Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes

doi:10.1016/j.scitotenv.2020.139721

IEECAS OpenIR > 生态环境研究室

	Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes
	Kou, Pinglang 1; Xu, Qiang 1; Yunus, Ali P.1; Dong, Xiujun 1; Pu, Chuanhao 1; Zhang, Xiaochao 1; Jin, Zhao 2,3
通讯作者	Xu, Qiang(xuqiang_sklgp@163.com)
	2020-10-01
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	737 页码:11
摘要	Due to urban expansion and the rapid development of infrastructure in the loess area of China, artificial earth-fill embankments and excavated slopes are increasingly widespread in recent years. Erosion is typical in such loess slopes; however, quantitative statistical analyses of various counter-measures that affects rill erosion are still lacking. Here, we quantified rill morphology and rill erosion development in two newly constructed slopes with different engineering protection measures. We used high-resolution digital surface models (DSMs) acquired using an Unmanned Aerial Vehicle (UAV) to analyze the case areas during two-time periods. Our results from centimeter accuracy differential DSMs demonstrated that rapid rill erosion is prevalent in the study area, expressed as rill density varying between 2.03 km(-2) and 8.81 km(-2) at different slope surfaces (viz., erosion protected slopes [EPS], landslide protected slopes [LPS], and unprotected slopes [US]). The slope gradient responsible for rill erosion of the EPS, LPS and US are obviously different, and such information is essential for planning preventive measures in each slope type. At the EPS, the severity of erosion is maximum at the top of the ridges, whereas the gap between reinforced concrete lattice and loess deposits are of serious concern at the LPS. The current engineering measures employed in the study area are thus found ineffective for protection against rill erosion. We therefore propose an improved design by implementing an intercepting drain to the existing design for preventing further erosion. (c) 2020 Elsevier B.V. All rights reserved.
关键词	Rill erosion UAV Overland flow Drainage ditch Loess plateau
DOI	10.1016/j.scitotenv.2020.139721
关键词[WOS]	EPHEMERAL GULLY EROSION ; SOIL-EROSION ; INTERRILL EROSION ; PLATEAU ; SIMULATION ; SLOPE ; MODEL ; FIELD ; AREA ; LANDSLIDES
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of ChinaG[41790445] ; National Natural Science Foundation of ChinaG[41790444] ; Provincial Key R&D Program of Sichuan Ministry of Science and Technology[2019YFS0074] ; Key Program of National Natural Science Foundation of China[41630640] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40020301]
WOS研究方向	Environmental Sciences & Ecology
项目资助者	National Natural Science Foundation of ChinaG ; Provincial Key R&D Program of Sichuan Ministry of Science and Technology ; Key Program of National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences
WOS类目	Environmental Sciences
WOS记录号	WOS:000553708300005
出版者	ELSEVIER
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15127
专题	生态环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Xu, Qiang
作者单位	1.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Kou, Pinglang,Xu, Qiang,Yunus, Ali P.,et al. Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,737:11.
APA	Kou, Pinglang.,Xu, Qiang.,Yunus, Ali P..,Dong, Xiujun.,Pu, Chuanhao.,...&Jin, Zhao.(2020).Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes.SCIENCE OF THE TOTAL ENVIRONMENT,737,11.
MLA	Kou, Pinglang,et al."Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes".SCIENCE OF THE TOTAL ENVIRONMENT 737(2020):11.