Pemanfaatan Sistem Informasi Geografis Untuk Analisis Penggunaan Lahan Berdasarkan Aspek Geologi Lingkungan di Sub DAS Kamp Wolker Kota Jayapura

Abstract

Land use in Jayapura City is a real result of a long process of constant interaction between development activities, population growth on limited land, especially in urban areas, because with increasing population growth, forest changes, pollution and erosion will certainly affect the River Basin. Increasing land use changes occurred in the Kamp Wolker Sub-DAS in Jayapura City, which is one of the sub-DAS with an area of approximately 2,782 Ha. This study aims to determine the spatial distribution of land use based on morphological, topographic and lithological aspects (rocks and types of rocks). The method used is the analysis of the spatial distribution of land use using Geographic Information Systems (GIS). The results of the study indicate that the spatial distribution of land use in the Kamp Wolker Sub-DAS based on morphology, it was found that land use was distributed in mountain or mountainous morphology with an area of 1,162.63 Ha, land use based on topography, it was found that land use was distributed in topography with a slope of 25 - 40% covering an area of 978.36 Ha, then based on lithology, in this case the constituent rocks, it was found that land use was distributed in ultramafic rocks (Hasburgrite, Sepentinit and Dunite) covering an area of 2,346.76 Ha, while the type of soil, it was found that land use was distributed in the latosol type of soil covering an area of 1,698.50 Ha. So it can be concluded that by utilizing the Geographic Information System (GIS), land use in the Kamp

Wolker Sub-DAS, Jayapura City can be mapped based on environmental geology aspects, namely morphology, topography and lithology.