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DOI	10.1007/s00531-019-01767-x
	Late Quaternary environmental change record in biomarker lipid compositions of Lake Ebinur sediments; Northwestern China
	Zhou J.; Wu J.; Ma L.; Abuduwaili J.
发表日期	2019
ISSN	14373254
起始页码	2361
结束页码	2371
卷号	108 期号:7
英文摘要	Late Quaternary paleoclimate records from arid regions help us understand the response of ecological systems to natural climate change to place recent changes in a longer-term perspective. In this research, a biogeochemical analysis of a sediment core from Lake Ebinur, Xinjiang, allowed us to infer the climate and environmental changes in the late Quaternary in arid northwestern China. The combined lipid biomarkers and bulk biogeochemical properties (TOC, δ13Corg) revealed moderately wet conditions from 34 to 28 ka, favoring the growth of terrestrial vegetation. The subsequent period from 28 to 13 ka was dominated by aquatic plants, algae and microbes, indicating cold and dry conditions. Ameliorated regional moisture conditions were deduced from the higher carbon preference index (CPI) and from δ13Corg values from 13 to 3.6 ka. The optimum climate conditions occurred from 9 to 5 ka. Several climatic events also exist in the Lake Ebinur records with a wide distribution into other regions. Our biogeochemical-based paleoclimate and paleoenvironmental reconstruction is generally synchronous with sedimentary records from mid-latitude Eurasia and the NGRIP ice core record, which probably has a certain linkage with the 45°N summer insolation. We propose that summer insolation conditions in the northern hemisphere might have an impact on the climate and environmental changes in arid northwestern China in the late Quaternary. © 2019, Geologische Vereinigung e.V. (GV).
英文关键词	Biomarker; Climate and environmental change; Lake Ebinur; Late Quaternary; Northwestern China
语种	英语
scopus关键词	biogeochemistry; biomarker; climate change; environmental change; lacustrine deposit; lipid; paleoclimate; paleoenvironment; Quaternary; China; Ebinur Lake; Xinjiang Uygur; algae
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147784
作者单位	State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, 210008, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Zhou J.,Wu J.,Ma L.,et al. Late Quaternary environmental change record in biomarker lipid compositions of Lake Ebinur sediments; Northwestern China[J],2019,108(7).
APA	Zhou J.,Wu J.,Ma L.,&Abuduwaili J..(2019).Late Quaternary environmental change record in biomarker lipid compositions of Lake Ebinur sediments; Northwestern China.International Journal of Earth Sciences,108(7).
MLA	Zhou J.,et al."Late Quaternary environmental change record in biomarker lipid compositions of Lake Ebinur sediments; Northwestern China".International Journal of Earth Sciences 108.7(2019).