Fire risk mapping for pine and eucalyptus stands in Três Barras,State of Santa Catarina, Brazil

摘要

This work was developed in Três Barras, State of Santa Catarina, Brazil, in a regionrncomposed of pine and eucalyptus plantations and indigenous vegetation. The objective ofrnthe research was to build a forest fire risk map through the integrated analysis of human presence,rnvegetation cover, fuel load, slope gradient and aspect, and predominant winds. For thisrnanalysis the Geographical Information System (GIS) was used. The final stage of this work wasrnthe construction of a risk map, resulted from the superposition of various thematic maps developedrnin the previous stage. The fire risk map obtained from the correlation analysis between thernenvironmental conditions and the local fire occurrences showed that 51,7% of the area was underrnlow risk and 29,2% under moderate risk. However, the final map was highly influenced by thernweighted model, being necessary a very discerning analysis of the environmental conditions associatedrnto the forest fire occurrences in the region.