Utilization of Geographic Information Systems (GIS) for Mapping Landslide Prone Areas in Kendari City

Abstract

Landslides that occurred in Kendari City from the past few years have caused casualties, precisely in 2017 in Kampung Salo, Kendari District. The occurrence of landslides is influenced by several factors, namely from the type of soil, rainfall, slope and land use. This research aims (1) To map landslide prone zones using geographic information systems; and (2) To produce information to find out landslide-prone zones so that they can be avoided. The research method used was overlay method of analysis techniques, which was through scoring and weighting. The results of the landslide-prone map study were made using GIS with ArcSIG 10.1 software application through the overlay process in the form of shp format. Furthermore, adding up all parameter scores so that the minimum and maximum values of the city of Kendari are obtained for areas not prone to landslides of 3405.09 ha or 12.69% covering the sub-districts of Kambu, Baruga, Poasia, Mandonga and some regions, the area is prone to landslides of 5574.34 ha or 20.78% covering the Abeli sub-district, Baruga, Puwatu area which is quite prone to landslides of 12041.48 ha or 45% covering the Abeli sub-district, Baruga, a small portion of Kaida, Kambu, Mandonga, Puwatu, and Wua-Wua in areas that dominate potential prone to landslides of 40.78 ha or 1.27% or 15.05% covering parts of Abeli, Kendari and Kendari Barat sub-districts, while areas that are very prone are 4038.34 ha or 15.05%, which include Kendari, Kendari Barat, Mandonga, Abeli and part small sub-districts of Poasia, Puwatu, and Baruga.