Analysis of Land Use Change in the Period of 2001-2016 Using Remote SensingTechnique in Watershed Bila in South Sulawesi Province, Indonesia

Abstract

Land use that is incompatible to its carrying capacity and watershed capacity causes land use change/land cover. This study aims to analyze the changes of land use/land cover in the watersheds to obtain a spatial description of land use changes/land cover that had been occurred in the last fifteen years in watershed Bila in South Sulawesi Province. This mapping-based research belongs to non-experimental research using survey method. The determination of the coordinates of the representative points shall be carried out purposively based on the accessibility of the land units. Data were analyzed spatially. Land use change/land cover was calculated using method of land change matrix. The results showed that land use change/land cover in the period of 2001-2016 for primary dryland forest was declined and changed into secondary dry forest (1701,16 ha) and bush (92.22 ha). Land cover of dry secondary forest was increased from bushes (516.23 ha), open land (5.34 ha) and dry primary forest (1701,16 ha). Land use was increased from swamp forest (97.87 ha), mixed dryland agriculture (121.67 ha) and rice field (514.97 ha).Furthermore, use of mixed-shrub dry land farm decreased and changed into settlements (121.67 ha) and rice fields (742.49 ha).

For wetland use, the increase of the extent of Dryland Farms (742.49 ha) and marshlands (254.78 ha) occurred. The land cover of shrubland experienced a change into primary dryland forest (92.22 ha) and Secondary Dryland (516.23 ha). Thus, Land use in the watershed area requires integrated land use planning to maintain balance between ecological function and economic function so that the sustainability of the watershed can be preserved.