气候变化领域集成服务门户(CCPortal): Boreal-Arctic wetland methane emissions modulated by warming and vegetation activity

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DOI	10.1038/s41558-024-01933-3
	Boreal-Arctic wetland methane emissions modulated by warming and vegetation activity
	Yuan, Kunxiaojia; Li, Fa; McNicol, Gavin; Chen, Min; Hoyt, Alison; Knox, Sara; Riley, William J.; Jackson, Robert; Zhu, Qing
发表日期	2024
ISSN	1758-678X
EISSN	1758-6798
英文摘要	Wetland methane (CH4) emissions over the Boreal-Arctic region are vulnerable to climate change and linked to climate feedbacks, yet understanding of their long-term dynamics remains uncertain. Here, we upscaled and analysed two decades (2002-2021) of Boreal-Arctic wetland CH4 emissions, representing an unprecedented compilation of eddy covariance and chamber observations. We found a robust increasing trend of CH4 emissions (+8.9%) with strong inter-annual variability. The majority of emission increases occurred in early summer (June and July) and were mainly driven by warming (52.3%) and ecosystem productivity (40.7%). Moreover, a 2 degrees C temperature anomaly in 2016 led to the highest recorded annual CH4 emissions (22.3 Tg CH4 yr-1) over this region, driven primarily by high emissions over Western Siberian lowlands. However, current-generation models from the Global Carbon Project failed to capture the emission magnitude and trend, and may bias the estimates in future wetland CH4 emission driven by amplified Boreal-Arctic warming and greening. Whether methane emissions from the Boreal-Arctic region are increasing under climate change is unclear, but critical for determining climate feedbacks. This study uses observations and machine learning to show an increase in wetland methane emissions over the past two decades, with inter-annual variation.
英文关键词	EL-NINO; DATASET; TEMPERATURE; CLIMATE; MODEL; AREA; METHANOGENESIS; DYNAMICS; NORTHERN; SYSTEM
WOS研究方向	Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001162170300001
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282397
作者单位	United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; University of Wisconsin System; University of Wisconsin Madison; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; Stanford University; University of British Columbia; McGill University
推荐引用方式 GB/T 7714	Yuan, Kunxiaojia,Li, Fa,McNicol, Gavin,et al. Boreal-Arctic wetland methane emissions modulated by warming and vegetation activity[J],2024.
APA	Yuan, Kunxiaojia.,Li, Fa.,McNicol, Gavin.,Chen, Min.,Hoyt, Alison.,...&Zhu, Qing.(2024).Boreal-Arctic wetland methane emissions modulated by warming and vegetation activity.Nature Climate Change.
MLA	Yuan, Kunxiaojia,et al."Boreal-Arctic wetland methane emissions modulated by warming and vegetation activity".Nature Climate Change (2024).