Journal of Yangtze River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (11): 64-72.DOI: 10.11988/ckyyb.20200756

• ENGINEERING SAFETY AND DISASTER PREVENTION • Previous Articles     Next Articles

Landslide Susceptibility Mapping Using Radial Basis Function Neural Network Coupling Certainty Factor

ZHANG Ting-yu1,2,3,4, MAO Zhong-an2, SUN Zeng-hui1,2,3,4   

  1. 1. High-standard Farmland Construction Research Office, Shaanxi Institute of Land Construction and Engineering Technology Co., Ltd., Xi'an 710075, China;
    2. Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an 710075, China;
    3. Key Laboratory of Degraded and Unused Land Consolidation Engineering of Ministry of Natural Resources, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an 710075, China;
    4. Shaanxi Provincial Land Consolidation Engineering Technology Research Center, Shaanxi Provincial Land Engineering Construction Group Co., Ltd., Xi'an 710075, China
  • Received:2020-07-29 Revised:2020-09-30 Online:2021-11-01 Published:2021-11-08

Abstract: Landslide susceptibility mapping is an effective means of landslide prediction. We built a hybrid model integrating RBFNN (Radial Basis Function Neural Network) with Certainty Factor (CF) for the mapping of landslide susceptibility in Chenggu County, Hanzhong City of Shaanxi Province. First of all, we selected slope, aspect, plane curvature, profile curvature, elevation, mean annual precipitation, distance to road, distance to river, distance to fault, NDVI and lithology as landslide's triggering factors and then quantified such factors by calculating the corresponding CF. Secondly, we divided the field survey data of 184 landslides into training data and test data with a ratio of 7∶3, and generate the landslide susceptibility maps using RBFNN-CF and RBFNN models, respectively. Finally, we evaluated and compared the mapping results and the classification ability of the models according to the area under the ROC curves. The results suggest that the classification and generalization ability of RBFNN-CF model are both superior to those of RBFNN model. The hybrid model is worth popularizing in the study area, and the landslide susceptibility maps obtained in this study could also provide references for local landslide prevention and control.

Key words: landslide susceptibility, RBFNN, certainty factor, hybrid model, GIS, ROC curve

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