【摘 要】
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The reports that relate to the biomarkers fate and characteristics of the modern soil in the karst area are very lacking. By using gas chromatography-mass spect
【机 构】
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State Key Laboratory of Geological Processes and Mineral Resources,Laboratory of Biogeology and Envi
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The reports that relate to the biomarkers 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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