Uso de geotecnologias na caracterização físico-ambientais da bacia hidrográfica do Rio Farinha-PB

Abstract

The use of remote sensing and geoprocessing techniques for the purposes of environmental analysis, with the new methodologies to be applied, has been conceived as a frequent practice among the research areas, contributing to the expressive mode for rapid, reliable and Analyzes that involve the Processes and have become fundamental pieces for the characterization of a region. The research was developed with the methodological support of cartographic products, whose objective is to study a morphometry and analyze a temporal evolution of soil use in the Farinha river hydrographic basin, using the remote sensing technique, constituting an important stage Within the geomorphological study, can explain the processes and dynamics of the area. The characteristics of the Farinha River Basin were extracted from the thematic maps generated and satellite images obtained from the Landsat 5 TM and Landsat 8 OIT satellites, resulting in indices that relate the data obtained and the price of soil cover in the period 1994 and 2015 .The results show that the Basin has a shorter concentration of precipitated water and is not subject to flooding due to its shape, which favors flow, portrayed by the compaction coefficient of 2.03 and a form factor of 0, 24. It was useful to analyze the evolution of the degradation process, being able to estimate a loss of 21% of the dense vegetation over 21 years, confirmed by the current situation, through the classification of the images.