Paleoclimatic change inferred from carbon isotope composition of organic matter in sediments of Dabusu Lake, Jilin Province, China

被引：0

作者：

Shen Ji

Zhang Enlou

Yang Xiangdong

Ryo Matsumoto

机构：

[1] Chinese Academy of Sciences,Nanjing Institute of Geography & Limnology

[2] University of Tokyo,Geological Institute

来源：

Chinese Journal of Oceanology and Limnology | 2004年 / 22卷 / 2期

关键词：

organic carbon isotope; paleoclimate; Dabusu Lake;

D O I：

10.1007/BF02842582

中图分类号：

学科分类号：

摘要：

Study on the organic compounds and stable isotope composition of a sediment section in Dabusu Lake revealed that the organic materials in the sediments came mainly from terrestrial plants brought into the lake by runoff. The δ13 C of the organic materials had high values during warm-dry climatic stages and decreased in cold-wet stages. Analysis of data on carbonate content and14C age showed that the lake basin had experienced several wet-cold and warm-dry climatic cycles since 15000 a BP. Since 6700 a BP, the climate reached a relatively stable warm-dry stage, so that the lake water was gradually condensed and finally a saline lake was formed.

引用

页码：124 / 129

页数：5

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