气候变化领域集成服务门户(CCPortal): Archaeal tetraether-inferred hydrological variations of Serling Co (Central Tibet) during the late Quaternary

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DOI	10.1016/j.gloplacha.2023.104113
	Archaeal tetraether-inferred hydrological variations of Serling Co (Central Tibet) during the late Quaternary
	Kou, Qiangqiang; Zhu, Liping; Wang, Junbo; Ma, Qingfeng; Ju, Jianting
发表日期	2023
ISSN	0921-8181
EISSN	1872-6364
卷号	224
英文摘要	Lake-level reconstructions aid in clarifying the relationship between climatic and hydrological changes and serve as a reference for predicting future hydrological evolution trends in the context of current global warming. Serling Co, which undergoes frequent lake-level changes in central Tibet, is an ideal study area; however, the paleohydrological evolution of this region remains contested. In this study, we analyzed tetraether lipids in Serling Co sediments and successfully reconstructed quantitatively the lake-level history since 25.1 cal kyr BP using its derived lake-level proxies (%OH-GDGTs, %Cren, and Cren/Cren' ratio) and salinity proxies (the relative abundance of archaeol to caldarchaeol (ACE) and archaeol to brGDGTs (ACE')). The results indicate that Serling Co experienced a low lake-level stage during the Last Glacial Maximum, a severe fluctuation stage during the last deglaciation, and a relatively high lake-level stage in the Holocene, corresponding to typical climatic events. The evolution of the lake level in Serling Co is comparable to paleoclimate records from the Tibetan Plateau, sug-gesting consistent Indian summer monsoon (ISM) dynamics. The increase in precipitation caused by the enhanced ISM may be the main cause for the rise of the lake level in Serling Co during the Bolling/Allerod and Early Holocene. From 7.8 to 1.8 cal kyr BP, Serling Co maintained a relatively stable lake level under a moderate monsoon intensity and reduced solar radiation. After 1.8 cal kyr BP, Serling Co shrank rapidly under a series of chain reactions caused by the weakening of the Atlantic meridional overturning circulation. We emphasize the importance of long-term precipitation-evaporation balance on lake level variation, particularly for some large lakes in arid and semi-arid regions, and that climate events affect the lake level by breaking this balance. Our study provides the first quantitative record of lake-level changes in central Tibet during the Late Quaternary and clarifies the role and mechanism of climate change in the process of hydrological evolution in this region, which may serve as a general reference for the study of hydrological evolution in the transition region between the ISM and the westerlies.
关键词	Serling Co Archaeal tetraethers Lake-level reconstruction Indian Monsoon Tibetan Plateau
英文关键词	LAKE QINGHAI SEDIMENTS; CLOSED-BASIN LAKE; ASIAN MONSOON; CLIMATE-CHANGE; SILING-CO; SELIN CO; NAM CO; ENVIRONMENTAL VARIABLES; GLYCEROL TETRAETHERS; PLATEAU IMPLICATIONS
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000981156000001
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283059
作者单位	Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Kou, Qiangqiang,Zhu, Liping,Wang, Junbo,et al. Archaeal tetraether-inferred hydrological variations of Serling Co (Central Tibet) during the late Quaternary[J]. 中国科学院青藏高原研究所,2023,224.
APA	Kou, Qiangqiang,Zhu, Liping,Wang, Junbo,Ma, Qingfeng,&Ju, Jianting.(2023).Archaeal tetraether-inferred hydrological variations of Serling Co (Central Tibet) during the late Quaternary.GLOBAL AND PLANETARY CHANGE,224.
MLA	Kou, Qiangqiang,et al."Archaeal tetraether-inferred hydrological variations of Serling Co (Central Tibet) during the late Quaternary".GLOBAL AND PLANETARY CHANGE 224(2023).