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Geoscience ›› 2023, Vol. 37 ›› Issue (04): 1033-1043.DOI: 10.19657/j.geoscience.1000-8527.2023.002

• Hazard Geology • Previous Articles     Next Articles

Geological Hazard Susceptibility Evaluation Based on CF,CF-LR and CF-AHP Models in National Tropical Rain Forest Park:Taking Baoting County, Hainan Province as An Example

LI Xin1,2(), XUE Guicheng1,2, XIA Nan1,3(), LIU Changzhu1,2, YANG Yongpeng1,2, MA Bo1,2   

  1. 1. Hainan Key Laboratory of Marine Geology Resources and Environment, Haikou, Hainan 570206,China
    2. Hainan Geological Survey Institute,Haikou,Hainan 570206, China
    3. Hainan Institute of Mineral Resources Exploration, Haikou,Hainan 570206, China
  • Received:2021-11-16 Revised:2023-01-04 Online:2023-08-10 Published:2023-09-02

Abstract:

The national tropical forest park has steep topography and geological disasters occur frequently. It is of great significance to evaluate the vulnerability of national tropical forest park to geological disasters for risk reduction. Taking Baoting County, Hainan Province as the study area, the fault, elevation variation coefficient, profile curvature, NDVI index, water system and road were selected as evaluation factors. The deterministic coefficient model (CF), the coupling model of deterministic coefficient and logistic regression (CF-LR), and the coupling model of deterministic coefficient and analytic hierarchy process (CF-AHP) were used to evaluate the vulnerability of geological disasters and its accuracy of the study area. The result shows that the topography controls function to the development of geological disasters, and geological disasters influenced by fracture, highway and water distribution are obvious. All the three models have high accuracy (highest for CF-LR), which is a highly reliable model for the evaluation of geological hazard susceptibility.

Key words: deterministic coefficient method, logistic regression, AHP, susceptibility, geological hazard, Baoting County, Hainan Province

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