Landslide Prone Areas in South Makale with the Analytical Hierarchy Process Method
Y. Sarma, A Ahmad and S Laban

Hasanuddin University

Abstract

Landslides are one of the most frequent disasters in Indonesia. The Tana Toraja Regency, specifically in South Makale District, has not been spared from landslides. Therefore it is necessary to map landslide-prone areas to support landslide disaster mitigation efforts in the study area. This study aims to map landslide-prone areas and to determine the factors that most influence landslide events in Makale Selatan. The method uses a spatial analysis method with an Analytical Hierarchy Process (AHP) weighting method, with parameters- slope, rainfall, land use, soil texture, soil type, and rock formation. The Results show the occurrence of landslides in Makale Selatan is strongly influenced by the slope, which has the highest weight with a score of 41% compared to other parameters. The extent of landslide vulnerability is dominated by landslide-prone areas, with a percentage of 51.72% of the total area of the study. Land use as a residential area is almost 50% in areas susceptible to landslides. The slope strongly influences the incidence of landslides in the study area. The level of landslide hazard in the study area is dominated by moderate susceptibility.

Keywords: landslides, susceptibility, disaster, mitigation, AHP

Topic: Agriculture adaptation to environmental changes