干旱区生态环境知识资源中心(Arid): Climatic and limnological changes 12,750 to 3600 years ago in the Issyk-Kul catchment, Tien Shan, based on palynology and stable isotopes

Arid

DOI	10.1016/j.quascirev.2021.106897
	Climatic and limnological changes 12,750 to 3600 years ago in the Issyk-Kul catchment, Tien Shan, based on palynology and stable isotopes
	Leroy, S. A. G.; Ricketts, R. D.; Rasmussen, K. A.
通讯作者	Leroy, SAG (corresponding author), Aix Marseille Univ, Mediterranean Lab Prehist Europa Africa, CNRS, Minist Culture,LAMPEA,UMR 7269, 5 Rue Chateau Horloge, F-13094 Aix En Provence, France.
来源期刊	QUATERNARY SCIENCE REVIEWS
ISSN	0277-3791
EISSN	1873-457X
出版年	2021
卷号	259
英文摘要	Arid Central Asia is at the border between the prevailing Westerlies and monsoonal climates. Lake Issyk-Kul, a large mountain lake, and its sediment record are key to reconstructing complex interactions between these two major climatic systems over time. We present for the first time sedimentological (magnetic susceptibility, CaCO3, delta C-13 and delta O-18 values of benthic ostracods and fine-grain carbonates) and palynological investigations of a sequence covering the last 12,750 years, with additionally some proxies at a lower resolution above 3590 years ago. From 12,750 until 10,000 years ago, vegetation reflects desert to semi-desert conditions around the lake. Soil erosion is intensive as reconstructed from high Glomus percentages and high magnetic susceptibility. The values of fine-grain carbonate delta O-18 are very negative. This is explained by intensive glacial meltwater runoff from surrounding mountain tops and slopes. Negative delta C-13 values of carbonates reflect the presence of C3 plants near the glacial edge, such as Kobresia sedges. From 10,000 to c. 6500 years ago, the increase of the Artemisia steppe occurring at the same time as an increasingly positive trend in fine-grained carbonate delta O-18 values are apparently contradictory. This is interpreted by a Westerly trend (increasing humidity) at the altitude of the lake (1607 m) and a monsoonal trend (increasingly dry) at the elevation of the glaciated mountain tops (a reconciliation hypothesis developed for multiple sites, illustrated here within one site only). Whereas the steppe is widespread around the lake, the fine-grain carbonates are precipitated from surface waters strongly influenced by meltwater having spilled down the surrounding mountains that are >2 km higher. Additionally after low lake levels until 10,000 years ago, our data suggest a lake level rise between 10,000 and 8000 years ago. (C) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Mountain lake Isotopes Younger Dryas Holocene Glaciers Westerlies Monsoon
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000644423800004
WOS关键词	HOLOCENE MOISTURE EVOLUTION ; TERSKEY-ALATOO RANGE ; CENTRAL TIAN-SHAN ; CENTRAL-ASIA ; YILI VALLEY ; LAKE REGION ; ARAL SEA ; KYRGYZSTAN ; OXYGEN ; WATER
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351458
作者单位	[Leroy, S. A. G.] Aix Marseille Univ, Mediterranean Lab Prehist Europa Africa, CNRS, Minist Culture,LAMPEA,UMR 7269, 5 Rue Chateau Horloge, F-13094 Aix En Provence, France; [Leroy, S. A. G.] Univ Liverpool, Sch Environm Sci, Liverpool, Merseyside, England; [Ricketts, R. D.] Univ Minnesota, Large Lakes Observ, 2205,E 5th St, Duluth, MN 55812 USA; [Rasmussen, K. A.] Northern Virginia Community Coll, 8333 Little River Turnpike, Annandale, VA 22003 USA
推荐引用方式 GB/T 7714	Leroy, S. A. G.,Ricketts, R. D.,Rasmussen, K. A.. Climatic and limnological changes 12,750 to 3600 years ago in the Issyk-Kul catchment, Tien Shan, based on palynology and stable isotopes[J],2021,259.
APA	Leroy, S. A. G.,Ricketts, R. D.,&Rasmussen, K. A..(2021).Climatic and limnological changes 12,750 to 3600 years ago in the Issyk-Kul catchment, Tien Shan, based on palynology and stable isotopes.QUATERNARY SCIENCE REVIEWS,259.
MLA	Leroy, S. A. G.,et al."Climatic and limnological changes 12,750 to 3600 years ago in the Issyk-Kul catchment, Tien Shan, based on palynology and stable isotopes".QUATERNARY SCIENCE REVIEWS 259(2021).