ASSOCIATION OF DIGITAL IMAGE PROCESSING TO THE USE OF MORPHOMETRIC PARAMETERS IN DEFINITION OF LANDSCAPE UNITS IN THE RIVER BASIN CORRENTE - BA

Abstract

The analysis of the morphometric parameters based on the application use of techniques of Digital Processing of Images (DPI) and Geographic Information System (GIS) constitutes an adequate instrument for environment analysis, since it gives an integrated vision of the landscape in the laboratory. The geomorphologic units from GIS assists the environmental diagnosis and studies for the relocation of the human activities in a way to find a more adequate land use management. In this context, the present study it has the objective to make geomorphologic units in the basin of the Corrente river (BA), defining criteria of land use from natural dynamics of landscape. Initially the Digital Elevation Model (DEM) of the basin of the Corrente river from 23 topographical maps (1:100.000) in digital format was made. These maps had been interpolated by TOPOGRID method of the ArcInfo software. Morphometric maps of slope, flow direction and contributing area had been generated from DEM of the basin. These maps were correlated to dispersion graphs. Associated to these proceedings were used, digital processing techniques for images with color compositions and manipulation of contrast. This methodology made possible, then, the definition of distinct geomorphologic standards, which may help in the definition of different land use guidelines.