气候变化领域集成服务门户(CCPortal): Changes in net ecosystem exchange of CO2 in Arctic and their relationships with climate change during 2002-2017

CCPortal

DOI	10.1016/j.accre.2021.06.004
	Changes in net ecosystem exchange of CO2 in Arctic and their relationships with climate change during 2002-2017
	Li Zhi-Long; Mu Cui-Cui; Chen Xu; Wang Xing-Yu; Dong Wen-Wen; Jia Lin; Mu Mei; Streletskaya, Irina; Grebenets, Valery; Sokratov, Sergey; Kizyakov, Alexander; Wu Xiao-Dong
通讯作者	Mu, CC (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	1674-9278
起始页码	475
结束页码	481
卷号	12 期号:4
英文摘要	Arctic warming leads to permafrost degradation, which can increase ecosystem respiration and release more greenhouse gas into the atmosphere. Meanwhile, climate warming also promotes the plant growth and increases carbon assimilation. Presently, it is largely unknown about the carbon budget and their responses to climate change in the Arctic regions. In this study, to investigate the seasonal and annual net ecosystem carbon exchange (NEE), we collected 71 observation stations for net ecosystem exchange (NEE) of CO2 in the high latitude permafrost regions during 2002-2017. The results showed that the annual NEE was -8.2 +/- 4.1 g CO2 m(-2) d(-1) for forest, -3.3 +/- 2.6 g CO2 m(-2) d(-1) for shrub, -4.8 +/- 4.1 g CO2 m(-2) d(-1) for grassland, -3.6 +/- 3.0 g CO2 m(-2) d(-1) for wetland and 0.02 +/- 0.62 g CO2 m(-2) d(-1) for tundra, respectively. From 2002 to 2017, the CO2 emissions of grassland (carbon source) showed a decreasing trend, and the CO2 assimilation of shrub and forest (carbon sink) has been increased. The wetland and tundra are shifting from carbon sources to sinks. There were great variations in temperature sensitivities (Q(10)) of NEE in different seasons, with larger values in winter and lower values in summer. These findings indicate that the Arctic terrestrial ecosystem presently acts as a carbon sink, while there is a possibility that future warming, especially the warming in winter, may decrease the carbon sink of the Arctic terrestrial ecosystem.
关键词	EDDY COVARIANCE TECHNIQUE BLACK SPRUCE FOREST SOIL RESPIRATION CARBON EXCHANGE TEMPERATURE-DEPENDENCE SEASONAL-VARIATION TUNDRA ECOSYSTEMS PERMAFROST CARBON POLYGONAL TUNDRA FLUX
英文关键词	Arctic; Climate change; Permafrost; Carbon flux; Ecosystem; Eddy covariance
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000694050200005
来源期刊	ADVANCES IN CLIMATE CHANGE RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254670
作者单位	[Li Zhi-Long; Mu Cui-Cui; Chen Xu; Wang Xing-Yu; Dong Wen-Wen; Jia Lin; Mu Mei] Lanzhou Univ, Coll Earth & Environm Sci, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Mu Cui-Cui] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China; [Mu Cui-Cui] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, State Key Lab Cryospher Sci, Cryosphere Res Stn Qinghai Tibetan Plateau, Lanzhou 730000, Peoples R China; [Mu Cui-Cui] Univ Cooperat Polar Res, Beijing 100875, Peoples R China; [Streletskaya, Irina; Grebenets, Valery; Sokratov, Sergey; Kizyakov, Alexander; Wu Xiao-Dong] Lomonosov Moscow State Univ, Geog Fac, Moscow 119991, Russia
推荐引用方式 GB/T 7714	Li Zhi-Long,Mu Cui-Cui,Chen Xu,et al. Changes in net ecosystem exchange of CO2 in Arctic and their relationships with climate change during 2002-2017[J]. 中国科学院西北生态环境资源研究院,2021,12(4).
APA	Li Zhi-Long.,Mu Cui-Cui.,Chen Xu.,Wang Xing-Yu.,Dong Wen-Wen.,...&Wu Xiao-Dong.(2021).Changes in net ecosystem exchange of CO2 in Arctic and their relationships with climate change during 2002-2017.ADVANCES IN CLIMATE CHANGE RESEARCH,12(4).
MLA	Li Zhi-Long,et al."Changes in net ecosystem exchange of CO2 in Arctic and their relationships with climate change during 2002-2017".ADVANCES IN CLIMATE CHANGE RESEARCH 12.4(2021).