Decelerating Autumn CO2 Release With Warming Induced by Attenuated Temperature Dependence of Respiration in Northern Ecosystems

doi:10.1029/2018GL077447

	Decelerating Autumn CO2 Release With Warming Induced by Attenuated Temperature Dependence of Respiration in Northern Ecosystems
	Penuelas, J (Penuelas, Josep)6,7; Ciais, P (Ciais, Philippe)5; Janssens, I (Janssens, Ivan)8; Liu, D (Liu, Dan)1; Piao, SL (Piao, Shilong)1,2,3,4; Wang, T (Wang, Tao)1,2; Wang, XH (Wang, Xuhui)5; Wang, XY (Wang, Xiaoyi)1; Ding, JZ (Ding, Jinzhi)1
刊名	GEOPHYSICAL RESEARCH LETTERS
	2018-06-16
卷号	45 期号:11 页码:5562-5571
关键词	ATMOSPHERIC CARBON-DIOXIDE SOIL RESPIRATION PLANT RESPIRATION CLIMATE-CHANGE MODEL SENSITIVITY CYCLE ACCLIMATION SATELLITE ALASKA
ISSN号	0094-8276
DOI	10.1029/2018GL077447
英文摘要	Feedbacks from the carbon cycle in boreal and arctic ecosystems can significantly affect climate change, but the effects of climate change on the high-latitude carbon cycle during the dormant period remain uncertain. By analyzing the long-term atmospheric CO2 concentration record from Point Barrow in Alaska, we show that warming significantly boosts net CO2 release in autumn over the period 1974-2014. But this warming-stimulated effect has been attenuated since 1997. This deceleration of net CO2 release with warming is ascribed to the attenuation in respiration response to temperature rather than changing relationship between temperature and productivity or changes in atmospheric transport, fossil fuel emissions, or air-sea CO2 exchanges. The attenuated respiration response is likely due to decoupling between temperature and plant-derived carbon inputs to soil for decomposition. Contrary to previous suggestions, warming no longer results in a higher autumn net CO2 release.
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000436249900039
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8624]
专题	青藏高原研究所_图书馆
作者单位	1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China; 2.Chinese Acad Sci, Ctr Excellence Tibetan Earth Sci, Beijing, Peoples R China; 3.Peking Univ, Sinofrench Inst Earth Syst Sci, Coll Urban & Environm Sci, Beijing, Peoples R China; 4.Univ Chinese Acad Sci, Beijing, Peoples R China; 5.Lab Sci Climat & Environm CEA CNRS UVSQ, Gif Sur Yvette, France; 6.CREAF, Cerdanyola Del Valles, Spain; 7.CSIC, Global Ecol Unit CREAF CEAB CSIC UAB, Cerdanyola Del Valles, Spain; 8.Univ Antwerp, Dept Biol, Antwerp, Belgium.
推荐引用方式 GB/T 7714	Penuelas, J ,Ciais, P ,Janssens, I ,et al. Decelerating Autumn CO2 Release With Warming Induced by Attenuated Temperature Dependence of Respiration in Northern Ecosystems[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(11):5562-5571.
APA	Penuelas, J .,Ciais, P .,Janssens, I .,Liu, D .,Piao, SL .,...&Ding, JZ .(2018).Decelerating Autumn CO2 Release With Warming Induced by Attenuated Temperature Dependence of Respiration in Northern Ecosystems.GEOPHYSICAL RESEARCH LETTERS,45(11),5562-5571.
MLA	Penuelas, J ,et al."Decelerating Autumn CO2 Release With Warming Induced by Attenuated Temperature Dependence of Respiration in Northern Ecosystems".GEOPHYSICAL RESEARCH LETTERS 45.11(2018):5562-5571.