Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/aaa4fe |
Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands | |
Ala-aho, P.1; Soulsby, C.1; Pokrovsky, O. S.2; Kirpotin, S. N.4; Karlsson, J.5; Serikova, S.5; Manasypov, R.3,4; Lim, A.4; Krickov, I.4; Kolesnichenko, L. G.4; Laudon, H.6; Tetzlaff, D.1 | |
2018-03-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2018 |
卷号 | 13期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Scotland; France; Russia; Sweden |
英文摘要 | The Western Siberian Lowlands (WSL) store large quantities of organic carbon that will be exposed and mobilized by the thawing of permafrost. The fate of mobilized carbon, however, is not well understood, partly because of inadequate knowledge of hydrological controls in the region which has a vast low-relief surface area, extensive lake and wetland coverage and gradually increasing permafrost influence. We used stable water isotopes to improve our understanding of dominant landscape controls on the hydrology of the WSL. We sampled rivers along a 1700 km South-North transect from permafrost-free to continuous permafrost repeatedly over three years, and derived isotope proxies for catchment hydrological responsiveness and connectivity. We found correlations between the isotope proxies and catchment characteristics, suggesting that lakes and wetlands are intimately connected to rivers, and that permafrost increases the responsiveness of the catchment to rainfall and snowmelt events, reducing catchment mean transit times. Our work provides rare isotope-based field evidence that permafrost and lakes/wetlands influence hydrological pathways across a wide range of spatial scales (10-10(5) km(2)) and permafrost coverage (0%-70%). This has important implications, because both permafrost extent and lake/wetland coverage are affected by permafrost thaw in the changing climate. Changes in these hydrological landscape controls are likely to alter carbon export and emission via inland waters, which may be of global significance. |
英文关键词 | stable water isotopes Western Siberia Lowlands mean transit time hydrological connectivity permafrost |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426518100004 |
WOS关键词 | DISCONTINUOUS PERMAFROST ; RUNOFF GENERATION ; STABLE-ISOTOPES ; LANDSCAPE CHARACTERISTICS ; SEASONAL VARIABILITY ; MESOSCALE CATCHMENT ; TIME DISTRIBUTIONS ; STORAGE DYNAMICS ; RESIDENCE TIMES ; NORTHERN PART |
WOS类目 | Environmental Sciences ; 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/31048 |
专题 | 气候变化 |
作者单位 | 1.Univ Aberdeen, Northern Rivers Inst, Sch Geosci, Aberdeen, Scotland; 2.Univ Toulouse, GET UMR CNRS 5563, Toulouse, France; 3.Russian Acad Sci, N Laverov Fed Ctr Integrated Arctic Res, Arkhangelsk, Russia; 4.Tomsk State Univ, BIO GEO CLIM Lab, Tomsk, Russia; 5.Umea Univ, Dept Ecol & Environm Sci, Umea, Sweden; 6.Swedish Univ Agr Sci, Dept Forest Ecol & Management, Umea, Sweden |
推荐引用方式 GB/T 7714 | Ala-aho, P.,Soulsby, C.,Pokrovsky, O. S.,et al. Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands[J]. ENVIRONMENTAL RESEARCH LETTERS,2018,13(3). |
APA | Ala-aho, P..,Soulsby, C..,Pokrovsky, O. S..,Kirpotin, S. N..,Karlsson, J..,...&Tetzlaff, D..(2018).Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands.ENVIRONMENTAL RESEARCH LETTERS,13(3). |
MLA | Ala-aho, P.,et al."Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands".ENVIRONMENTAL RESEARCH LETTERS 13.3(2018). |
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