Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14744 |
Negative feedback processes following drainage slow down permafrost degradation | |
Goeckede, Mathias1; Kwon, Min Jung1,2; Kittler, Fanny1; Heimann, Martin1,3; Zimov, Nikita4; Zimov, Sergey4,5 | |
2019-07-24 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:10页码:3254-3266 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; South Korea; Finland; Russia |
英文摘要 | The sustainability of the vast Arctic permafrost carbon pool under climate change is of paramount importance for global climate trajectories. Accurate climate change forecasts, therefore, depend on a reliable representation of mechanisms governing Arctic carbon cycle processes, but this task is complicated by the complex interaction of multiple controls on Arctic ecosystem changes, linked through both positive and negative feedbacks. As a primary example, predicted Arctic warming can be substantially influenced by shifts in hydrologic regimes, linked to, for example, altered precipitation patterns or changes in topography following permafrost degradation. This study presents observational evidence how severe drainage, a scenario that may affect large Arctic areas with ice-rich permafrost soils under future climate change, affects biogeochemical and biogeophysical processes within an Arctic floodplain. Our in situ data demonstrate reduced carbon losses and transfer of sensible heat to the atmosphere, and effects linked to drainage-induced long-term shifts in vegetation communities and soil thermal regimes largely counterbalanced the immediate drainage impact. Moreover, higher surface albedo in combination with low thermal conductivity cooled the permafrost soils. Accordingly, long-term drainage effects linked to warming-induced permafrost degradation hold the potential to alleviate positive feedbacks between permafrost carbon and Arctic warming, and to slow down permafrost degradation. Self-stabilizing effects associated with ecosystem disturbance such as these drainage impacts are a key factor for predicting future feedbacks between Arctic permafrost and climate change, and, thus, neglect of these mechanisms will exaggerate the impacts of Arctic change on future global climate projections. |
英文关键词 | Arctic climate change drainage disturbance energy redistribution long-term effects permafrost carbon |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477362300001 |
WOS关键词 | REDUCES CO2 UPTAKE ; ARCTIC TUNDRA ; CARBON-DIOXIDE ; FLUX MEASUREMENTS ; WATER-BALANCE ; SOIL ; EXCHANGE ; PRECIPITATION ; VULNERABILITY ; TEMPERATURE |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/185198 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Max Planck Inst Biogeochem, Hans Knoll Str 10, D-07745 Jena, Germany; 2.Korea Polar Res Inst, Incheon, South Korea; 3.Univ Helsinki, Inst Atmospher & Earth Syst Res INAR Phys, Helsinki, Finland; 4.Russian Acad Sci, Pacific Inst Geog, Far East Branch, North East Sci Stn, Cherskii, Russia; 5.Far Eastern Fed Univ, Vladivostok, Russia |
推荐引用方式 GB/T 7714 | Goeckede, Mathias,Kwon, Min Jung,Kittler, Fanny,et al. Negative feedback processes following drainage slow down permafrost degradation[J]. GLOBAL CHANGE BIOLOGY,2019,25(10):3254-3266. |
APA | Goeckede, Mathias,Kwon, Min Jung,Kittler, Fanny,Heimann, Martin,Zimov, Nikita,&Zimov, Sergey.(2019).Negative feedback processes following drainage slow down permafrost degradation.GLOBAL CHANGE BIOLOGY,25(10),3254-3266. |
MLA | Goeckede, Mathias,et al."Negative feedback processes following drainage slow down permafrost degradation".GLOBAL CHANGE BIOLOGY 25.10(2019):3254-3266. |
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