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 D.; Zhou A.; Zhang J.; Chen J.; Li G.; Wang Q.; Chen L.; Madsen D.; Abbott M.; Cheng B.; Chen F.
发表日期	2020
ISSN	0277-3791
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 14C 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. © 2020 Elsevier Ltd
英文关键词	Dry climate; Holocene; Lake Dalianhai; Lake level; Temperature; Tibetan plateau
语种	英语
scopus关键词	Global warming; Arid and semi-arid regions; Geochemical parameters; Hydrology and water resource; Northeastern tibetan plateaux; Possible futures; Summer temperature; Temperature-induced; Terrestrial plants; Lakes; accelerator mass spectrometry; arid region; carbon isotope; climate variation; geoaccumulation; global warming; Holocene; microfossil; paleotemperature; precipitation (chemistry); reconstruction; sampling; sediment core; semiarid region; water resource; China; Gonghe Basin; Qinghai
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/151480
作者单位	College of Earth and Environmental Sciences, MOE Key Laboratory of Western China's Environmental Systems, Lanzhou University, Lanzhou, 730000, China; Department of Geology and Environmental Science, University of Pittsburgh, Pittsburgh, 15260, United States; College of Urban and Environmental Sciences, Central China Normal University, Wuhan, 430079, China; Institute of Tibetan Plateau Research, Key Laboratory of Alpine Ecology, Chinese Academy of Sciences, Beijing, 100101, China
推荐引用方式 GB/T 7714	Wu D.,Zhou A.,Zhang J.,et al. Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene[J],2020,237.
APA	Wu D..,Zhou A..,Zhang J..,Chen J..,Li G..,...&Chen F..(2020).Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene.Quaternary Science Reviews,237.
MLA	Wu D.,et al."Temperature-induced dry climate in basins in the northeastern Tibetan Plateau during the early to middle Holocene".Quaternary Science Reviews 237(2020).