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DOI	10.1016/j.catena.2021.105503
	Surface roughness effects on soil loss rate in complex hillslopes under laboratory conditions
	Mombini, Ava; Amanian, Nosratollah; Talebi, Ali; Kiani-Harchegani, Mahboobeh; Rodrigo-Comino, Jesus
通讯作者	Amanian, N (corresponding author), Yazd Univ, Fac Engn, Dept Civil Engn, Yazd, Iran. ; Kiani-Harchegani, M (corresponding author), Yazd Univ, Fac Nat Resources, Dept Watershed Management, Yazd, Iran.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	206
英文摘要	Factors involved in hillslope geometry and soil erosion are still under discussion by the scientific community- and one of these factors is microtopography. In this research, the effect of surface roughness (SR) on the soil loss was investigated for different complex hillslope (CHS) systems in terms of plan shapes (convergent, parallel, and divergent) and profile curvatures (convex, concave, and straight), considering representative surface conditions of the arid steep slope region of Tahoneh Watershed, located close to the city of Yazd, Iran. The current research was conducted under laboratory conditions on three different soil types with an SR of 0.015, 0.016, and 0.018 and using a rainfall simulator under a rainfall intensity of 26 +/- 3 mm/h with a duration of 15 min. The results showed that the soil loss, as well as the sediment's arrival time into the outlet of each complex hillslope, varied with SR changes. S, oil loss decreased in each CHS, and the sediment's arrival time into the outlet was delayed with increased SR in the soil types. A significant difference (F = 51.648, P = 0.001) was obtained in the interaction between the SR and CHSs on the soil loss, as well as the sediment's arrival time into the outlet. The results of this study using these specific soils indicate that the highest soil loss reduction due to the SR can be observed in straight parallel hillslopes. We conclude that our results can give new key insights about complex geomorphological processes related to sediment mobilization at the pedon scale in arid watersheds to mitigate the negative impacts of human activities on non-straight parallel hillslopes.
英文关键词	Hillslope geometry Rainfall-runoff processes Soil erosion Microtopography
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000688449100025
WOS关键词	DIFFERENT RAINFALL INTENSITIES ; EROSION PROCESSES ; SIZE DISTRIBUTION ; INTERRILL EROSION ; RUNOFF ; SEDIMENT ; SLOPE ; FLOW ; COEFFICIENT ; GRADIENTS
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/2XILL650/368252
作者单位	[Mombini, Ava; Amanian, Nosratollah] Yazd Univ, Fac Engn, Dept Civil Engn, Yazd, Iran; [Talebi, Ali; Kiani-Harchegani, Mahboobeh] Yazd Univ, Fac Nat Resources, Dept Watershed Management, Yazd, Iran; [Rodrigo-Comino, Jesus] Univ Granada, Fac Filosea & Letras, Dept Anal Geograif Reg & Geog Fis, Campus Univ Cartuja, Granada 18071, Spain; [Rodrigo-Comino, Jesus] Univ Trier, Dept Phys Geog, D-54296 Trier, Germany
推荐引用方式 GB/T 7714	Mombini, Ava,Amanian, Nosratollah,Talebi, Ali,et al. Surface roughness effects on soil loss rate in complex hillslopes under laboratory conditions[J],2021,206.
APA	Mombini, Ava,Amanian, Nosratollah,Talebi, Ali,Kiani-Harchegani, Mahboobeh,&Rodrigo-Comino, Jesus.(2021).Surface roughness effects on soil loss rate in complex hillslopes under laboratory conditions.CATENA,206.
MLA	Mombini, Ava,et al."Surface roughness effects on soil loss rate in complex hillslopes under laboratory conditions".CATENA 206(2021).