Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41558-018-0095-z |
Methane production as key to the greenhouse gas budget of thawing permafrost | |
Knoblauch, Christian1,2; Beer, Christian3,4; Liebner, Susanne5,6; Grigoriev, Mikhail N.7; Pfeiffer, Eva-Maria1,2 | |
2018-04-01 | |
发表期刊 | NATURE CLIMATE CHANGE |
ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2018 |
卷号 | 8期号:4页码:309-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Sweden; Russia |
英文摘要 | Permafrost thaw liberates frozen organic carbon, which is decomposed into carbon dioxide (CO2) and methane (CH4). The release of these greenhouse gases (GHGs) forms a positive feedback to atmospheric CO2 and CH4 concentrations and accelerates climate change(1,2). Current studies report a minor importance of CH4 production in water-saturated (anoxic) permafrost soils(3-6) and a stronger permafrost carbon-climate feedback from drained (oxic) soils(1,7). Here we show through seven-year laboratory incubations that equal amounts of CO2 and CH4 are formed in thawing permafrost under anoxic conditions after stable CH4-producing microbial communities have established. Less permafrost carbon was mineralized under anoxic conditions but more CO2-carbon equivalents (CO2Ce) were formed than under oxic conditions when the higher global warming potential (GWP) of CH4 is taken into account(8). A model of organic carbon decomposition, calibrated with the observed decomposition data, predicts a higher loss of permafrost carbon under oxic conditions (113 +/- 58 g CO2-C kgC(-1) (kgC, kilograms of carbon)) by 2100, but a twice as high production of CO2-Ce (241 +/- 138 g CO2-Ce kgC(-1)) under anoxic conditions. These findings challenge the view of a stronger permafrost carbon-climate feedback from drained soils1,7 and emphasize the importance of CH4 production in thawing permafrost on climate-relevant timescales. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000429194600017 |
WOS关键词 | POLYGONAL TUNDRA ; CARBON-DIOXIDE ; SOIL CARBON ; EMISSION ; CLIMATE ; VEGETATION ; HYDROLOGY ; OXIDATION ; RELEASE ; DELTA |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/33344 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Hamburg, Inst Soil Sci, Hamburg, Germany; 2.Univ Hamburg, Ctr Earth Syst Res & Sustainabil, Hamburg, Germany; 3.Stockholm Univ, Dept Environm Sci & Analyt Chem, Stockholm, Sweden; 4.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 5.GFZ German Res Ctr Geosci, Sect Geomicrobiol, Potsdam, Germany; 6.Univ Potsdam, Inst Biochem & Biol, Potsdam, Germany; 7.Russian Acad Sci, Melnikov Permafrost Inst, Siberian Branch, Yakutsk, Russia |
推荐引用方式 GB/T 7714 | Knoblauch, Christian,Beer, Christian,Liebner, Susanne,et al. Methane production as key to the greenhouse gas budget of thawing permafrost[J]. NATURE CLIMATE CHANGE,2018,8(4):309-+. |
APA | Knoblauch, Christian,Beer, Christian,Liebner, Susanne,Grigoriev, Mikhail N.,&Pfeiffer, Eva-Maria.(2018).Methane production as key to the greenhouse gas budget of thawing permafrost.NATURE CLIMATE CHANGE,8(4),309-+. |
MLA | Knoblauch, Christian,et al."Methane production as key to the greenhouse gas budget of thawing permafrost".NATURE CLIMATE CHANGE 8.4(2018):309-+. |
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