干旱区生态环境知识资源中心(Arid): Holocene Environmental Changes Inferred From an Aeolian-Palaeosol-Lacustrine Profile in the Mu Us Desert, Northern China

Arid

DOI	10.3389/feart.2021.799935
	Holocene Environmental Changes Inferred From an Aeolian-Palaeosol-Lacustrine Profile in the Mu Us Desert, Northern China
	Liu, Xiaokang; Lu, Ruijie; Ding, Zhiyong; Lyu, Zhiqiang; Li, Yijing; Dong, Zhibao
通讯作者	Lu, RJ (corresponding author)，Beijing Normal Univ, Fac Geog Sci, Minist Educ, Engn Ctr Desertificat & Blown Sand Control, Beijing, Peoples R China.
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2021
卷号	9
英文摘要	An excavated profile of aeolian-palaeosol-lacustrine sediments (the Wapianliang profile), located at the southeastern part of the Mu Us Desert, Northern China, was studied to reconstruct regional Holocene environmental changes. A chronology was established based on three AMS C-14 and two OSL dates, and variations in the lithology and grain size, magnetic susceptibility, soil micromorphology, and chemical elements were used to explore the regional depositional environments during the Holocene. The results showed that since around 14 ka BP, this region had experienced seven alternations of wetting and drying. A shallow lake, which was identified by celadon lacustrine sediments with sporadic freshwater gastropod fossils, occurred in this area from around 13.0 ka BP to 9.9 ka BP. There existed two obvious intervals of soil formation, inferred from the environmental proxies of the palaeosol/sandy palaeosol layers, with relatively fine average grain-size, high magnetic susceptibility value, remarkable pedogenesis features, and strong chemical weathering, in particular, a well-developed palaeosol layer dating from the middle Holocene (8.6 ka BP to 4.2 ka BP). A weakly-developed palaeosol layer (from around 1.2 ka BP) at the upper part of the profile is possibly an indication of the Medieval Warm Period. This implies a forest steppe environment at both of these sedimentary stages. After 0.9 ka BP, a desert environment returned, analogous to before around 13.0 +/- 1.4 ka BP, between 9.9 +/- 1.1 ka BP to 8.6 ka BP, and between 4.2 ka BP to 1.6 ka BP, indicating the aggravation of aeolian activity and the expansion of mobile sand dunes. The variations in sedimentary environments were mainly triggered by changes in the East Asian Summer Monsoon (EASM).
英文关键词	Mu Us Desert environmental changes Holocene sedimentary condition East Asian summer monsoon
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000760983200001
WOS关键词	MAGNETIC-SUSCEPTIBILITY ; INNER-MONGOLIA ; ASIAN MONSOON ; QINGHAI LAKE ; SANDY LAND ; CLIMATE ; EVOLUTION ; EAST ; OSL ; SEDIMENTS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375694
作者单位	[Liu, Xiaokang; Li, Yijing; Dong, Zhibao] Shaanxi Normal Univ, Sch Geog & Tourism, Xian, Peoples R China; [Liu, Xiaokang; Lu, Ruijie] Beijing Normal Univ, Fac Geog Sci, Minist Educ, Engn Ctr Desertificat & Blown Sand Control, Beijing, Peoples R China; [Ding, Zhiyong] Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu, Peoples R China; [Lyu, Zhiqiang] Catholic Univ Louvain, Georges Lemaitre Ctr Earth & Climate Res, Earth & Life Inst, Ottignies, Belgium; [Dong, Zhibao] Shaanxi Normal Univ, Planetary Aeolian Res Inst, Xian, Peoples R China
推荐引用方式 GB/T 7714	Liu, Xiaokang,Lu, Ruijie,Ding, Zhiyong,et al. Holocene Environmental Changes Inferred From an Aeolian-Palaeosol-Lacustrine Profile in the Mu Us Desert, Northern China[J],2021,9.
APA	Liu, Xiaokang,Lu, Ruijie,Ding, Zhiyong,Lyu, Zhiqiang,Li, Yijing,&Dong, Zhibao.(2021).Holocene Environmental Changes Inferred From an Aeolian-Palaeosol-Lacustrine Profile in the Mu Us Desert, Northern China.FRONTIERS IN EARTH SCIENCE,9.
MLA	Liu, Xiaokang,et al."Holocene Environmental Changes Inferred From an Aeolian-Palaeosol-Lacustrine Profile in the Mu Us Desert, Northern China".FRONTIERS IN EARTH SCIENCE 9(2021).