Evaluation of the revision of spatial planning for flood due to land and climate changes in Soppeng Regency

Abstract

The follow-up to reviewing the Regional Spatial Planning in Soppeng Regency indicated that the spatial planning could have been better, so an improvement process was carried out. Changes in spatial use and disaster vulnerability are factors in the need to rearrange spatial patterns. The exposure of environmental conditions in Soppeng to hydrometeorological disasters is inseparable from the condition of the area, which is located downstream of several watersheds originating from the surrounding area. Therefore, this study aims to evaluate the revision of the Soppeng spatial pattern for flood events due to land and climate change. This research was conducted based on the ecological boundary conditions of the watershed that affected, where the method used was based on several stages, namely: Land use change analysis using LanduseSim software to project land cover changes, Analysis of climate change using Sibias software to project rainfall and temperature conditions according to the projected period for regional planning, Analysis of flood discharge and drought hazard is processed using the SWAT and Hec-Ras models. Based on the research, it was obtained that the occurrence of floods in the study area occurred in several places with a percentage of 24% of the total area, respectively. After analyzing a revision of the existing spatial pattern, several directions for cultivation areas have a high level of disaster vulnerability. The directions for the affected areas include agricultural and other development areas, such as residential areas. So based on the results of this study, consideration is needed for areas with high flood vulnerability because disaster-related considerations need to be considered in changes to the spatial layout of the Soppeng area.