Geographical Study on Analysis of Landslide Disaster Vulnerability Levels as a Basis for Mitigation in Cepogo Subdistrict, Boyolali Regency

Spatial Analysis in Determining Landslide Prone Areas

Abstract

Cepogo District is an area with hilly topography and steep slopes, making it prone to landslides. This research examines the level of landslide risk in Cepogo District, Boyolali Regency, as a basis for disaster mitigation. By using spatial analysis and assessing several physical factors such as slope, soil type, rainfall, geology, and land use, it was found that 35% of the area is at high risk, 40% at moderate risk, and 25% at low risk. The southern part, especially Wonodoyo Village, is the most vulnerable due to its steep slopes (>25°) and high rainfall. These results were mapped using a Geographic Information System (GIS), providing a comprehensive overview of the susceptible areas. To reduce risk, it is recommended to implement drainage, terracing, re-forestation, early warning systems, as well as provide education and training for the community. Planting strong-rooted plants like vetiver and land-use policies that consider vulnerable zones are also important. This research emphasizes the importance of collaboration among technical, environmental, social, and institutional aspects for sustainable landslide risk reduction.

Keywords: Landslide, Vulnerability, Mitigation, Cepogo, Boyolali