干旱区生态环境知识资源中心(Arid): 中全新世以来查干淖尔古湖面波动

Arid

	中全新世以来查干淖尔古湖面波动
其他题名	Mid Holocene Paleolake Fluctuation of the Qehan Lake,Inner Mongolia,China
	刘美萍; 哈斯
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2015
卷号	35 期号:2 页码:306-312
中文摘要	内陆湖泊水位变化是对区域气候和水文变化的一种响应,古湖岸堤是过去湖泊水位变化的最直接证据。野外考察发现内蒙古高原查干淖尔湖周围存在海拔为1 026、1 023m和1 018m的3级古湖岸堤。根据光释光定年,其形成年代分别是6.830.37、4.260.29ka BP和2.420.15ka BP。利用DEM模型恢复得到的对应时期古湖面积分别是270、230km2和120km2。在6.83~4.26ka BP时段,查干淖尔古湖高湖面稳定在1 023~1 026m,比现代湖面约高7m,该时段气候相对湿润,4.26ka BP以来湖面持续下降,与区域性甚至全球性气候变化有着深刻的关系。
英文摘要	Inland lake level changes are extremely sensitive to regional climate and hydrology change,and ancient shorelines are the most direct evidence of lake level changes.Through the field investigation,we found that there were three lake shorelines with elevation 1 026,1 023 m and 1 018 m around the modern Qehan Lake in Inner Mongolia and the OSL dating results of them were 6.830.37,4.260.29 ka BP and 2.420.15 ka BP,respectively,and the paleo lake area were about 270,230 km2 and 120 km2,respectively. The high lake level of Qehan paleo lake stand on 1 023-1 026 m in 6.83-4.26 ka BP,about 8 meters higher than modern,the climate condition then was rather humid.The overall lake fluctuation since Mid- Holocene of Qehan paleo lake was downward and the variation was almost identical to those adjacent lakes inthe arid and semi-arid area.It showed that the Mid-Holocene environmental changes of the Qehan Lake had a profound relationship with the regional and even global climate changing.
中文关键词	全新世 ; 查干淖尔湖泊 ; 湖面波动 ; 环境演化
英文关键词	Holocene Qehan Lake lake fluctuation environmental changes
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:5372600
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/233732
作者单位	北京师范大学资源学院, 北京 100875, 中国
推荐引用方式 GB/T 7714	刘美萍,哈斯. 中全新世以来查干淖尔古湖面波动[J]. 北京师范大学,2015,35(2):306-312.
APA	刘美萍,&哈斯.(2015).中全新世以来查干淖尔古湖面波动.中国沙漠,35(2),306-312.
MLA	刘美萍,et al."中全新世以来查干淖尔古湖面波动".中国沙漠 35.2(2015):306-312.