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DOI	10.1038/s41561-021-00715-2
	Half of global methane emissions come from highly variable aquatic ecosystem sources
	Rosentreter J.A.; Borges A.V.; Deemer B.R.; Holgerson M.A.; Liu S.; Song C.; Melack J.; Raymond P.A.; Duarte C.M.; Allen G.H.; Olefeldt D.; Poulter B.; Battin T.I.; Eyre B.D.
发表日期	2021
ISSN	17520894
起始页码	225
结束页码	230
卷号	14 期号:4
英文摘要	Atmospheric methane is a potent greenhouse gas that plays a major role in controlling the Earth’s climate. The causes of the renewed increase of methane concentration since 2007 are uncertain given the multiple sources and complex biogeochemistry. Here, we present a metadata analysis of methane fluxes from all major natural, impacted and human-made aquatic ecosystems. Our revised bottom-up global aquatic methane emissions combine diffusive, ebullitive and/or plant-mediated fluxes from 15 aquatic ecosystems. We emphasize the high variability of methane fluxes within and between aquatic ecosystems and a positively skewed distribution of empirical data, making global estimates sensitive to statistical assumptions and sampling design. We find aquatic ecosystems contribute (median) 41% or (mean) 53% of total global methane emissions from anthropogenic and natural sources. We show that methane emissions increase from natural to impacted aquatic ecosystems and from coastal to freshwater ecosystems. We argue that aquatic emissions will probably increase due to urbanization, eutrophication and positive climate feedbacks and suggest changes in land-use management as potential mitigation strategies to reduce aquatic methane emissions. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
英文关键词	aquatic ecosystem; biogeochemistry; concentration (composition); emission; eutrophication; flux measurement; global change; greenhouse gas; methane; mitigation; strategic approach; urbanization
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206954
作者单位	Centre for Coastal Biogeochemistry, Faculty of Science and Engineering, Southern Cross University, Lismore, NSW, Australia; Yale School of the Environment, Yale University, New Haven, CT, United States; University of Liège, Chemical Oceanography Unit, Liège, Belgium; US Geological Survey, Southwest Biological Science Center, Flagstaff, AZ, United States; Department of Biology, St. Olaf College, Northfield, MN, United States; Department of Environmental Studies, St. Olaf College, Northfield, MN, United States; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States; School of Environment, Beijing Normal University, Haidian, Beijing, China; Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China; State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu, China; Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, ...
推荐引用方式 GB/T 7714	Rosentreter J.A.,Borges A.V.,Deemer B.R.,et al. Half of global methane emissions come from highly variable aquatic ecosystem sources[J],2021,14(4).
APA	Rosentreter J.A..,Borges A.V..,Deemer B.R..,Holgerson M.A..,Liu S..,...&Eyre B.D..(2021).Half of global methane emissions come from highly variable aquatic ecosystem sources.Nature Geoscience,14(4).
MLA	Rosentreter J.A.,et al."Half of global methane emissions come from highly variable aquatic ecosystem sources".Nature Geoscience 14.4(2021).