Journal
SCIENCE CHINA-EARTH SCIENCES
Volume 62, Issue 8, Pages 1193-1206Publisher
SCIENCE PRESS
DOI: 10.1007/s11430-018-9232-4
Keywords
Carbon isotope; Lake; Arid region of northwestern China; Total organic carbon; Organic biomarkers
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Funding
- National Natural Science Foundation of China
- CAS Strategic Priority Research Program [XDA05120400]
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The stable carbon isotope composition (C-13) of lacustrine sediments, which can record changes in past environmental conditions such as the C-4/C-3 terrestrial vegetation composition, has been widely used for the reconstruction of terrestrial ecosystems and global climate changes. It has also been widely used in paleolimnological studies in arid northwestern China. In recent years, however, an increasing number of studies have enriched the environmental significance reflected by the stable carbon isotope geochemistry of lakes; therefore, the interpretation of lake C-13 variations in paleoenvironmental reconstructions should be carefully evaluated from various aspects. In this paper, previous studies from the past several decades on the lacustrine C-13 variations in arid northwestern China were reviewed, and the possible mechanisms of the C-13 variations were discussed. Our study will provide a reference for the application of carbon isotope geochemistry in paleoenvironmental reconstructions.
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