干旱区生态环境知识资源中心(Arid): Quantitative estimates of Holocene precipitation from aeolian sand-palaeosol sequences across the Ordos Plateau, northern China, based on surface soil geochemistry

Arid

DOI	10.1016/j.catena.2023.107232
	Quantitative estimates of Holocene precipitation from aeolian sand-palaeosol sequences across the Ordos Plateau, northern China, based on surface soil geochemistry
	Liu, Bing; Zhao, Hui; Jin, Heling; Liang, Aimin; Sun, Aijun; Zhang, Xiaomei; Zhang, Caixia; Jin, Jianhui; Yang, Hongyu; Li, Sen
通讯作者	Zhao, H
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2023
卷号	229
英文摘要	Quantitative precipitation reconstructions are important for studies of past Earth surface processes and for predicting future trends, especially in the semi-arid region of northern China, where the dune fields landscape is dominated by shifts of the Asian summer monsoonal boundary. However, the relationships between desert de-posits and climatic factors are controversial and it remains unclear how these relationships can be used for quantitative paleoenvironmental reconstruction. We investigated the relationship between the degree of chemical weathering of surface soil, quantified using the Chemical Index of Alteration (CIA) and modern climatic variables, along transects across the Ordos Plateau. The relationship was then used to obtain quantitative esti-mates of Holocene mean annual precipitation (MAP) from aeolian sand-palaeosol sequences in this region. The results reveal that MAP is the dominant climatic variable controlling the chemical weathering of surface soil, accounting for -69-91% of the total explained variance. This robust relationship enabled us to establish a regional CIA-based transfer function to reconstruct the MAP. This relationship was confirmed by a study of Holocene climate change and chemical weathering of aeolian sequences across the Ordos Plateau, which indi-cated that paleo-precipitation explained -76-88% of the total explained variance. The reconstruction dem-onstrates that the MAP was respectively -60-103 mm and -21-63 mm lower in the early and late Holocene than the modern MAP, while it was -34-77 mm (-20-30%) higher in the middle Holocene than the modern MAP. Our results also demonstrate the latitudinal zonality of MAP evolution across the Ordos Plateau during the mid-Holocene. Overall, our findings provide new insights into the chemical weathering of surface soils and the response of Holocene aeolian deposits to climate change, and they confirm the utility of a geochemical proxy for quantitative environmental reconstruction in the semi-arid desert region of northern China.
英文关键词	Chemical weathering Quantitative climatic reconstruction Aeolian sand-palaeosol sequences Holocene Ordos Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001007119200001
WOS关键词	MU US DESERT ; PAST ENVIRONMENTAL-CONDITIONS ; CHEMICAL-WEATHERING RATES ; LAST GLACIAL MAXIMUM ; INNER-MONGOLIA ; POLLEN RECORD ; VEGETATION CHANGES ; MAJOR ELEMENTS ; ALTERATION CIA ; LOESS PROFILE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395690
推荐引用方式 GB/T 7714	Liu, Bing,Zhao, Hui,Jin, Heling,et al. Quantitative estimates of Holocene precipitation from aeolian sand-palaeosol sequences across the Ordos Plateau, northern China, based on surface soil geochemistry[J],2023,229.
APA	Liu, Bing.,Zhao, Hui.,Jin, Heling.,Liang, Aimin.,Sun, Aijun.,...&Li, Sen.(2023).Quantitative estimates of Holocene precipitation from aeolian sand-palaeosol sequences across the Ordos Plateau, northern China, based on surface soil geochemistry.CATENA,229.
MLA	Liu, Bing,et al."Quantitative estimates of Holocene precipitation from aeolian sand-palaeosol sequences across the Ordos Plateau, northern China, based on surface soil geochemistry".CATENA 229(2023).