Paleoclimatic Change Inferred from Carbon Isotope Composition of Organic Matter in Sediments of Dabusu Lake, Jilin Province, China

• Published in: Chinese journal of oceanology and limnology Vol. 22; no. 2; pp. 124 - 129
• Main Author: 沈吉 张恩楼 羊向东 RyoMatsumoto
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.06.2004; Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China%Geological Institute, University of Tokyo, Tokyo 113, Japan
• Subjects: Carbon; Carbon isotopes; Carbonates; Chemical composition; Freshwater; Isotope composition; Isotopes; Lake basins; Lakes; Organic compounds; Organic materials; Organic matter; Runoff; Saline environments; Salt lakes; Sediment; Sediments; Stable isotopes; 古气候; 有机碳同位素; China, People's Rep., Jilin Prov., Dabusu L; Dabusu Lake; paleoclimate; organic carbon isotope
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/bf02842582

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 rtmoff.The δ^13 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 and ^14C 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.