globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2016.01.001
论文题名:
Climate signals in δ13C of wood lignin methoxyl groups from high-elevation larch trees
作者: Riechelmann D.F.C.; Greule M.; Treydte K.; Esper J.; Keppler F.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2016
卷: 445
起始页码: 60
结束页码: 71
语种: 英语
英文关键词: Alps ; Palaeoclimate ; Proxy data ; Stable carbon isotopes ; Switzerland ; Tree-rings
英文摘要: In this study, a barely used method to measure δ13C values from lignin methoxyl groups (δ13Cmethoxyl) of tree-rings is applied to high alpine larch trees to test their potential as a climate proxy. Thirty-seven larch trees (Larix decidua Mill.) were sampled at a tree line site near Simplon Village in the Valais/Switzerland. Samples were used to measure tree-ring width, and from five individuals, δ13Cmethoxyl was determined at annual resolution from 1971 to 2009, and at pentadal resolution from 1747 to 2009.The physiological tree responses to increasing atmospheric CO2 concentration since 1850 and the corresponding decrease in δ13C (Suess effect) were corrected using a range of published discrimination factors and approaches. One of these approaches considers a flexible correction factor, which minimizes the residuals with target climate data.Testing the response of the new δ13Cmethoxyl proxy to climate revealed significant correlations with June to August temperatures, ranging from r=0.56 to 0.75 for annually and from r=0.41 to 0.87 for pentadally resolved data depending on the correction methods. Tree-ring width also shows significant correlations with June to August temperature. These results demonstrate the potential of δ13Cmethoxyl to serve as a summer temperature proxy in high-elevation alpine environments. © 2016 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68567
Appears in Collections:过去全球变化的重建

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作者单位: Institute of Geography, Johannes Gutenberg-University Mainz, Johann-Joachim-Becher-Weg 21, Mainz, Germany; Institute for Geosciences, Johannes Gutenberg-University Mainz, Johann-Joachim-Becher-Weg 21, Mainz, Germany; Institute of Earth Sciences, Ruprecht-Karls University Heidelberg, Im Neuenheimer Feld 236, Heidelberg, Germany; Department of Atmospheric Chemistry, Max Planck Institute for Chemistry, Hahn-Meitner-Weg 1, Mainz, Germany; Swiss Federal Institute for Forest, Snow and Landscape Research WSL, Zürcherstrasse 111, Birmensdorf, Switzerland

Recommended Citation:
Riechelmann D.F.C.,Greule M.,Treydte K.,et al. Climate signals in δ13C of wood lignin methoxyl groups from high-elevation larch trees[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2016-01-01,445
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