干旱区生态环境知识资源中心(Arid): Analysis of tsagaan lake sediment, valley of the gobi lakes, Mongolia, to determine past environmental changes and the effect of ongoing global warming

Arid

DOI	10.1016/j.quaint.2023.07.010
	Analysis of tsagaan lake sediment, valley of the gobi lakes, Mongolia, to determine past environmental changes and the effect of ongoing global warming
	Ganbat, Shuukhaaz; Hasebe, Noriko; Davaasuren, Davaadorj; Fukushi, Keisuki; Udaanjargal, Uyangaa; Ochiai, Shinya; Batbold, Chultem; Gankhurel, Baasansuren; Kitajima, Takuma; Shibuya, Yuma
通讯作者	Hasebe, N
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2023
卷号	670 页码:11-23
英文摘要	The arid region of Mongolia is sensitive to climate change. Understanding of climate variations in the past plays an important role in predicting further climate changes. In this study, we aim to investigate the relationship between the climatic factor and sedimentation history in the late Holocene. We analyzed the 18TS1 core sample (136 cm in length) from the Tsagaan lake in the Valley of the Gobi Lakes, Mongolia. The sediment core mainly consists of clay and silt sediments, occasionally interrupted by the sand-dominated layers. 210Pb dating method is applied and indicates that the upper 24 cm sediment spans the sedimentation history of the last 87 years. Along-core variations in sediment characteristics such as organic matter, carbonate, and amorphous silica abundance are indicative of the drought-inducing period based on the significant correlations between sediment charac-teristics and Self-calibrated Palmer Drought Severity Index. Moreover, the enrichment of carbonates is a great indicator of shallow lake conditions prior to the lake disappearance during the dry period. The chemical composition of sand-dominated units in the sediment core well agrees with that of sand sheets and sand dunes in the catchment. Modern expansion and migration of sand sheets are identified by aerial photo imagery. The insufficient sediment chronology is limiting our interpretation, though; the comparison with the other paleo-climate records helps the establishment of environmental changes in the last millennium.
英文关键词	Sediment 210 Pb dating Climate change Lake shrinkage Sedimentation changes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001099595100001
WOS关键词	BOON-TSAGAAN ; OROG-NUUR ; HOLOCENE ; AREA
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/2XILL650/398193
推荐引用方式 GB/T 7714	Ganbat, Shuukhaaz,Hasebe, Noriko,Davaasuren, Davaadorj,et al. Analysis of tsagaan lake sediment, valley of the gobi lakes, Mongolia, to determine past environmental changes and the effect of ongoing global warming[J],2023,670:11-23.
APA	Ganbat, Shuukhaaz.,Hasebe, Noriko.,Davaasuren, Davaadorj.,Fukushi, Keisuki.,Udaanjargal, Uyangaa.,...&Shibuya, Yuma.(2023).Analysis of tsagaan lake sediment, valley of the gobi lakes, Mongolia, to determine past environmental changes and the effect of ongoing global warming.QUATERNARY INTERNATIONAL,670,11-23.
MLA	Ganbat, Shuukhaaz,et al."Analysis of tsagaan lake sediment, valley of the gobi lakes, Mongolia, to determine past environmental changes and the effect of ongoing global warming".QUATERNARY INTERNATIONAL 670(2023):11-23.