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DOI | 10.1038/s41561-019-0526-0 |
Carbon release through abrupt permafrost thaw | |
Turetsky, Merritt R.1,2; Abbott, Benjamin W.3; Jones, Miriam C.4; Anthony, Katey Walter5; Olefeldt, David6; Schuur, Edward A. G.7,8; Grosse, Guido9,10; Kuhry, Peter11,12; Hugelius, Gustaf11,12; Koven, Charles13; Lawrence, David M.14; Gibson, Carolyn1; Sannel, A. Britta K.11,12; McGuire, A. David15 | |
2020-02-03 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
卷号 | 13期号:2页码:138-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; USA; Germany; Sweden |
英文摘要 | The permafrost zone is expected to be a substantial carbon source to the atmosphere, yet large-scale models currently only simulate gradual changes in seasonally thawed soil. Abrupt thaw will probably occur in <20% of the permafrost zone but could affect half of permafrost carbon through collapsing ground, rapid erosion and landslides. Here, we synthesize the best available information and develop inventory models to simulate abrupt thaw impacts on permafrost carbon balance. Emissions across 2.5 million km(2) of abrupt thaw could provide a similar climate feedback as gradual thaw emissions from the entire 18 million km(2) permafrost region under the warming projection of Representative Concentration Pathway 8.5. While models forecast that gradual thaw may lead to net ecosystem carbon uptake under projections of Representative Concentration Pathway 4.5, abrupt thaw emissions are likely to offset this potential carbon sink. Active hillslope erosional features will occupy 3% of abrupt thaw terrain by 2300 but emit one-third of abrupt thaw carbon losses. Thaw lakes and wetlands are methane hot spots but their carbon release is partially offset by slowly regrowing vegetation. After considering abrupt thaw stabilization, lake drainage and soil carbon uptake by vegetation regrowth, we conclude that models considering only gradual permafrost thaw are substantially underestimating carbon emissions from thawing permafrost. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000519214500010 |
WOS关键词 | METHANE EMISSIONS ; CLIMATE-CHANGE ; VULNERABILITY ; LAKES ; CO2 |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/249367 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Guelph, Dept Integrat Biol, Guelph, ON, Canada; 2.Univ Colorado, Inst Arctic & Alpine Res INSTAAR, Boulder, CO 80309 USA; 3.Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA; 4.US Geol Survey, 959 Natl Ctr, Reston, VA 22092 USA; 5.Univ Alaska, Water & Environm Res Ctr, Fairbanks, AK 99701 USA; 6.Univ Alberta, Dept Renewable Resources, Edmonton, AB, Canada; 7.No Arizona Univ, Ctr Ecosyst Sci & Soc, Flagstaff, AZ USA; 8.No Arizona Univ, Dept Biol Sci, Flagstaff, AZ USA; 9.Helmholtz Ctr Polar & Marine Res, Alfred Wegener Inst, Potsdam, Germany; 10.Univ Potsdam, Inst Geosci, Potsdam, Germany; 11.Stockholm Univ, Dept Phys Geog, Stockholm, Sweden; 12.Stockholm Univ, Bolin Ctr Climate Res, Stockholm, Sweden; 13.Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA USA; 14.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 15.Univ Alaska, Inst Arctic Biol, Fairbanks, AK 99775 USA |
推荐引用方式 GB/T 7714 | Turetsky, Merritt R.,Abbott, Benjamin W.,Jones, Miriam C.,et al. Carbon release through abrupt permafrost thaw[J]. NATURE GEOSCIENCE,2020,13(2):138-+. |
APA | Turetsky, Merritt R..,Abbott, Benjamin W..,Jones, Miriam C..,Anthony, Katey Walter.,Olefeldt, David.,...&McGuire, A. David.(2020).Carbon release through abrupt permafrost thaw.NATURE GEOSCIENCE,13(2),138-+. |
MLA | Turetsky, Merritt R.,et al."Carbon release through abrupt permafrost thaw".NATURE GEOSCIENCE 13.2(2020):138-+. |
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