The morphopedologic compartments of the Carapina sub-basin, county of Goianápolis, Go

Abstract

Among the sub-basins of the João Leite river basin is that of the Carapina river, elected for this work because it is a plateau (“chapada”) edge area which is representative of the regional geomorphologic and soil patterns, besides being one of those responsible for the water supply for the city of Goiania. The Carapina river basin was sculptured over a great variety of high-grade metamorphic rocks (granulitic facies) of pre-Cambrian age. With the purpose of the diagnosis of the physical environment, several maps were confectioned: the geologic, the hypsometric, the declivity map, and the geomorphologic and soil ones. The crossing of these thematic maps resulted on the morphopedologic compartments map. Four of them were identified: Summit, Summit/Dissected, Dissected, and the lower compartment. The purpose of this work is that of the diagnosis of the physical environment on the basis of the integrated analysis of the rock-relief-soils factors on the different morphopedologic compartments. Considerations about the remaining natural vegetation, the soils erosive susceptibility and on the potential use and current use of the land are done. Key-words: Plateau edge basin; Physical environment diagnosis; Morphopedologic compartments.