气候变化领域集成服务门户(CCPortal): A stable isotope record from freshwater lake shells of the eastern Tibetan Plateau, China, during the past two centuries

CCPortal

DOI	10.1080/03009480600923352
	A stable isotope record from freshwater lake shells of the eastern Tibetan Plateau, China, during the past two centuries
	Wu, Jinglu; Schleser, Gerhard Hans; Lucke, Andreas; Li, Shijie
发表日期	2007
ISSN	0300-9483
EISSN	1502-3885
起始页码	38
结束页码	46
卷号	36 期号:1
英文摘要	Lake Xingcuo is a small, closed, hardwater lake situated in the eastern Tibetan Plateau. Stable isotope data (delta O-18 and delta C-13) from the freshwater snail Gyraulus sibirica (Dunker) in a 34-cm-long, radioactive isotope-dated sediment core represent the past 200 years of Lake Xingcuo environmental history Carbon and oxygen isotope ratios in the shells of the snail yield information on the isotopic composition of the water in which the shell was formed, which in turn relates to climatic conditions prevailing during the snail's life-span. Living and fossil shells from Lake Xingcuo were collected. delta O-18 values in the living shells from Lake Xingcuo are in equilibrium with ambient waters, while delta C-13 values may trace snail dietary carbon. On comparing delta O-18 and delta C-13 in the shell of Gyraulus sibirica with monitored data for the period 1954-1995, we found that the delta O-18 composition in the shell is an efficient proxy revealing air temperature during the warmer months from April to September. There is a positive correlation between the delta O-18 in the shells of Gyraulus sibirica and the running average temperature of the warmer months. Climatic variability in the eastern Tibetan Plateau for the past two centuries has been inferred from the delta O-18 record from the freshwater snails in the sediments of Lake Xingcuo. As such, the last 200 years' palacoclimatic record for this region can be separated into three periods representing oscillations between warm and cool conditions consistent with the Guliya ice record in the Tibetan Plateau.
关键词	LAND SNAIL SHELLS OXYGEN CARBON O-18 KA PRECIPITATION RATIOS REGION ERIE C-13
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000244148600003
来源期刊	BOREAS
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/257479
推荐引用方式 GB/T 7714	Wu, Jinglu,Schleser, Gerhard Hans,Lucke, Andreas,et al. A stable isotope record from freshwater lake shells of the eastern Tibetan Plateau, China, during the past two centuries[J]. 中国科学院青藏高原研究所,2007,36(1).
APA	Wu, Jinglu,Schleser, Gerhard Hans,Lucke, Andreas,&Li, Shijie.(2007).A stable isotope record from freshwater lake shells of the eastern Tibetan Plateau, China, during the past two centuries.BOREAS,36(1).
MLA	Wu, Jinglu,et al."A stable isotope record from freshwater lake shells of the eastern Tibetan Plateau, China, during the past two centuries".BOREAS 36.1(2007).