Geotechnologies applied to mapping of environmental fragility in the Desbarrancado river basin, MS

• Autores: Cleiton Messias Rodrigues Abrão, Elvira Fátima de Lima Fernandes, Vitor Matheus Bacani, Jaime Ferreira da Silva
• Localización: Geografia, ISSN-e 1983-8700, ISSN 0100-7912, Vol. 40, Nº Extra 40, 2015 (Ejemplar dedicado a: 5º GeoPantanal), págs. 9-26
• Idioma: inglés
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• Resumen

  • This paper aims to analyze the degree of potential and environmental fragility of the Desbarrancado river basin. To develop this work remote sensing data were used and spatial analysis techniques in Geographic Information System and field survey. The results showed that the potential fragility of the watershed area of the Desbarrancado river consists of three categories: low, medium and strong, occupying 48.7%, 49.4% and 1.9% of the basin area, respectively. The environmental fragility revealed four categories: low, medium, high and very high, occupying 11.15%, 82.32%, 4.97% and 1.56% of the basin area, respectively. It is concluded that the watershed of the Desbarrancado river presents a prevalence low and medium degree potential fragility, however when considering the anthropic action has an enlargement of approximately 37% of the area occupied by the medium and high fragility and reduced in the same proportion of areas naturally low fragility, revealing that the predominance of cattle raising activities promoted significant changes in the balance ecodynamic area.