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Micro-topographic assessment of rill morphology highlights the shortcomings of current protective measures in loess landscapes
Kou, Pinglang1; Xu, Qiang1; Yunus, Ali P.1; Dong, Xiujun1; Pu, Chuanhao1; Zhang, Xiaochao1; Jin, Zhao2,3
Corresponding AuthorXu, Qiang(xuqiang_sklgp@163.com)
2020-10-01
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume737Pages:11
AbstractDue 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.
KeywordRill erosion UAV Overland flow Drainage ditch Loess plateau
DOI10.1016/j.scitotenv.2020.139721
WOS KeywordEPHEMERAL GULLY EROSION ; SOIL-EROSION ; INTERRILL EROSION ; PLATEAU ; SIMULATION ; SLOPE ; MODEL ; FIELD ; AREA ; LANDSLIDES
Indexed BySCI ; SCI
Language英语
Funding ProjectNational 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 Research AreaEnvironmental Sciences & Ecology
Funding OrganizationNational 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 SubjectEnvironmental Sciences
WOS IDWOS:000553708300005
PublisherELSEVIER
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/15127
Collection生态环境研究室
第四纪科学与全球变化卓越创新中心
Corresponding AuthorXu, Qiang
Affiliation1.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
Recommended Citation
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.
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