Assessment of landslide susceptibility using GIS-based evidential belief function in Patu Khola watershed, Dang, Nepal | |
Regmi, Amar Deep1,2; Poudel, Khagendra3 | |
刊名 | ENVIRONMENTAL EARTH SCIENCES |
2016-05-01 | |
卷号 | 75期号:9页码:DOI: 10.1007/s12665-016-5562-0 |
关键词 | Himalaya Landslides Landslide susceptibility Evidential belief function |
ISSN号 | 1866-6280 |
通讯作者 | Regmi, Amar Deep |
英文摘要 | Patu Khola watershed lies in Dang Valley of West Nepal. The rocks belonging to the Precambrian Lesser Himalaya and the Miocene Siwalik cover the northern portion of the watershed, while the southern flat area is covered by the Quaternary river terraces. The basin is disrupted by two regional scale thrusts (Bhotechaur Thrust and Kapurkot Thrust) and several imbricate faults making it prone to instabilities. The river valley is heavily populated as the growing population has forced the people to dwell in such risky zone. Thus, it is very essential to develop a landslide hazard map of this basin. In this respect, we have used an evidential belief function (EBF) model in the GIS environment to know different landslide-susceptible zones in the watershed. For this, a landslide inventory map consisting of 279 different types of landslides was generated from the published topographic maps, aerial photograph, and Google Earth image interpretations and from the detailed filed survey. From the mapped landslides, 80 % were randomly selected for developing the model, and the remaining 20 % were used for validating the model. Twelve different landslide causative factors were considered for this study. Thus, from the analysis of the landslide data and factor maps, a susceptibility map of the region was obtained by using the EBF model. The map was evaluated using area under the curve (AUC) of success and prediction rate. The verification result showed that the model performed very well with the success rate of 85.13 %, and predictive accuracy is 86.42 %. The produced susceptibility map can be useful for general land-use planning, as well as it can provide information to the planners for the adaptation of appropriate mitigating measures for landside hazards in the Patu Khola watershed. |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
类目[WOS] | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
研究领域[WOS] | Environmental Sciences & Ecology ; Geology ; Water Resources |
关键词[WOS] | LOGISTIC-REGRESSION MODELS ; FREQUENCY RATIO ; TURKEY ; AREA ; PREDICTION ; HIMALAYA ; PHILIPPINES ; CATCHMENT ; RAINFALL ; ZONATION |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000376030100020 |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/17390] |
专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Surface Proc, Chengdu 610044, Sichuan, Peoples R China 2.Nepal Acad Sci & Technol, Lalitpur, Nepal 3.Tribhuvan Univ, Cent Dept Geol, Kirtipur, Nepal |
推荐引用方式 GB/T 7714 | Regmi, Amar Deep,Poudel, Khagendra. Assessment of landslide susceptibility using GIS-based evidential belief function in Patu Khola watershed, Dang, Nepal[J]. ENVIRONMENTAL EARTH SCIENCES,2016,75(9):DOI: 10.1007/s12665-016-5562-0. |
APA | Regmi, Amar Deep,&Poudel, Khagendra.(2016).Assessment of landslide susceptibility using GIS-based evidential belief function in Patu Khola watershed, Dang, Nepal.ENVIRONMENTAL EARTH SCIENCES,75(9),DOI: 10.1007/s12665-016-5562-0. |
MLA | Regmi, Amar Deep,et al."Assessment of landslide susceptibility using GIS-based evidential belief function in Patu Khola watershed, Dang, Nepal".ENVIRONMENTAL EARTH SCIENCES 75.9(2016):DOI: 10.1007/s12665-016-5562-0. |
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