干旱区生态环境知识资源中心(Arid): Grain-size characteristics of surface sediments of nebkhas at the southern margin of the Mu Us dune field, China

Arid

DOI	10.1016/j.catena.2019.104210
	Grain-size characteristics of surface sediments of nebkhas at the southern margin of the Mu Us dune field, China
	Li, Jinchang 1; Yao, Qi 1; Wang, Yuan 1; Liu, Rentao 2; Zhang, Hong 3
通讯作者	Li, Jinchang
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2019
卷号	183
英文摘要	The grain-size characteristics of nebkhas are considered to differ from those of mobile dunes in relation to differences in vegetation influences. However, minimal research has been conducted in this respect. Therefore, this study investigates the grain-size characteristics of surface sediments of a nebkha field with 50%-80% vegetation cover at the southern margin of the Mu Us dune field. The grain-size composition and parameters were determined at different positions on nebkhas and in interdune areas. The results indicate that the nebkha sediments were significantly finer than those of mobile dunes, had weaker sorting, and were more positively skewed and more leptokurtic in relation to the interception of fine particles by vegetation, associated prevention of movement, and pedogenesis. We infer that the influence of pedogenesis resulted in minimal differences between grain-size compositions and parameters in samples obtained from different positions on nebkhas, between nebkhas, and in interdune areas. The creep populations of interdune sediments can be transported to the windward toe, but further transportation along the windward slope of a nebkha to the crest or leeward slope is limited because of vegetation interception.
英文关键词	Nebkha Interdune Grain size Vegetation Sediments transport
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000488417700033
WOS关键词	LINEAR DUNES ; DESERT ; SOUTHWESTERN ; VEGETATION ; ENVIRONMENTS ; DEPOSITS ; BASIN
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
EI主题词	2019-12-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311368
作者单位	1.Shanxi Univ, Inst Loess Plateau, Taiyuan 030006, Shanxi, Peoples R China; 2.Ningxia Univ, Key Lab Restorat & Reconstruct Degraded Ecosyst N, Minist Educ, Yinchuan 750021, Peoples R China; 3.Shanxi Univ, Coll Environm & Resource Sci, Taiyuan 030006, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Li, Jinchang,Yao, Qi,Wang, Yuan,et al. Grain-size characteristics of surface sediments of nebkhas at the southern margin of the Mu Us dune field, China[J],2019,183.
APA	Li, Jinchang,Yao, Qi,Wang, Yuan,Liu, Rentao,&Zhang, Hong.(2019).Grain-size characteristics of surface sediments of nebkhas at the southern margin of the Mu Us dune field, China.CATENA,183.
MLA	Li, Jinchang,et al."Grain-size characteristics of surface sediments of nebkhas at the southern margin of the Mu Us dune field, China".CATENA 183(2019).