Análise temporal da ocorrência de incêndios florestais no parque Estadual da Serra de Caldas Novas (PESCaN), Goiás

Abstract

The lack of quantitative information about the fires inside the State Park of Serra de Caldas Novas (PESCaN) prevents the development of preventive actions and fire management within this Conservation Unit (UC). Thus, the aim of this study was the identification, delimitation and quantification of burnt areas inside the Park, from a Geographic Information System, developed in the QGIS software. The used of remote sensing products in GIS proved to be extremely efficient in the historic characterization of fire occurrences in PESCaN. In the period from 1984 to 2014 fire scars were identified in eighteen years, and in September the images show the largest tracts of burned areas. The largest fire occurred in 2008, reaching approximately 87,94% of the total area. The smallest identified fire record occurred in 2004, reaching an area of 222,31 hectares, corresponding to 1,83% of PESCaN. By overlapping the marked polygons as fire, it was observed that the number of occurrences in the same area varied from 1 to 14 times, however, it was found that all areas have been burned at least once in the range analyzed. Through maps and tables built, it was possible to observe important historical factors which can, thus, support the planning and fire management in this UC, and contribute to future research in PESCaN.