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
文献类型：期刊论文
| 作者 | Xie, SC; Guo, JQ; Huang, JH; Chen, FH; Wang, HB; Farrimond, P |
| 刊名 | QUATERNARY RESEARCH
 |
| 出版日期 | 2004-07 |
| 卷号 | 62期号:1页码:86-93 |
| 关键词 | biomarkers carbon isotopes loess monsoon climate northwest China paleosols |
| DOI | 10.1016/j.yqres.2004.03.004 |
| 文献子类 | Article |
| 英文摘要 | 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. |
| 学科主题 | Physical Geography ; Geology |
| WOS关键词 | NORTH-CENTRAL CHINA ; MAGNETIC-SUSCEPTIBILITY ; CLIMATIC CHANGES ; HYDROCARBONS ; AEROSOLS ; LIPIDS ; PROXY ; DISTRIBUTIONS ; ASSEMBLAGES ; ATLANTIC |
| WOS研究方向 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000222925600009 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [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. |
入库方式： OAI收割
来源：地球环境研究所
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