A method of quantitatively calculating amount of allochthonous organic carbon in lake sediments |
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Authors: | Junlong Qian Sumin Wang Bin Xue Rusong Chen Shanzhe Ke |
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Institution: | (1) Nanjing Institute of Geography and Limnology, 210093 Nanjing, China;(2) Department of Physics, Nanjing University, 210093 Nanjing, China |
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Abstract: | Conclusion The lake sediments have registered the information of palaeoclimate and palaeoenvironment in the lake itself and the regional
scale. This also leads to a complexity in study of the palaeolimnology by all kinds of proxies. How to purify these proxies
to indicate the palaeoclimate has become a problem to be solved. Most of the proxies can qualitively identify the percentage
of allochthonous and autochthonous organic components, e.g. δ13corg CD/TC. The model introduced in this note has provided a method of quantitatively calculating the amount of allochthonous
organic carbon. As for determination of regulating parameters, i.e. A1 and As, further work is still in need. |
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Keywords: | lake sediment allochthonous organic carbon C/N |
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