A methodological proposal to map the dissection of the relief and apply it in the Serra da Canastra-MG National Park¹

Abstract

Our study proposes a map of the relief dissection using the bivariate geovisualization technique. This map allows us to verify the influence of each variable; notching of the valley and interfluvial dimension, separately or combined. The Serra da Canastra National Park, southwest of the state of Minas Gerais, was chosen to apply the method due to its geomorphologic characteristics and altimetry amplitude. The results presented by bivariate map, showed equivalence with the other proposals existing in the Brazilian literature, with good precision and spatial correlation, mainly where the dissection is “very strong”. The methodology has the advantage of universality, since its application does not depend on the database used, without requiring interference by decision makers, based on the digital elevation model (DEM) of any geographic region.

Keywords:
Relief dissection; Bivariate Geoview; Serra da Canastra National Park