ANÁLISE MULTICRITÉRIO, EM AMBIENTE SIG, PARA ZONEAMENTO DE RISCO DE INCÊNDIOS FLORESTAIS EM ÁREAS DE BACIAS HIDROGRÁFICAS.

The theme of forest fires is increasingly relevant, either by influence of climate change or by anthropic effects, with great concern about its harmful effects on the environment. Based on this, this research aimed at mapping the potential risk of forest fires in the Tapacurá River watershed, using remote sensing tools and data processing through Geographic Information Systems (GIS). For this, methodologies adapted from the works of Chuvieco and Congalton (1989) were used, making it possible to determine different classes of fire risk, ranging from low, medium to high, for various environmental factors that will influence these processes, such as land use and occupation, terrain slope, annual water deficiency, rainfall, altitude, average air temperature, real annual evapotranspiration and the orientation of the terrain's slopes. Through these factors, it was possible to obtain the fire risk map that encompassed 48.49% of the basin area being under medium fire risk level, followed by 41.28% of the area under high fire risk, and 10.23% of the area consisting of low fire risk level. The study allowed for a better understanding of these risks in the watershed area, and also presented great potential to guide public decision-making for possible measures to prevent and fight fires. [ABSTRACT FROM AUTHOR]