Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance

doi:10.1016/j.palaeo.2020.109890

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	Terrestrial mollusk records in the loess sequences from eastern Central Asia since the last deglaciation and their paleoenvironmental significance
	Zong, Xiulan 1,3; Dong, Jibao 1,2; Cheng, Peng 1,2; Song, Yougui1,2 ; Liu, Weiguo 1,2; Li, Yue 1,3; Lan, Jianghu1,2
通讯作者	Dong, Jibao(djb@ieecas.cn)
	2020-10-15
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	556 页码:9
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.
关键词	Westerlies Asia The Ili Basin Holocene Moisture Carbon isotopes
DOI	10.1016/j.palaeo.2020.109890
关键词[WOS]	ARID CENTRAL-ASIA ; HOLOCENE MOISTURE EVOLUTION ; CARBON ISOTOPIC COMPOSITION ; WINTER-SPRING PRECIPITATION ; CLIMATE-CHANGE ; VEGETATION CHANGES ; NORTHERN XINJIANG ; ALTAI MOUNTAINS ; ORGANIC-MATTER ; BASIN XINJIANG
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41977385] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Key Research and Development Program of China[2016YFA0601902] ; 2nd Tibetan Plateau Scientific Expedition and Research[2019QZKK0101]
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; 2nd Tibetan Plateau Scientific Expedition and Research
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000561370700023
出版者	ELSEVIER
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15207
专题	加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	Dong, Jibao
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.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]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,556:9.
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,556,9.
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):9.