Restricted utility of delta C-13 of bulk organic matter as a record of paleovegetation in some loess-paleosol sequences in the Chinese Loess Plateau

doi:10.1016/j.yqres.2004.03.004

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（1985-2004）

	Restricted utility of delta C-13 of bulk organic matter as a record of paleovegetation in some loess-paleosol sequences in the Chinese Loess Plateau
	Xie, SC; Guo, JQ; Huang, JH; Chen, FH; Wang, HB; Farrimond, P
	2004-07
发表期刊	QUATERNARY RESEARCH
卷号	62 期号:1 页码:86-93
文章类型	Article
摘要	Molecular stratigraphic analyses using gas chromatograph-mass spectrometry have been performed in the upper section (S-0, L-1, S-1) of the Yuanbo loess-paleosol sequences in northwest China, with a record extending from the last interglaciation through the present interglaciation. The CPI (Carbon Preference Index) values of both n-alkanols and n-alkan-2-ones display variations between loess deposits and paleosols, showing a correlation with the magnetic susceptibility record, an indicator of the East Asian summer monsoon. The observed variations in the indexes in relation to changes in lithology/paleoclimate are proposed to result from microbial degradation of higher plant lipids in the paleosols. The CPI values of n-alkanes, n-alkanols, and n-alkan-2-ones are negatively correlated with delta(13)C of bulk organic matter. The correlations suggest that the observed glacial-interglacial variations of delta(13)C data in the loess stratigraphy reflect the relative importance of the contribution of paleovegetation compared with microorganisms (including both the degradation and the addition of organic matter) and allochthonous loess/soil parent materials. It is thus necessary to evaluate the contributions of the latter two before the paleovegetation can be reconstructed based on the delta(13)C analysis of bulk organic matter in some loess-paleosol sequences of the Chinese Loess Plateau. (C) 2004 University of Washington. All rights reserved.
关键词	biomarkers carbon isotopes loess monsoon climate northwest China paleosols
学科领域	Physical Geography ; Geology
DOI	10.1016/j.yqres.2004.03.004
关键词[WOS]	NORTH-CENTRAL CHINA ; MAGNETIC-SUSCEPTIBILITY ; CLIMATIC CHANGES ; HYDROCARBONS ; AEROSOLS ; LIPIDS ; PROXY ; DISTRIBUTIONS ; ASSEMBLAGES ; ATLANTIC
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000222925600009
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
引用统计	被引频次：30[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/361006/11984
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Xie, SC,Guo, JQ,Huang, JH,et al. Restricted utility of delta C-13 of bulk organic matter as a record of paleovegetation in some loess-paleosol sequences in the Chinese Loess Plateau[J]. QUATERNARY RESEARCH,2004,62(1):86-93.
APA	Xie, SC,Guo, JQ,Huang, JH,Chen, FH,Wang, HB,&Farrimond, P.(2004).Restricted utility of delta C-13 of bulk organic matter as a record of paleovegetation in some loess-paleosol sequences in the Chinese Loess Plateau.QUATERNARY RESEARCH,62(1),86-93.
MLA	Xie, SC,et al."Restricted utility of delta C-13 of bulk organic matter as a record of paleovegetation in some loess-paleosol sequences in the Chinese Loess Plateau".QUATERNARY RESEARCH 62.1(2004):86-93.