Digital integration and spatial analysis applied to the study of the susceptibility to forest fires in Apiaú and Ribeiro Campos - Roraima

Abstract

The practice of forest fires strikes most of the ecosystems in Roraima. In forest areas, this practice, added to climate changes resulted from the El Niño event, promotes the entrance of accidental fire in primary forest areas originating forest fires. In this context, the present paper objected to analyse the enviromental factors that contribute for the occurrency of fires and identify areas under risk of forest fires in Apiaú and Ribeiro Campos using statistic techniques according to the methodology of the decision tree, AHP space analysis and IHS digital integration in Apiaú and Ribeiro Campos (RR). The use of the decision tree in hierarquization of the evaluation of areas under risk of fires. The integrated products by IHS technique allowed the interpretation of the thematic variation of the enviromental factors spacely and spectraly with phisiografhic fections on just one image. The susceptibility maps resulted from the application of the AHP techinique showed that there are areas with high susceptibility to fires, indicating the need of more commitment of the public power and civil society in preventive actions to fire practices so that fires don’t occur again similar to the ones in 1998 and 2003.