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The n-alkanol paleoclimate records in two peat deposits: a comparative study of the northeastern margin of the Tibetan Plateau and Northeast China
Zheng, YH (Zheng, Yanhong)[1,2]; Zhou, WJ (Zhou, Weijian)[2]; Liu, Z (Liu, Zhao)[2]; Liu, XM (Liu, Xiaomin)[1]
2011-05-30
发表期刊ENVIRONMENTAL EARTH SCIENCES
卷号63期号:1页码:135-143
文章类型期刊论文
摘要

A number of studies have revealed that the climate in the eastern margin of the Tibetan Plateau and Northeast China is sensitive to postglacial changes. Unfortunately, the link of the past climate evolution between the two regions is not well understood. In this study, two cores are analyzed to determine this link directly. The high-resolution n-alkanol distribution patterns from two typical peat sequences covering the past 16,000 cal years in the northeastern margin of the Tibetan Plateau and Northeast China, respectively, are closely examined by gas chromatograph-mass spectrometry analysis. In combination with other palaeoclimatic proxies, it is proposed that the n-alkanol average chain length and (C(22) + C(24))/(C(26) + C(28)) ratio could reflect past climate changes in the two peat sequences. The n-alkanol proxies reveal several climatic intervals in the period from the last deglaciation through the Holocene. A comparison of n-alkanol records between the northeastern margin of the Tibetan Plateau and Northeast China indicates that the start and end of the warm Holocene Optimum differed at the two locations. The spatially asynchronous pattern of climatic change is possibly a result of different responses to change in solar radiation. The evolution of the Holocene paleoclimate is more consistent with changes in Northern Hemisphere solar radiation in Northeast China than on the Tibetan Plateau. The Holocene Optimum began and terminated earlier in Northeast China than in the northeastern margin of the Tibetan Plateau. Thus, the two n-alkanol proxies provide valuable insights into the regional Holocene climate and local environmental conditions.

关键词n-Alkanols Paleoclimate Comparative study The Tibetan Plateau Northeast China Solar radiation
DOI10.1007/s12665-010-0676-2
收录类别SCI
语种英语
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/10324
专题加速器质谱中心
通讯作者Zheng, YH (Zheng, Yanhong)[1,2]
作者单位1.State Key Laboratory of Continental Dynamics,Department of Geology, Northwest University,Xi’an 710069, China;
2.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment, Chinese Academy of Sciences,Xi’an 710075, China
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Zheng, YH ,Zhou, WJ ,Liu, Z ,et al. The n-alkanol paleoclimate records in two peat deposits: a comparative study of the northeastern margin of the Tibetan Plateau and Northeast China[J]. ENVIRONMENTAL EARTH SCIENCES,2011,63(1):135-143.
APA Zheng, YH ,Zhou, WJ ,Liu, Z ,&Liu, XM .(2011).The n-alkanol paleoclimate records in two peat deposits: a comparative study of the northeastern margin of the Tibetan Plateau and Northeast China.ENVIRONMENTAL EARTH SCIENCES,63(1),135-143.
MLA Zheng, YH ,et al."The n-alkanol paleoclimate records in two peat deposits: a comparative study of the northeastern margin of the Tibetan Plateau and Northeast China".ENVIRONMENTAL EARTH SCIENCES 63.1(2011):135-143.
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