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Sensitivity of rainstorm-triggered shallow mass movements on gully slopes to topographical factors on the Chinese Loess Plateau
Guo, Wen-Zhao1,2; Luo, Li3; Wang, Wen-Long1,2; Liu, Zhen-Yi3; Chen, Zhuo-Xin1; Kang, Hong-Liang1; Yang, Bo1
2019-07-15
Source PublicationGEOMORPHOLOGY
ISSN0169-555X
Volume337Pages:69-78
Corresponding AuthorWang, Wen-Long(nwafu_wwl@163.com)
AbstractTopographical factor is one of the most important factors in understanding the formation mechanism of shallow mass movements on gully slopes on the Loess Plateau, China. However, the sensitivity of shallow mass movements on gully slopes to topography is poorly understood. Here, a series of rainfall simulation experiments was performed to quantitatively explore the influences of slope height (1.0 and 1.5 m) and gradient (60 degrees and 70 degrees) on shallow mass movements on the natural loess slopes on the Loess Plateau. Our research observed shallow mass movement processes on undisturbed slopes by using a Topography Meter and collected data that well reflected the nature of the processes. The conducted study has advantageous over traditional methods that are usually used in laboratory tests of backfilled soil. Results showed that the amount of shallow mass movement increased with increased slope height and gradient. The shallow mass movement rates (i.e., gravity erosion rates) increased by approximately 3-8 times with increased slope height from 1.0 m to 1.5 m, and increased by 148%-525% with increased slope gradient from 60 degrees to 70 degrees. The sensitivity coefficient of slope gradients for shallow mass movements was 2.1 times larger than that of slope heights for the shallow mass movements. Slope heights had the greatest effect on earthflow relative to slide and avalanche, whereas slope gradients had the greatest effect on slide. Our results provided insights into natural hazard susceptibility assessment and control erosion processes. (C) 2019 Elsevier B.V. All rights reserved.
KeywordShallow mass movement Erosion Gully slopes Chinese Loess Plateau Rainfall simulation experiments
DOI10.1016/j.geomorph.2019.04.006
WOS KeywordLANDSLIDE OCCURRENCE ; EROSION ; CATCHMENT ; FREQUENCY ; TERRAIN ; SLIDES ; ISLAND ; MODEL ; STEEP ; GIS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51879032] ; National Natural Science Foundation of China[41571275] ; Young Scholar B Project of the Western light of the Chinese Academy of Sciences[XAB2018B07] ; National Key RD Project[2016YFC0402504] ; Doctoral Startup Fund of Northwest Agriculture and Forestry University[Z109021806]
Funding OrganizationNational Natural Science Foundation of China ; Young Scholar B Project of the Western light of the Chinese Academy of Sciences ; National Key RD Project ; Doctoral Startup Fund of Northwest Agriculture and Forestry University
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000470048500005
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/59094
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Wen-Long
Affiliation1.Northwest A&F Univ, Inst Water & Soil Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
3.Dalian Univ Technol, Sch Hydraul Engn, Dalian 116024, Peoples R China
Recommended Citation
GB/T 7714
Guo, Wen-Zhao,Luo, Li,Wang, Wen-Long,et al. Sensitivity of rainstorm-triggered shallow mass movements on gully slopes to topographical factors on the Chinese Loess Plateau[J]. GEOMORPHOLOGY,2019,337:69-78.
APA Guo, Wen-Zhao.,Luo, Li.,Wang, Wen-Long.,Liu, Zhen-Yi.,Chen, Zhuo-Xin.,...&Yang, Bo.(2019).Sensitivity of rainstorm-triggered shallow mass movements on gully slopes to topographical factors on the Chinese Loess Plateau.GEOMORPHOLOGY,337,69-78.
MLA Guo, Wen-Zhao,et al."Sensitivity of rainstorm-triggered shallow mass movements on gully slopes to topographical factors on the Chinese Loess Plateau".GEOMORPHOLOGY 337(2019):69-78.
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