| Acyclic Alkanes in the Soil over Heshang Cave in Qingjiang, Hubei Province |
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| 作者姓名： | 蒲阳 黄俊华 黄咸雨 崔景伟 胡超涌 |
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| 作者单位： | State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences，State Key Laboratory of Geological Processes and Mineral Resources，China University of Geosciences，State Key Laboratory of Geological Processes and Mineral Resources，China University of Geosciences，State Key Laboratory of Geological Processes and Mineral Resources，China University of Geosciences，Laboratory of Biogeology and Environmental Geology Ministry of Education China University of Geosciences Wuhan430074 China，Wuhan430074 China，Wuhan430074 China，Wuhan430074 China，Wuhan430074 China |
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| 基金项目： | This paper is supported by the National Natural Science Foundation ofChina (Nos .90211014 ,40572098 and 40531004) . |
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| 摘 要： | Biomarkers have been widely used to exploreglobal change such as paleocli mate and paleovegeta-tion based on the analyses of marine sedi ments( Volkman et al ., 1995 ) , lacustrine sedi ments(Sheng et al ., 1999) , snow and ice ( Xie et al .,1999) ,peat (Xie et al .,2004) ,and stalagmites (Xieet al ., 2005 , 2003a) . Research into biomarkers inChina has been conducted in many soils . Aseries ofbiomarkers were identified from the Jiuzhoutaipaleosol-loess profilein Lanzhou,andn-alkanes werepr…
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Acyclic Alkanes in the Soil over Heshang Cave in Qingjiang, Hubei Province |
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| Pu Yang,Huang Junhua,Huang Xianyu,Cui Jingwei,Hu Chaoyong.Acyclic Alkanes in the Soil over Heshang Cave in Qingjiang, Hubei Province[J].Journal of China University of Geosciences,2006,17(2). |
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| Authors: | Pu Yang Huang Junhua Huang Xianyu Cui Jingwei Hu Chaoyong |
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| Abstract: | The reports that relate to the biomarker's fate and characteristics of the modern soil in the karst area are very lacking. By using gas chromatography-mass spectrometry (GC-MS), a series of biomaximum at C31. They have a strong odd-over-even carbon number predominance. These characteristics represent an input mainly from higher plants. The lipid parameters, including CPIh (carbon preference index), Rh/1 (ratio of lower- to higher-molecular-weight homologues) and ACL (average chain length),show comparable trends with depth, probably reflecting vegetation change and microbial degradation.Series of monomethylalkanes and dipioptene are present in the extractable organic matter; they might be derived from soil microbes, cyanobacteria in particular. |
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| Keywords: | biomarker modern soil n-alkanes vegetation cyanobacteria |
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