干旱区生态环境知识资源中心(Arid): Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance

Arid

DOI	10.1016/j.palaeo.2020.109890
	Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance
	Zong, Xiulan; Dong, Jibao; Cheng, Peng; Song, Yougui; Liu, Weiguo; Li, Yue; Lan, Jianghu
通讯作者	Dong, JB
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2020
卷号	556
英文摘要	A variety of proxies has been studied to document paleoclimatic changes in arid Central Asia (ACA). However, biological archives, which can be directly related to climatic conditions, are still scarce in this region. Here we report records of the total count fossils (TCF) of terrestrial mollusks, organic carbon isotopes (delta C-13(org)) and loss on ignition (LOI), since the last deglaciation in the Talede and XRBLK loess sections in Xinjiang, eastern Central Asia. Prior to the Holocene, the records show rare fossils with relatively low LOI and more positive delta C-13(org), indicating low biomass/organic carbon content under dry conditions which were unfavorable for the survival of snails. In contrast, TCF increased abruptly at the beginning of Holocene, coincident with a prominent increase in LOI and a marked negative shift in delta C-13(org). Furthermore, TCF increased gradually to its maximum and delta C-13(org) became progressively negative with constant high LOI from the early to late Holocene. The variations imply a trend towards wetter environment, with optimal moisture (precipitation/relative humidity) conditions occurring in the late Holocene. Overall, this Holocene moisture evolution history could be attributed to the variations of Westerlies strength modulated by the latitudinal temperature gradient and the insolation-related evaporation should also be concerned.
英文关键词	Westerlies Asia The Ili Basin Holocene Moisture Carbon isotopes
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000561370700023
WOS关键词	ARID CENTRAL-ASIA ; HOLOCENE MOISTURE EVOLUTION ; CARBON ISOTOPIC COMPOSITION ; WINTER-SPRING PRECIPITATION ; CLIMATE-CHANGE ; VEGETATION CHANGES ; NORTHERN XINJIANG ; ALTAI MOUNTAINS ; ORGANIC-MATTER ; BASIN XINJIANG
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
来源机构	中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325741
作者单位	[Zong, Xiulan; Dong, Jibao; Cheng, Peng; Song, Yougui; Liu, Weiguo; Li, Yue; Lan, Jianghu] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; [Dong, Jibao; Cheng, Peng; Song, Yougui; Liu, Weiguo; Lan, Jianghu] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China; [Zong, Xiulan; Li, Yue] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zong, Xiulan,Dong, Jibao,Cheng, Peng,et al. Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance[J]. 中国科学院地球环境研究所,2020,556.
APA	Zong, Xiulan.,Dong, Jibao.,Cheng, Peng.,Song, Yougui.,Liu, Weiguo.,...&Lan, Jianghu.(2020).Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,556.
MLA	Zong, Xiulan,et al."Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 556(2020).