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DOI | 10.1038/s41558-020-0734-z |
Reduced net methane emissions due to microbial methane oxidation in a warmer Arctic | |
Oh, Youmi1; 39;Imperio, Ludovica2 | |
2020-03-30 | |
发表期刊 | NATURE CLIMATE CHANGE |
ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2020 |
卷号 | 10期号:4页码:317-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Sweden; Denmark; Peoples R China |
英文摘要 | Methane emissions from organic-rich soils in the Arctic have been extensively studied due to their potential to increase the atmospheric methane burden as permafrost thaws(1-3). However, this methane source might have been overestimated without considering high-affinity methanotrophs (HAMs; methane-oxidizing bacteria) recently identified in Arctic mineral soils(4-7). Herein we find that integrating the dynamics of HAMs and methanogens into a biogeochemistry model(8-10) that includes permafrost soil organic carbon dynamics(3) leads to the upland methane sink doubling (similar to 5.5 Tg CH4 yr(-1)) north of 50 degrees N in simulations from 2000-2016. The increase is equivalent to at least half of the difference in net methane emissions estimated between process-based models and observation-based inversions(11,12), and the revised estimates better match site-level and regional observations(5,7,13-15). The new model projects doubled wetland methane emissions between 2017-2100 due to more accessible permafrost carbon(16-18). However, most of the increase in wetland emissions is offset by a concordant increase in the upland sink, leading to only an 18% increase in net methane emission (from 29 to 35 Tg CH4 yr(-1)). The projected net methane emissions may decrease further due to different physiological responses between HAMs and methanogens in response to increasing temperature(19,20). |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000522381600001 |
WOS关键词 | PERMAFROST CARBON ; ASSIMILATION SYSTEM ; NATURAL WETLANDS ; CLIMATE-CHANGE ; CH4 OXIDATION ; FLUXES ; MODEL ; LANDSCAPE ; CONSUMPTION ; EXCHANGE |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249396 |
专题 | 资源环境科学 |
作者单位 | 1.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; 2.Purdue Climate Change Res Ctr, W Lafayette, IN 47907 USA; 3.Purdue Univ, Dept Agron, W Lafayette, IN 47907 USA; 4.Princeton Univ, Dept Geosci, Princeton, NJ 08544 USA; 5.Univ Notre Dame, Dept Biol Sci, Notre Dame, IN 46556 USA; 6.NOAA, Earth Syst Res Lab, Global Monitoring Div, Boulder, CO USA; 7.Stockholm Univ, Dept Phys Geog, Stockholm, Sweden; 8.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 9.Univ Copenhagen, Ctr Permafrost CENPERM, Copenhagen, Denmark; 10.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Lab Extraterr Ocean Syst, Sanya, Peoples R China |
推荐引用方式 GB/T 7714 | Oh, Youmi,39;Imperio, Ludovica. Reduced net methane emissions due to microbial methane oxidation in a warmer Arctic[J]. NATURE CLIMATE CHANGE,2020,10(4):317-+. |
APA | Oh, Youmi,&39;Imperio, Ludovica.(2020).Reduced net methane emissions due to microbial methane oxidation in a warmer Arctic.NATURE CLIMATE CHANGE,10(4),317-+. |
MLA | Oh, Youmi,et al."Reduced net methane emissions due to microbial methane oxidation in a warmer Arctic".NATURE CLIMATE CHANGE 10.4(2020):317-+. |
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