ; US Geological Survey ; Terrestrial Ecosystem Sciences grant of the US Department of Energy[DE SC0008270]
WOS关键词	SPRING PHENOLOGY ; CARBON-DIOXIDE ; CYCLE ; TEMPERATURE ; CLIMATE ; MODEL ; ECOSYSTEMS ; EXCHANGE ; TRENDS ; PRODUCTIVITY
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000451432200002
资助机构	National Key R&D Program of China ; National Natural Science Foundation ; National 1000 Young Talents Program of China ; National Science Foundation (NSF) ; NASA ; USDA grant ; National Science Foundation ; US Geological Survey ; Terrestrial Ecosystem Sciences grant of the US Department of Energy
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/51548]
专题	中国科学院地理科学与资源研究所
通讯作者	Xia, Jianyang
作者单位	1.East China Normal Univ, Sch Ecol & Environm Sci, Tiantong Natl Stn Forest Ecosyst, Shanghai 200241, Peoples R China 2.East China Normal Univ, Sch Ecol & Environm Sci, Res Ctr Global Change & Ecol Forecasting, Shanghai 200241, Peoples R China 3.IEC, 3663 N Zhongshan Rd, Shanghai 200062, Peoples R China 4.Lund Univ, Dept Phys Geog & Ecosyst Sci, SE-22362 Lund, Sweden 5.Stanford Univ, Sch Earth Energy & Environm Sci, Dept Earth Syst Sci, 473 Via Ortega, Stanford, CA 94305 USA 6.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, Beijing, Peoples R China 7.Alfred Wegener Inst, Helmholtz Ctr Polar & Marine Res, Potsdam, Germany 8.Lawrence Berkeley Natl Lab, Berkeley, CA USA 9.Univ Maine, Sch Forest Resources, Orono, ME 04469 USA 10.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhao,Xia, Jianyang,Ahlstrom, Anders,et al. Non-uniform seasonal warming regulates vegetation greening and atmospheric CO2 amplification over northern lands[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(12):10.
APA	Li, Zhao.,Xia, Jianyang.,Ahlstrom, Anders.,Rinke, Annette.,Koven, Charles.,...&Luo, Yiqi.(2018).Non-uniform seasonal warming regulates vegetation greening and atmospheric CO2 amplification over northern lands.ENVIRONMENTAL RESEARCH LETTERS,13(12),10.
MLA	Li, Zhao,et al."Non-uniform seasonal warming regulates vegetation greening and atmospheric CO2 amplification over northern lands".ENVIRONMENTAL RESEARCH LETTERS 13.12(2018):10.