Analysis of Settlement Distribution Concerning Landslide Hazard Areas in Pamijahan, Bogor Regency
Keywords:
landslide hazard, settlement distribution, slope gradient, residential area , mitigationAbstract
Landslides hazard map is an effective way to mitigate the instability slope. Landslides are influenced by static factors, such as soil type, permeability, and topography, as well as dynamic factors, such as rainfall and land cover changes. Recently, developing areas have increased to meet the population growth, thus the presence of the landslide hazard map became crucial to avoid the residents developing in prone areas. This study developed a map of the settlement distribution within landslide-prone zones in Pamijahan, Bogor Regency, and evaluated the feasibility area of residential into permitted, permissible, and not allowable areas. The data collection began with the data on landslide hazards, land use, and slope topography maps. Spatial data analysis was conducted using Geographic Information Systems (GIS) to evaluate residential distributions against landslide hazard zones and slope gradients. The results show that the Pamijahan District consists of 48.64, 44.92, and 6.44 % exist in moderate-risk, low-risk, and high-risk landslides prone respectively. In addition, the study also found that 86.17% of residential are located in permitted areas, 12.25% in permissible areas, and 1,6% in not allowable for residential. This study highlights the importance of controlling development and restoring protected areas as part of landslide mitigation efforts.