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| C-14 Variation of Dissolved Lignin in Arctic River Systems | |
Feng, Xiaojuan1 ; Vonk, Jorien E.; Griffin, Claire4,5; Zimov, Nikita6; Montlucon, Daniel B.; Wacker, Lukas7; Eglinton, Timothy I.
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| 2017 | |
| 发表期刊 | ACS EARTH AND SPACE CHEMISTRY
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| ISSN | 2472-3452 |
| 卷号 | 1期号:6页码:334-344 |
| 摘要 | Assessing permafrost-release signals in arctic rivers is challenging due to mixing of complex carbon components of contrasting ages. Compound-specific C-14 analysis of terrestrially derived molecules may reduce the influence of mixed carbon sources and potentially provide a closer examination on the dynamics of permafrost-derived carbon in arctic rivers. Here we employed a recently modified method to determine radiocarbon contents of lignin phenols, as a classic tracer for terrestrial carbon, isolated from the dissolved organic matter (DOM) of two arctic river systems that showed contrasting seasonal dynamics and age components in DOM. While dissolved lignin had relatively invariant C-14 contents in the Mackenzie, it was more concentrated and C-14 enriched during spring thaw but relatively diluted and C-14-depleted in the summer flow or permafrost thaw waters in the Kolyma. Remarkably, the covariance between dissolved lignin concentrations and its C-14 contents nicely followed the Keeling plot, indicating mixing of a young pool of dissolved lignin with an aged pool of a constant concentration within the river. Using model parameters, we showed that although the young pool had similarly modern ages in both rivers, Kolyma had a much higher concentration of aged dissolved lignin and/or with older ages. With this approach, our study not only provided the first set of C data on dissolved lignin phenols in rivers but also demonstrated that the age and abundance of the old DOM pool can be assessed by radiocarbon dating of dissolved lignin in arctic rivers related to permafrost release. |
| 关键词 | Compound-specific radiocarbon analysis arctic rivers dissolved organic matter lignin phenols Keeling plot |
| 学科领域 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
| DOI | 10.1093/jpe/rtw114 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS关键词 | TERRESTRIAL CARBON TRANSFER ; ANCIENT PERMAFROST CARBON ; ORGANIC-MATTER ; MULTIMOLECULAR TRACERS ; RADIOCARBON ANALYSIS ; AMAZON RIVER ; EXPORT ; BIOMARKERS ; DELTA-C-14 ; COMPONENTS |
| WOS记录号 | WOS:000397126800009 |
| 出版者 | AMER CHEMICAL SOC |
| 文献子类 | Article |
| 出版地 | WASHINGTON |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41422304, 31370491] ; Swiss National Science foundation (SNF)Swiss National Science Foundation (SNSF) [200021_140850] ; U.S. National Science Foundation (NSF)National Science Foundation (NSF) [OCE-9907129, OCE-0137005, OCE-0526268] ; ETH ZUrichETH Zurich ; NWO RubiconNetherlands Organization for Scientific Research (NWO) [825.10.022] ; NWO VeniNetherlands Organization for Scientific Research (NWO) [863.12.004] |
| 作者邮箱 | xfeng@ibcas.ac.cn |
| 作品OA属性 | Bronze |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ibcas.ac.cn/handle/2S10CLM1/22127 |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100000, Peoples R China 3.Feng, Xiaojuan; Montlucon, Daniel B.; Eglinton, Timothy I.] Swiss Fed Inst Technol, Geol Inst, CH-8092 Zurich, Switzerland 4.Vonk, Jorien E.] Vrije Univ Amsterdam, Dept Earth Sci, NL-1081 HV Amsterdam, Netherlands 5.Univ Minnesota Twin Cities, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA 6.Univ Texas Austin, Marine Sci Inst, Port Aransas, TX 78373 USA 7.Russian Acad Sci, Far Eastern Branch, Pacific Inst Geog, RU-690041 Cherskiy, Yakutia, Russia 8.Swiss Fed Inst Technol, Lab Ion Beam Phys LIP, CH-8093 Zurich, Switzerland |
| 推荐引用方式 GB/T 7714 | Feng, Xiaojuan,Vonk, Jorien E.,Griffin, Claire,et al. C-14 Variation of Dissolved Lignin in Arctic River Systems[J]. ACS EARTH AND SPACE CHEMISTRY,2017,1(6):334-344. |
| APA | Feng, Xiaojuan.,Vonk, Jorien E..,Griffin, Claire.,Zimov, Nikita.,Montlucon, Daniel B..,...&Eglinton, Timothy I..(2017).C-14 Variation of Dissolved Lignin in Arctic River Systems.ACS EARTH AND SPACE CHEMISTRY,1(6),334-344. |
| MLA | Feng, Xiaojuan,et al."C-14 Variation of Dissolved Lignin in Arctic River Systems".ACS EARTH AND SPACE CHEMISTRY 1.6(2017):334-344. |
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