气候变化领域集成服务门户(CCPortal): Emerging negative impact of warming on summer carbon uptake in northern ecosystems

CCPortal

DOI	10.1038/s41467-018-07813-7
	Emerging negative impact of warming on summer carbon uptake in northern ecosystems
	Wang, Tao; Liu, Dan; Piao, Shilong; Wang, Yilong; Wang, Xiaoyi; Guo, Hui; Lian, Xu; Burkhart, John F.; Ciais, Philippe; Huang, Mengtian; Janssens, Ivan; Li, Yue; Liu, Yongwen; Penuelas, Josep; Peng, Shushi; Yang, Hui; Yao, Yitong; Yin, Yi; Zhao, Yutong
通讯作者	Wang, T (通讯作者)
发表日期	2018
ISSN	2041-1723
卷号	9
英文摘要	Most studies of the northern hemisphere carbon cycle based on atmospheric CO2 concentration have focused on spring and autumn, but the climate change impact on summer carbon cycle remains unclear. Here we used atmospheric CO2 record from Point Barrow (Alaska) to show that summer CO2 drawdown between July and August, a proxy of summer carbon uptake, is significantly negatively correlated with terrestrial temperature north of 50 degrees N interannually during 1979-2012. However, a refined analysis at the decadal scale reveals strong differences between the earlier (1979-1995) and later (1996-2012) periods, with the significant negative correlation only in the later period. This emerging negative temperature response is due to the disappearance of the positive temperature response of summer vegetation activities that prevailed in the earlier period. Our finding, together with the reported weakening temperature control on spring carbon uptake, suggests a diminished positive effect of warming on high-latitude carbon uptake.
关键词	ARCTIC TUNDRA CO2 EXCHANGE ATMOSPHERIC CO2 SEASONAL CYCLE CLIMATE-CHANGE SOIL SATELLITE DIOXIDE SENSITIVITY INCREASES
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000453754200014
来源期刊	NATURE COMMUNICATIONS
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/259379
推荐引用方式 GB/T 7714	Wang, Tao,Liu, Dan,Piao, Shilong,et al. Emerging negative impact of warming on summer carbon uptake in northern ecosystems[J]. 中国科学院青藏高原研究所,2018,9.
APA	Wang, Tao.,Liu, Dan.,Piao, Shilong.,Wang, Yilong.,Wang, Xiaoyi.,...&Zhao, Yutong.(2018).Emerging negative impact of warming on summer carbon uptake in northern ecosystems.NATURE COMMUNICATIONS,9.
MLA	Wang, Tao,et al."Emerging negative impact of warming on summer carbon uptake in northern ecosystems".NATURE COMMUNICATIONS 9(2018).