Bachelor Thesis : Landslide Vulnerability Analysis With Applications of Geographic Information Systems (GIS) and Remote Sensing in Bogor Regency
ARDI CHANDRA YUNIANTO. E34070072.
Under supervision of LILIK BUDI PRASETYO and OMO RUSDIANA
Bogor Regency is one of the area with high landslide potential due to rainfall. High population growth and inappropriate spatial planning in Bogor regency were factors which led to increase risk of landslide. This risk would be more aggravated when community was completely unaware of and not responsive to the potential for landslides in the area. Related to this issue, it requires a comprehensive effort to reduce the risk of landslides, such as analysis of the vulnerability to landslides. The purpose of this study was to map the distribution of landslide prone areas in Bogor Regency and to evaluate the spatial pattern based on the landslide vulnerability in Bogor Regency.
The research was conducted in July – September 2011, with study sites for observation and data collection in Bogor, West Java. The materials used in the research are the images and maps of Bogor Regency in various layers. Landslide vulnerability was analysed based on the prediction model from Indonesian Center for Agricultural Land Resources Research and Development (ICALRD 2009). The parameters used to determine the level of vulnerability were the land cover, soil type, land slope, rainfall, geological formations and the vulnerability of ground motion. Each type of map was classified based on the scores, weighted and overlaid. Bogor Regency spatial pattern was then evaluated based on the Landslide Vulnerability Map.
Analysis based on the ICALRD (2009) Model of Vulnerability Landslide Prediction resulted in three classes of vulnerability to landslides in Bogor Regency, i.e. class of low vulnerability to landslides with an area of 94.991 ha (31.7%) covering 33 districts, class of middle vulnerability to landslides with an area of 173.309 ha (57.8% ) covering 36 districts and classes of high vulnerability to landslides with an area of 31.127 ha (10.396%) covering 28 districts. Results of the evaluation of spatial pattern indicated that some designated residential areas were located in areas with high vulnerability to landslides, which was not appropriate for uses as residential area. In addition, the evaluation also found utilization of areas which violated the designated spatial plan of Bogor Regency, in which conservation and protected forest areas with the function to protect the surrounding environment from landslide had been converted to residential area, plantations, ricefield and farm.
Keywords : Landslide vulnerability, land cover, spatial pattern