Classificação de perigo de incêndios na bacia hidrográfica do Médio Paraíba do Sul: combinação da metodologia AHP e o SIG

Abstract

Recently, the media has frequently highlighted the forest fires, not only in Brazil, but also around the world. Meteorology states that the absence of rain for several days increases the risk of vegetation burning, increasing the chances of fires forestry. However, other factors, such as terrain slope, human occupation, temperature, precipitation, slope orientation, altitude, water deficit and relative air humidity also influence the occurrence of forest fires. This research aims to evaluate the dangers of occurrences of fires in the Medio Paraíba do Sul region, classifying them based on correlated factors in Hydrographic Region III or RH-III (PSRB Region III). On this purpose, there were combined climatic, topographic and geobiophysical data, using the Analytical Hierarchy Methodology (AHP) to consider the factors and Geographic Information System (SIG) for spatial analysis in preparation of the region's hazard map as a final product.The results indicated that the Itatiaia National Park is classified as a high-risk area. This study also aims to provide information for future reports by the Medio Paraiba do Sul Committee on critical events, with the objective of reducing environmental impact and protecting vulnerable natural areas in the river basin.