气候变化领域集成服务门户(CCPortal): ENSO-driven hydroclimate changes in central Tibetan Plateau since middle Holocene: Evidence from Zhari Namco's lake sediments

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DOI	10.1016/j.quascirev.2024.108593
	ENSO-driven hydroclimate changes in central Tibetan Plateau since middle Holocene: Evidence from Zhari Namco's lake sediments
	Wu, Changrun; Liu, Guangxin; Cong, Lu; Li, Xiangzhong; Liu, Xiangjun; Liu, Yuning; Wu, Deyan; Zhang, Yuyan; Bai, Die
发表日期	2024
ISSN	0277-3791
EISSN	1873-457X
起始页码	330
卷号	330
英文摘要	The Tibetan Plateau, often referred to as the Asian Water Tower, holds immense significance as a critical water source for billions of people in surrounding regions. Its unique location and extreme environmental conditions contribute to the formation of some of the world largest lakes, crucial components of the regional water cycle. These lakes not only store vast freshwater resources but also play a vital role in regulating the flow and quality of rivers, maintaining a delicate balance in the local ecosystem. Recent decades have witnessed rapid expansion of many plateau lakes, primarily attributed to glacial melt. However, evaluating the contribution of climate forcings to these changes remains challenging. In this study, we reconstructed Zhari Namco's lake -level changes between 5.3 ka and 1.3 ka based on optically stimulated luminescence dating, a period with relatively stable glacial amount on the Tibetan Plateau. Our analysis employed sediment grain size distribution, organic matter contents and their stable carbon isotopes. In contrast to recent expansions, our findings reveal a declining trend in Zhari Namco's lake level since the middle Holocene, consistent with intermittent paleo-shoreline records from major central Tibetan Plateau lakes. This regional decline is likely the result of a weakening of the Indian Summer Monsoon. In addition to the long-term drying trend, we identified high -frequency fluctuations in Zhari Namco's lake level on centennial timescale. Further comparison with hydroclimate records from the tropics suggests that centennial high lake levels correlate with increased monsoonal precipitation during periods when ENSO activities were reduced. This study sheds lights on the historical dynamics and driving mechanisms of Zhari Namco's lake levels, providing valuable insights for predicting the impacts of future climate change on the Tibetan Plateau's water cycle.
英文关键词	Zhari namco; Organic carbon isotope; Lake level; ENSO; Holocene
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001207300400001
来源期刊	QUATERNARY SCIENCE REVIEWS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290425
作者单位	Yunnan University; Yunnan University; Jiaying University; Yunnan University
推荐引用方式 GB/T 7714	Wu, Changrun,Liu, Guangxin,Cong, Lu,et al. ENSO-driven hydroclimate changes in central Tibetan Plateau since middle Holocene: Evidence from Zhari Namco's lake sediments[J],2024,330.
APA	Wu, Changrun.,Liu, Guangxin.,Cong, Lu.,Li, Xiangzhong.,Liu, Xiangjun.,...&Bai, Die.(2024).ENSO-driven hydroclimate changes in central Tibetan Plateau since middle Holocene: Evidence from Zhari Namco's lake sediments.QUATERNARY SCIENCE REVIEWS,330.
MLA	Wu, Changrun,et al."ENSO-driven hydroclimate changes in central Tibetan Plateau since middle Holocene: Evidence from Zhari Namco's lake sediments".QUATERNARY SCIENCE REVIEWS 330(2024).