干旱区生态环境知识资源中心(Arid): The relationship between environmental factors and magnetic susceptibility in the Ili loess, Tianshan Mountains, Central Asia

Arid

DOI	10.1002/gj.3182
	The relationship between environmental factors and magnetic susceptibility in the Ili loess, Tianshan Mountains, Central Asia
	Zeng, Mengxiu 1; Song, Yougui 2,4; Li, Yue 2; Fu, Chaofeng 3; Qiang, Xiaoke 2; Chang, Hong 2; Zhu, Lidong 1; Zhang, Zhiping 5; Cheng, Liangqing 2
通讯作者	Zeng, Mengxiu ; Song, Yougui
来源期刊	GEOLOGICAL JOURNAL
ISSN	0072-1050
EISSN	1099-1034
出版年	2019
卷号	54 期号:4 页码:1889-1901
英文摘要	The mechanisms of the magnetic susceptibility (MS) enhancement of loess from Arid Central Asia (ACA) have received much attention recently. Consensus varies about factors controlling the magnetic properties as well as the environmental implications, and much effort needs to be gone into how surface processes affect the MS. In this study, we collected 214 topsoil, near-surface loess, and fluvial sediment samples covering different elevations, climatic conditions, and vegetation from the Ili Valley in eastern ACA and analysed their magnetic properties and composition to investigate the factors influencing MS. Redundancy analysis (RDA) was employed to assess the relationship between environmental indicators and environmental factors. Our results show that (a) the concentration of pedogenic magnetic particles in the Ili loess and topsoils is limited. chi(lf) is higher in loess but lower in paleosol, mainly attributable to changes in wind intensity; (b) the mean chi(fd), chi(fd)%, and chi(lf) values of topsoil are lower in the desert steppe and forest-meadow zones, but highest in the montane steppe zone, and are not positively associated with vegetation coverage and the intensity of pedogenic processes; and (c) elevation exerts the most important impact on topsoil chi(fd) and chi(fd)%, while chi(lf) is influenced more by temperature than precipitation. (d) The magnetic enhancement could be mainly attributed to wind velocity; we also should consider elevation and other factors such as local material, climatic conditions, and distance to the dust source when interpreting the paleoclimatic or paleoenvironmental significance of magnetic parameters.
英文关键词	Arid Central Asia controlling factors elevation Ili loess magnetic susceptibility vegetation
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000477016000005
WOS关键词	LATE QUATERNARY LOESS ; ARID CENTRAL-ASIA ; CHINESE LOESS ; PALEOSOL SEQUENCES ; GRAIN-SIZE ; QUARTZ OSL ; BASIN ; CLIMATE ; XINJIANG ; RECORDS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
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/2XILL650/215959
作者单位	1.Zhejiang Normal Univ, Coll Geog & Environm Sci, Jinhua 321004, Zhejiang, Peoples R China; 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Shaanxi, Peoples R China; 3.Changan Univ, Key Lab Western Mineral Resources & Geol Engn, Minist Educ China, Xian, Shaanxi, Peoples R China; 4.CAS Res Ctr Ecol & Environm Cent Asia, Urumqi, Peoples R China; 5.Environm Monitoring Stn Ili Kazakh Autonomous Pre, Yining, Peoples R China
推荐引用方式 GB/T 7714	Zeng, Mengxiu,Song, Yougui,Li, Yue,et al. The relationship between environmental factors and magnetic susceptibility in the Ili loess, Tianshan Mountains, Central Asia[J]. 中国科学院地球环境研究所,2019,54(4):1889-1901.
APA	Zeng, Mengxiu.,Song, Yougui.,Li, Yue.,Fu, Chaofeng.,Qiang, Xiaoke.,...&Cheng, Liangqing.(2019).The relationship between environmental factors and magnetic susceptibility in the Ili loess, Tianshan Mountains, Central Asia.GEOLOGICAL JOURNAL,54(4),1889-1901.
MLA	Zeng, Mengxiu,et al."The relationship between environmental factors and magnetic susceptibility in the Ili loess, Tianshan Mountains, Central Asia".GEOLOGICAL JOURNAL 54.4(2019):1889-1901.