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A 3600 years paleoclimatic change inferred from organic δ13C and TOC/TN of the Gucheng Lake sediments, southeast China

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Abstract

A 6.2 m thick core of Gucheng Lake sediment provided a 3600 years record of climate change. The contents of the TOC in the core changed from 2.63% to 8.48%, and the δ13C values of organic matter were from −21.54% to −27.3%. The TOC/TN ratios indicated that the organic materials in sediments were from lake plankton and land-derived plants.

The 2.9–22 m core interval with high TOC/TN ratios, low δ13C values and low contents of TOC indicated a cold climate stage. The 6.2–5.5 m and 0.4–0.1 m intervals were characterized by low TOC/TN ratios, high δ13C values and high contents of TOC, and reflected temperate climate stages.

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Authors and Affiliations

  1. Geological Institute, University of Tokyo, Hongo, 113, Tokyo, Japan

    Shen Ji & Ryo Matsumoto

  2. Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 21008, Nanjing

    Wang Su-min

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  1. Shen Ji
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  2. Ryo Matsumoto
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  3. Wang Su-min
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Project 49372129 supported by NSFC.

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Ji, S., Matsumoto, R. & Su-min, W. A 3600 years paleoclimatic change inferred from organic δ13C and TOC/TN of the Gucheng Lake sediments, southeast China. Chin. J. Ocean. Limnol. 15, 279–284 (1997). https://doi.org/10.1007/BF02850885

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  • DOI: https://doi.org/10.1007/BF02850885

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