Chinese Journal of Oceanology and Limnology

, Volume 15, Issue 3, pp 279–284 | Cite as

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

  • Shen Ji
  • Ryo Matsumoto
  • Wang Su-min


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.

Key words

organic carbon isotope paleoclimate Gucheng Lake 


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Copyright information

© Science Press 1997

Authors and Affiliations

  • Shen Ji
    • 1
  • Ryo Matsumoto
    • 1
  • Wang Su-min
    • 2
  1. 1.Geological InstituteUniversity of TokyoTokyoJapan
  2. 2.Nanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing

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