Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-020-16311-8 |
Massive peatland carbon banks vulnerable to rising temperatures | |
Hopple, A. M.1,2,3; Wilson, R. M.4; Kolton, M.5,6; Zalman, C. A.2; Chanton, J. P.4; Kostka, J.5,6; Hanson, P. J.7; Keller, J. K.2; Bridgham, S. D.1 | |
2020-05-12 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2020 |
卷号 | 11期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Peatlands contain one-third of the world's soil carbon (C). If destabilized, decomposition of this vast C bank could accelerate climate warming; however, the likelihood of this outcome remains unknown. Here, we examine peatland C stability through five years of whole-ecosystem warming and two years of elevated atmospheric carbon dioxide concentrations (eCO(2)). Warming exponentially increased methane (CH4) emissions and enhanced CH4 production rates throughout the entire soil profile; although surface CH4 production rates remain much greater than those at depth. Additionally, older deeper C sources played a larger role in decomposition following prolonged warming. Most troubling, decreases in CO2:CH4 ratios in gas production, porewater concentrations, and emissions, indicate that the peatland is becoming more methanogenic with warming. We observed limited evidence of eCO(2) effects. Our results suggest that ecosystem responses are largely driven by surface peat, but that the vast C bank at depth in peatlands is responsive to prolonged warming. One-third of Earth's carbon is sequestered in peatlands, and its stability in the face of climate change is unknown. Here the authors show that warming leads to the release of carbon as methane, but only the most prolonged warming leads to the breakdown and release of deep, old carbon. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000537242500014 |
WOS关键词 | ORGANIC-MATTER ; METHANE EMISSIONS ; CLIMATE-CHANGE ; ELEVATED CO2 ; SOIL ; RESPIRATION ; CH4 ; PROJECT |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/249949 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Oregon, Inst Ecol & Evolut, Eugene, OR 97403 USA; 2.Chapman Univ, Schmid Coll Sci & Technol, Orange, CA 92866 USA; 3.Pacific Northwest Natl Lab, Richland, WA 99354 USA; 4.Florida State Univ, Earth Ocean & Atmospher Sci, Tallahassee, FL 32306 USA; 5.Georgia Inst Technol, Sch Biol Sci, Atlanta, GA 30332 USA; 6.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 7.Oak Ridge Natl Lab, Div Environm Sci, POB 2008, Oak Ridge, TN 37831 USA |
推荐引用方式 GB/T 7714 | Hopple, A. M.,Wilson, R. M.,Kolton, M.,et al. Massive peatland carbon banks vulnerable to rising temperatures[J]. NATURE COMMUNICATIONS,2020,11(1). |
APA | Hopple, A. M..,Wilson, R. M..,Kolton, M..,Zalman, C. A..,Chanton, J. P..,...&Bridgham, S. D..(2020).Massive peatland carbon banks vulnerable to rising temperatures.NATURE COMMUNICATIONS,11(1). |
MLA | Hopple, A. M.,et al."Massive peatland carbon banks vulnerable to rising temperatures".NATURE COMMUNICATIONS 11.1(2020). |
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