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Sociedade & Natureza

On-line version ISSN 1982-4513


BARROS, Marco Aurélio; MOREIRA, Maurício Alves  and  RUDORFF, Bernardo Friedrich Theodor. Interferometric data for topographic modeling and environmental characterization of coffee crop at municipality scale. Soc. nat. (Online) [online]. 2007, vol.19, n.2, pp.33-50. ISSN 1982-4513.

With the recent technical evolution and the free of charge access to several geo technologies, it has been observed that the use of these tools are relevant to the planning of agricultural activities in order to maximize the use of natural resources in a more sustainable manner. In this context, the physiographic conditions of a certain region may or may not allow agricultural exploration bringing direct consequences to crop yield and to the environment. O pilot area was selected in Minas Gerais State comprising the municipalities of Aguanil, Boa Esperança, Campo Belo and Cristais. In order to achieve the proposed objectives a pre-processing with the SRTM regular grid was carried out, to correct for negative values. Following, an altimetry mash was associated to a cartographic projection system (UTM/SAD69) and organized in a geographic information system of public domain (SPRING). From the pre-processing and the application of derivative methods, the slope and slope orientation variables were obtained in spatial numerical format (regular mash) and thematic map. The results showed that it was possible to obtaining the coffee crop profile for each municipality with regard to these variables.

Keywords : interferometer radar SRTM; geotechnologies; modeling; coffee.

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