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Organic stable carbon isotopic composition reveals late Quaternary vegetation changes in the dune fields of northern China
Lu, HY (Lu, Huayu)[1,2]; Zhou, YL (Zhou, Yali)[3]; Liu, WG (Liu, Weiguo)[4]; Mason, J (Mason, Joseph)[2]
2012-05-30
Source PublicationQUATERNARY RESEARCH
Volume77Issue:3Pages:433-444
Subtype期刊论文
Abstract

Vegetation changes during the late Quaternary in the dune fields of northern China are not well understood. We investigated organic carbon stable isotopic composition of surface soils, related mainly to the ratio of C-3 and C-4 plants, across a range of arid to subhumid climates in this region. Isotopic composition is weakly related to both temperature and moisture (multiple R-2=0.53), with the highest delta C-13 (greatest C4 abundance) in the warm, subhumid Horqin dune field. In late Quaternary, eolian stratigraphic sections of the Mu Us and Horqin dune fields, but not in the much colder Otindag dune field, delta C-13 is higher in organic carbon from paleosols than in eolian sands. This contrast, most evident for paleosols recording a major early to middle Holocene phase of dune stabilization, is interpreted as evidence for expansion of C4 plants due to increased effective moisture, high temperature because of high insolation, and decreased disturbance related to eolian erosion and deposition.

KeywordDune Fields Stable Carbon Isotopes C4 Plants Vegetation Changes Climatic Change Northern China Late Quaternary
DOI10.1016/j.yqres.2012.01.009
Indexed BySCI ; EI
Language英语
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Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10203
Collection加速器质谱中心
Corresponding AuthorLu, HY (Lu, Huayu)[1,2]
Affiliation1.School of Geographic and Oceanographic Sciences, the MOE Key Laboratory of Coast and Island Development, Nanjing University, Nanjing 210093, China;
2.Department of Geography, University of Wisconsin Madison, WI 53706, USA;
3.College of Tourism and Environment, Shaanxi Normal University, Xian 710062, China;
4.Institute of Earth Environment, State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences, Xian 710075, China
Recommended Citation
GB/T 7714
Lu, HY ,Zhou, YL ,Liu, WG ,et al. Organic stable carbon isotopic composition reveals late Quaternary vegetation changes in the dune fields of northern China[J]. QUATERNARY RESEARCH,2012,77(3):433-444.
APA Lu, HY ,Zhou, YL ,Liu, WG ,&Mason, J .(2012).Organic stable carbon isotopic composition reveals late Quaternary vegetation changes in the dune fields of northern China.QUATERNARY RESEARCH,77(3),433-444.
MLA Lu, HY ,et al."Organic stable carbon isotopic composition reveals late Quaternary vegetation changes in the dune fields of northern China".QUATERNARY RESEARCH 77.3(2012):433-444.
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