Uso de modelo digital de elevação como ferramenta para mapeamento preliminar de solos na Serra da Jiboia – Ba como subsídio à criação de uma unidade de conservação

Abstract

The Serra da Jiboia is cover by forest fragment in the northern portion of the central corridor of the Atlantic Forest that runs from the Bahia’s state to the Holy Spirit’s state, and it retains one of the last Atlantic Forest massive significant of the southern Recôncavo da Bahia. The use of GIS in soil evaluation work has revealed as an important tool in geostatistics analysis and connection of the various Plans Information (PI) to the construction of several maps. Therefore, the use of digital elevation model to analyze the relief of Serra da Jiboia that will subsidize the soil survey. In addition, the use geoprocessing tools in the generation of information plans such as slope and altitude maps that were intersected and constructed the preliminary soil map, it was possible to determinate the areas with a higher relevance at work. The area with more relevance was one lower third x gently rolling (0-8 %) the most representation with 29.03 % of the total area (2045,41 km2). The study through the relief map showed a possible predominance of oxisoils in this region, besides convergences in soil stains with LATOSSOLO VERMELHO-AMARELO distrófico plíntico (OXISOIL), which is presented at the intersection of the highest third in 20-45 % it shows a possible predominance of this soil class in that slope and altitude. The map had a good result, considering that it will subsidize the final soil map, which demonstrated different soil types.