Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077747 |
A Biogeochemical Compromise: The High Methane Cost of Sequestering Carbon in Restored Wetlands | |
Hemes, Kyle S.1; Chamberlain, Samuel D.1; Eichelmann, Elke1; Knox, Sara H.2; Baldocchi, Dennis D.1 | |
2018-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:12页码:6081-6091 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Peatland drainage is an important driver of global soil carbon loss and carbon dioxide (CO2) emissions. Restoration of peatlands by reflooding reverses CO2 losses at the cost of increased methane (CH4) emissions, presenting a biogeochemical compromise. While restoring peatlands is a potentially effective method for sequestering carbon, the terms of this compromise are not well constrained. Here we present 14 site years of continuous CH4 and CO2 ecosystem-scale gas exchange over a network of restored freshwater wetlands in California, where long growing seasons, warm weather, and managed water tables result in some of the largest wetland ecosystem CH4 emissions recorded. These large CH4 emissions cause the wetlands to be strong greenhouse gas sources while sequestering carbon and building peat soil. The terms of this biogeochemical compromise, dictated by the ratio between carbon sequestration and CH4 emission, vary considerably across small spatial scales, despite nearly identical wetland climate, hydrology, and plant community compositions. Plain Language Summary Wetlands play an important role in the climate system, with restoration commonly undertaken for the benefit of atmospheric carbon dioxide removal and carbon storage in the soil. While flooded conditions suppress carbon dioxide emissions from decomposition and sequester carbon, they also generate methane, another potent heat-trapping greenhouse gas. Understanding the balance between these exchanges is important to our understanding of how restored or created wetlands will contribute to mitigating climate change. Here we present a long-term record of continuous carbon dioxide and methane exchange from restored wetlands in Northern California to understand the ultimate climate impact of wetland restoration. |
英文关键词 | methane greenhouse gas wetlands restoration |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438499100029 |
WOS关键词 | SAN-JOAQUIN DELTA ; COMPARISON PROJECT WETCHIMP ; EDDY COVARIANCE TECHNIQUE ; NET ECOSYSTEM EXCHANGE ; CLIMATE-CHANGE ; ATMOSPHERIC METHANE ; PRESENT STATE ; GAS-EXCHANGE ; RIVER DELTA ; CH4 FLUXES |
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/26235 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif Berkeley, Ecosyst Sci Div, Dept Environm Sci Policy & Management, Berkeley, CA 94720 USA; 2.Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA |
推荐引用方式 GB/T 7714 | Hemes, Kyle S.,Chamberlain, Samuel D.,Eichelmann, Elke,et al. A Biogeochemical Compromise: The High Methane Cost of Sequestering Carbon in Restored Wetlands[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(12):6081-6091. |
APA | Hemes, Kyle S.,Chamberlain, Samuel D.,Eichelmann, Elke,Knox, Sara H.,&Baldocchi, Dennis D..(2018).A Biogeochemical Compromise: The High Methane Cost of Sequestering Carbon in Restored Wetlands.GEOPHYSICAL RESEARCH LETTERS,45(12),6081-6091. |
MLA | Hemes, Kyle S.,et al."A Biogeochemical Compromise: The High Methane Cost of Sequestering Carbon in Restored Wetlands".GEOPHYSICAL RESEARCH LETTERS 45.12(2018):6081-6091. |
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