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C-14 Variation of Dissolved Lignin in Arctic River Systems

文献类型：期刊论文

作者Feng, Xiaojuan3; Vonk, Jorien E.; Griffin, Claire1,7; Zimov, Nikita6; Montlucon, Daniel B.; Wacker, Lukas5; Eglinton, Timothy I.
刊名ACS EARTH AND SPACE CHEMISTRY
出版日期2017
卷号1期号:6页码:334-344
关键词Compound-specific radiocarbon analysis arctic rivers dissolved organic matter lignin phenols Keeling plot
ISSN号2472-3452
DOI10.1093/jpe/rtw114
文献子类Article
英文摘要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.
学科主题Plant Sciences ; Environmental Sciences & Ecology ; Forestry
出版地WASHINGTON
WOS关键词TERRESTRIAL CARBON TRANSFER ; ANCIENT PERMAFROST CARBON ; ORGANIC-MATTER ; MULTIMOLECULAR TRACERS ; RADIOCARBON ANALYSIS ; AMAZON RIVER ; EXPORT ; BIOMARKERS ; DELTA-C-14 ; COMPONENTS
语种英语
WOS记录号WOS:000397126800009
出版者AMER CHEMICAL SOC
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]
源URL[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.Vonk, Jorien E.] Vrije Univ Amsterdam, Dept Earth Sci, NL-1081 HV Amsterdam, Netherlands
2.Univ Chinese Acad Sci, Beijing 100000, Peoples R China
3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
4.Swiss Fed Inst Technol, Lab Ion Beam Phys LIP, CH-8093 Zurich, Switzerland
5.Russian Acad Sci, Far Eastern Branch, Pacific Inst Geog, RU-690041 Cherskiy, Yakutia, Russia
6.Univ Texas Austin, Marine Sci Inst, Port Aransas, TX 78373 USA
7.Univ Minnesota Twin Cities, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA
8.Feng, Xiaojuan; Montlucon, Daniel B.; Eglinton, Timothy I.] Swiss Fed Inst Technol, Geol Inst, CH-8092 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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来源：植物研究所

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