Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073823 |
Large uncertainty in permafrost carbon stocks due to hillslope soil deposits | |
Shelef, Eitan1,2; Rowland, Joel C.3; Wilson, Cathy J.3; Hilley, G. E.4; Mishra, Umakant5; Altmann, Garrett L.3; Ping, Chien-Lu6 | |
2017-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Northern circumpolar permafrost soils contain more than a third of the global soil organic carbon pool (SOC). The sensitivity of this carbon pool to a changing climate is a primary source of uncertainty in simulation-based climate projections. These projections, however, do not account for the accumulation of soil deposits at the base of hillslopes (hill toes) and the influence of this accumulation on the distribution, sequestration, and decomposition of SOC in landscapes affected by permafrost. Here we combine topographic models with soil profile data and topographic analysis to evaluate the quantity and uncertainty of SOC mass stored in perennially frozen hill toe soil deposits. We show that in Alaska this SOC mass introduces an uncertainty that is > 200% the state-wide estimates of SOC stocks (77 Pg C) and that a similarly large uncertainty may also pertain at a circumpolar scale. Soil sampling and geophysical imaging efforts that target hill toe deposits can help constrain this large uncertainty. |
英文关键词 | hillslope soil-Carbon permafrost soil-transport |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405854200031 |
WOS关键词 | EARTH SYSTEM MODELS ; ORGANIC-CARBON ; CLIMATE-CHANGE ; DISCONTINUOUS PERMAFROST ; CENTRAL ALASKA ; EROSION ; SLOPES ; VULNERABILITY ; VARIABILITY ; VEGETATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26593 |
专题 | 气候变化 |
作者单位 | 1.Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM 87545 USA; 2.Univ Pittsburgh, Dept Geol & Environm Sci, Pittsburgh, PA 15260 USA; 3.Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM USA; 4.Stanford Univ, Dept Geol & Environm Sci, Stanford, CA 94305 USA; 5.Argonne Natl Lab, Div Environm Sci, Lemont, IL USA; 6.Univ Alaska Fairbanks, SNRE Agr & Forestry Expt Stn, Fairbanks, AK USA |
推荐引用方式 GB/T 7714 | Shelef, Eitan,Rowland, Joel C.,Wilson, Cathy J.,et al. Large uncertainty in permafrost carbon stocks due to hillslope soil deposits[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12). |
APA | Shelef, Eitan.,Rowland, Joel C..,Wilson, Cathy J..,Hilley, G. E..,Mishra, Umakant.,...&Ping, Chien-Lu.(2017).Large uncertainty in permafrost carbon stocks due to hillslope soil deposits.GEOPHYSICAL RESEARCH LETTERS,44(12). |
MLA | Shelef, Eitan,et al."Large uncertainty in permafrost carbon stocks due to hillslope soil deposits".GEOPHYSICAL RESEARCH LETTERS 44.12(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论