ROCHA, Layane Carmem Arruda da.; RIBEIRO, George do Nascimento.; MEDEIROS, Paulo da Costa.; ALCANTARA, Hugo Morais de.; BARROS, Maikon Rodrigo Gomes de.; MEDEIROS, Aline Carla de.
Resumo:
Satellite imagery has been an important tool for environmental degradation studies. Some anthropic and natural
activities have contributed to the advance of such modification in nature. The main objective of this work was to identify the
main activities that are causing degradation and to develop thematic maps that show the spatial-temporal evolution of this
environmental degradation for the periods considered dry in the region of Cariri Paraibano, taking into account the years of 1990,
2005, 2008 and 2010. The images used in this research were acquired from INPE's image catalog; Images from Landsat 5 and
Landsat 8 were used and Spring 5.2.7 was used to perform digital image processing and the Scarta module to generate the maps.
From the results obtained, we observed that, from the year 1990, the area of exposed soil had an increase of 21.17%, about 42.92
km2, until the last year in study (2010), it was also observed that about of 32.18% (15.87 km2), of dense vegetation, was removed
from this area. Deforestation and agricultural practices without adequate agricultural techniques have stood out as the main
activities that have increased environmental degradation around the Sumé-PB reservoir, causing a change in biodiversity and
possibly provoking a major silting in the spring.
