气候变化领域集成服务门户(CCPortal): Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene

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DOI	10.1016/j.quascirev.2020.106311
	Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene
	Wu, Duo; Zhou, Aifeng; Zhang, Jiawu; Chen, Jianhui; Li, Guoqiang; Wang, Qiang; Chen, Lin; Madsen, David; Abbott, Mark; Cheng, Bo; Chen, Fahu
通讯作者	Wu, D ; Zhou, AF (通讯作者)
发表日期	2020
ISSN	0277-3791
EISSN	1873-457X
卷号	237
英文摘要	Ongoing global warming will have a significant impact on terrestrial water resources, especially in arid and semi-arid regions. Assessing changes in the hydrology and water resources in inland basins under a warm climate in the recent geological past can provide a valuable context for assessing their current and possible future status. Here we present a record from a rapidly-accumulating sediment core from Lake Dalianhai in the Gonghe Basin in the northeastern Tibetan Plateau. The chronology of the uppermost 51.63 m of the core is based on AMS C-14 dates from 11 samples of terrestrial plant microfossils and 14 bulk samples. Hydroclimatic variations within the basin during the last 23,000 yr were reconstructed from sedimentological and geochemical parameters and paleoshoreline records. The results indicate that the Gonghe Basin experienced relatively arid conditions during 23,000-14,700 cal yr BP. Lake Dalianhai was refilled at 14,700 cal yr BP and a high lake level was sustained until the beginning of the Holocene, as indicated by changes in the concentration of OH-GDGTs. However, the lake level was low during the early to middle Holocene (11,700-4700 cal yr BP) and increased during the late Holocene. Based on a comparison with lake level records and aeolian sand deposits from the region, we conclude that the climate was extremely dry in basins in the northeastern Tibetan Plateau during the early to middle Holocene. We propose that strong evaporation combined with high summer temperatures during the early to middle Holocene were responsible for the dry climate at that time, rather than changes in mid-latitude precipitation. Given the situation occurred during the early to middle Holocene, ongoing global warming may seriously threaten water resources in inland China, even if precipitation increases substantially. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	QINGHAI LAKE AREA INTERTROPICAL CONVERGENCE ZONE SUMMER MONSOON EVOLUTION ARID CENTRAL-ASIA GONGHE BASIN MOISTURE EVOLUTION AEOLIAN SEDIMENTS LATE PLEISTOCENE GENGGAHAI LAKE YELLOW-RIVER
英文关键词	Tibetan plateau; Lake Dalianhai; Holocene; Lake level; Temperature; Dry climate
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000533150700012
来源期刊	QUATERNARY SCIENCE REVIEWS
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/259968
推荐引用方式 GB/T 7714	Wu, Duo,Zhou, Aifeng,Zhang, Jiawu,et al. Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene[J]. 中国科学院青藏高原研究所,2020,237.
APA	Wu, Duo.,Zhou, Aifeng.,Zhang, Jiawu.,Chen, Jianhui.,Li, Guoqiang.,...&Chen, Fahu.(2020).Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene.QUATERNARY SCIENCE REVIEWS,237.
MLA	Wu, Duo,et al."Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene".QUATERNARY SCIENCE REVIEWS 237(2020).