干旱区生态环境知识资源中心(Arid): Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China

Arid

DOI	10.2343/geochemj.2.0636
	Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China
	Niu, Dongfeng; Si, Yuejun; Li, Baosheng; Wang, Fengnian; Shu, Peixian; Wen, Xiaohao; Guo, Yihua; Wang, Chen
通讯作者	Si, YJ (corresponding author), Nanning Normal Univ, Nanning 530001, Guangxi, Peoples R China.
来源期刊	GEOCHEMICAL JOURNAL
ISSN	0016-7002
EISSN	1880-5973
出版年	2021
卷号	55 期号:4 页码:265-276
英文摘要	The MGS1 segment of the Milanggouwan stratigraphic section, which is located on the southeastern margin of the Mu Us Desert in China, recorded 11 sedimentary cycles consisting of aeolian dune sands overlapping with fluvio-lacustrine facies or paleosols in the Holocene. Through the analysis of trace elements, gastropods, and sporopollen fossils in some layers of the MGS1, this study presents the monsoon climate fluctuations on the millennial-scale in the Mu Us Desert during the Holocene. The results show that the contents of trace elements (P, Pb, Rb, Nb, Zr, V, Sr, Cu, Ni, As, B a, and Co) have similar distribution characteristic, their contents are low in the dune sands but are relatively high in the overlying fluvio-lacustrine facies or paleosols showing 11 cycles in alternation of valleys and peaks. The trace elements in the paleo-mobile dune sands of MGS1 are quite consistent with those of modern mobile dune sands in Salawusu River Valley; therefore, paleo-mobile dune sands can be assumed to be a result of the main periods of the prevalence of East Asian winter monsoon. The increased element contents in the overlying fluvio-lacustrine facies or paleosols are mainly due to the prevailing East Asian summer monsoon. In addition, the 11 elements' cycles represent the climate changes on the millennial-scale in the alternation of East Asian winter and summer monsoons in the Holocene. The paleoecology indicated by gastropods and sporopollen fossils reflects the warm and humid sparse forest grassland environment prevailing in the East Asian summer monsoon when the fluvio-lacustrine facies were deposited; the sporopollen is missing in the dune sands, presumably, it might be dry and windy sandy desert then. The dominant periods of the winter monsoon in these cycles, in terms of time and nature of the climate, could correspond to the cold events in the North Atlantic and lakes, loess, peat and stalagmites in China. It probably indicates that the millennial-scale environmental changes in China's desert regions may be caused by the changes of solar radiation and the increase in ice volume in the Northern Hemisphere during the Holocene.
英文关键词	Holocene Mu Us desert trace elements paleontological evidence millennial-scale monsoon climate fluctuations
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000693113800007
WOS关键词	HUGUANGYAN MAAR LAKE ; ASIAN MONSOON ; ENVIRONMENTAL-CHANGES ; NORTHERN CHINA ; POLLEN RECORD ; PRECIPITATION ; EVOLUTION ; SEQUENCES ; SEDIMENTS ; EVENTS
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
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/2XILL650/363377
作者单位	[Niu, Dongfeng] Lingnan Normal Univ, Zhanjiang 524048, Guangdong, Peoples R China; [Si, Yuejun] Nanning Normal Univ, Nanning 530001, Guangxi, Peoples R China; [Li, Baosheng; Wen, Xiaohao; Wang, Chen] South China Normal Univ, Guangzhou 510631, Guangdong, Peoples R China; [Li, Baosheng; Shu, Peixian] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shanxi, Peoples R China; [Wang, Fengnian] Huizhou Univ, Huizhou 516001, Guangdong, Peoples R China; [Guo, Yihua] Guangzhou Inst Geog, Guangzhou 510070, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Niu, Dongfeng,Si, Yuejun,Li, Baosheng,et al. Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China[J]. 中国科学院地球环境研究所,2021,55(4):265-276.
APA	Niu, Dongfeng.,Si, Yuejun.,Li, Baosheng.,Wang, Fengnian.,Shu, Peixian.,...&Wang, Chen.(2021).Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China.GEOCHEMICAL JOURNAL,55(4),265-276.
MLA	Niu, Dongfeng,et al."Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China".GEOCHEMICAL JOURNAL 55.4(2021):265-276.