One of the causes of decrease forest functions is deforestation. Deforestation is a nonforest cover change activity that affects the decrease function of forest ecosystems. South Sulawesi and West Sulawesi Provinces are two areas that have experienced high deforestation. The area of forest in South and West Sulawesi in 1990 amounted to 2,550,946.13 ha. The number decreased in 2019 amounted to 2,213,628.88 ha. This study aims to identify and understand the spatial model of deforestation based on biophysical driving factors in South Sulawesi and West Sulawesi Provinces from 1990 to 2019. Materials used in this study were Statistics Data Centers in 1990, 2000, 2010, and 2019, Deforestation Profiles at South Sulawesi and West Sulawesi, literature supporting research. Data analysis used PCA (Principal Component Analysis) method. The results of this research explain that the driving factors the occurrence of deforestation in each location of the most influential research is the factor of the road, the closer the forest area to the road the higher the public desire to penetrate the forest area in addition, facilitate agricultural activities to distribute forest products and logs felling. River factors also have a role in the occurrence of deforestation, the community is very dependent on water needs primarily for agricultural land and plantations. In addition, the slope and altitude factors are also quite influential on the occurrence of deforestation due to the clearing of land in a fairly flat area with low altitude as in the Regency Bone and North Luwu, South Sulawesi province is very visible influence over the topographic areas of mountains and steep as in the Regency of Mamuju and Mamasa Regency, West Sulawesi Province. Areas with such topography, have a low level of accessibility so that the pressure and disturbance are low enough from the community.
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