Environmental Cartography: Subsidy for Geomorphological Risk Analysis in the Parauapebas River Basin (Pa)

Abstract

Environmental disasters have occurred more frequently, especially those of origin associated with climatic conditions, generally induced by anthropogenic actions, such as floods and landslides. This work aims to present a proposal for mapping physical-environmental indicators to support the analysis of geomorphological risk in the hydrographic basin of the Parauapebas River (PA). The methodology adopted was based on precepts of the theory of ecodynamics (TRICART, 1977), supporting, in this way, the analysis of variables and criteria adopted in the estimation of the fragility of the natural environment of the environments (ROSS, 1994). Four geomorphological risk classes were identified – very low, low, moderate and high. The hydrographic basin of the Parauapebas River showed a worrying panorama in the face of the geomorphological risk, which may, in this sense, be potentiated by the accelerated and disorderly expansion of human activities.