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El uso de geotecnologías en el análisis de la fragilidad del paisaje en la cuenca media-baja de río Araguari, Brasil

Authors

  • Thallita Isabela Silva Martins Federal University of Uberlândia, Institute of Geography, Av. João Naves de Ávila, 2121. Bloco 1H, Sala 1H16, Campus Santa Mônica CEP: 38.408-100. Uberlândia – MG
  • Sílvio Carlos Rodrigues
No. 44 (2012)
https://doi.org/10.5354/0719-5370.2012.26366

Abstract

This paper presents the mapping of environmental fragility of Medium Lower Araguari River Basin,Minas Gerais State - Brazil. This was possible from the analysis of the various environment variablesthat complete the basin system, such as landforms, rocks, soils, land use and vegetable coverage. It wasused as methodological basis the General Systems Theory, the Landscape Ecology and EnvironmentalGeomorphology, together with the application of geospatial technologies and GIS. From the systemicand holistic analysis of the landscape, it was possible to produce various cartographic maps to representthe environmental aspects of the study area, enabling the correlation and the generation of the potentialand emerging fragility maps.The main objective of this work is to test a methodology for assessing thenatural fragility of erosion occurrence by correlating variables in a GIS environment. In this sense, themethod of Weighted Overlay was used in an GIS environment for mapping parameters. The resultsgenerate 2 types of approach, one dealing with the potential of the basin natural weakness in whichwe obtained a distribution of 39.30% of the total area of the basin in the Lower class of fragility, and29.20% Medium Class of Fragility and 26.37% for the High Class of Fragility. A second analysis isperformed by inserting human activities that affect and improve the development of erosion processes,and showed that predominate in the watershed classes of Medium Fragility with 47.35% of the totalarea and 39.28% of the total area with Low Fragility.

Keywords:

Geoprocessing, GIS, Weighted overlay, Environmental Planning, Araguari River, landscape analysis

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How to Cite
Silva Martins, T. I., & Rodrigues, S. C. (2012). El uso de geotecnologías en el análisis de la fragilidad del paisaje en la cuenca media-baja de río Araguari, Brasil. Investigaciones Geográficas, (44), Pág. 3–16. https://doi.org/10.5354/0719-5370.2012.26366
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