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Fires have a central role in carbon emissions in tropical regions, directly affecting the carbon cycle and the health of the population. In the Cerrado, fire occurs naturally and by human influence, used in the productive process of agriculture and livestock. In this context the aim of this paper was to characterize the spatiotemporal dynamics of fires in the Brazilian Savannas, also known as Cerrado, in the state of Maranhao (North-eastern Brazil). We used datasets from remote sensing and INMET weather stations. Data were processed and tabulated. Spatial and regression analyses were performed. Our results evidenced that the fires are modulated by the seasonality of the rainfall regime, being able to be influenced also by variations of temperature and moisture of the air. This region was affected in 2007 and 2012 by droughts that caused the expressive increase in the number of fires. In this region, deforestation is not directly linked to the occurrence of fires. The savanna formations were identified as the most susceptible to the occurrence of fires, since they account for a large part of the recurrences and occurrences of fires in this region.

Dinâmica das Queimadas no Cerrado do Estado do Maranhão, Nordeste do Brasil