干旱区生态环境知识资源中心(Arid): Characterization of the collapsible mechanisms of Malan loess on the Chinese Loess Plateau and their effects on eroded loess landforms

Arid

DOI	10.1080/10807039.2020.1721265
	Characterization of the collapsible mechanisms of Malan loess on the Chinese Loess Plateau and their effects on eroded loess landforms
	Wang, Li; Li, Xi-An; Li, Lin-Cui; Hong, Bo; Yao, Wang; Lei, Hao-nan; Zhang, Chen
通讯作者	Li, Xi-An
来源期刊	HUMAN AND ECOLOGICAL RISK ASSESSMENT
ISSN	1080-7039
EISSN	1549-7860
出版年	2020
卷号	26 期号:9 页码:2541-2566
英文摘要	Collapsible loess soils are widely distributed in semiarid and arid regions. The eroded landforms formed by the unique collapsibility of loess may cause environmental damage that puts lives and property at risk. In this work, the collapse potential, quantitative analyses, and qualitative characterization of the microstructures of loess samples were investigated using double oedometer tests, scanning electron microscopy (SEM), and the digital image analysis method to probe the fundamental mechanisms of loess collapsibility. A large number of field investigations have been carried out to study the role of loess collapsibility during the formation of eroded landforms. The results show that the collapse potential of loess first increases and then decreases in response to increasing vertical pressure. Loess from the different study regions exhibits different microstructure types. Loess collapse is mainly caused by the destruction of large and medium pores, although the contribution of the middle pores on the collapse is more significant. The microtopography formed by loess collapse is conducive to surface runoff concentration and infiltration. The eroded landforms resulting from loess collapse are categorized into four different models based on the catchment area and the discharge area. These results and analyses are important to land use planners and engineers and will aid in controlling and mitigating disaster-prone landforms.
英文关键词	loess microstructure collapse erosion landforms field investigations
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000512814900001
WOS关键词	QUALITY ASSESSMENT ; SHAANXI PROVINCE ; REMOLDED LOESS ; BEHAVIOR ; SOIL ; MICROSTRUCTURE ; GROUNDWATER ; LANDSLIDES ; AREA
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314672
作者单位	Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wang, Li,Li, Xi-An,Li, Lin-Cui,et al. Characterization of the collapsible mechanisms of Malan loess on the Chinese Loess Plateau and their effects on eroded loess landforms[J],2020,26(9):2541-2566.
APA	Wang, Li.,Li, Xi-An.,Li, Lin-Cui.,Hong, Bo.,Yao, Wang.,...&Zhang, Chen.(2020).Characterization of the collapsible mechanisms of Malan loess on the Chinese Loess Plateau and their effects on eroded loess landforms.HUMAN AND ECOLOGICAL RISK ASSESSMENT,26(9),2541-2566.
MLA	Wang, Li,et al."Characterization of the collapsible mechanisms of Malan loess on the Chinese Loess Plateau and their effects on eroded loess landforms".HUMAN AND ECOLOGICAL RISK ASSESSMENT 26.9(2020):2541-2566.