[1]SHEN Huaifei,DONG Yu,YANG Mei,et al.Assessment on Landslide Susceptibility in Gansu Province Based on AHP and Information Quantity Method[J].Research of Soil and Water Conservation,2021,28(06):412-419.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
412-419
Column:
Public date:
2021-10-10
- Title:
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Assessment on Landslide Susceptibility in Gansu Province Based on AHP and Information Quantity Method
- Author(s):
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SHEN Huaifei,DONG Yu,YANG Mei,SHI Caiqi,YANG Xinke
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(School of Urban and Environmental Sciences,Xuchang University,Xuchang,Henan 461000,China)
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- Keywords:
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geology; susceptibility assessment; analytic hierarchy process(AHP); information value method; Gansu Province
- CLC:
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P954
- DOI:
-
-
- Abstract:
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Gansu Province is one of the areas where landslide disasters occur frequently in China,and the lives,property and ecological environment of residents in this area are threatened. In order to reduce the disaster degree of the province,improve people's awareness of landslide disaster prevention,and provide theoretical basis for landslide disaster prevention in Gansu Province,we selected ten landslide disaster risk impact indicators from the geographical environment,geological conditions,human activities and other aspects of Gansu Province,and comprehensively evaluated the landslide susceptibility of Gansu Province based on the AHP and information quantity value of each indicator obtained by using the analytic hierarchy process and information quantity model throught referring to the risk assessment indicators and methods of landslide disasters at home and abroad. The results are as follows. The area of extremely high prone area accounted for 4.336% of the total area of the study area,and the density of landslide disaster was 12.870. The area of high prone area accounted for 15.243%,and the density of landslide disaster was 9.392. The area of middle prone area was 47.544%,and the density of landslide disaster was 2.041. The area of low-prone area accounted for 32.875%,and the density of landslide disaster was 0.074. The area of extremely low prone area accounted for 0.003%,and the density of landslide disaster was 0. The landslide vulnerability is relatively small in most regions of Gansu Province,and the spatial distribution characteristics of landslide disaster vulnerability are concentrated. Landslide disaster vulnerability mainly concentrate in the southeast region,and most of landslide disaster vulnerabilities are located in the areas with high population density and dense transportation lines.