Produção Nacional
Spatial Analysis of Fire Regime and its Effects on Landscape Configuration in Savanna Areas of Sempre Vivas National Park, Brazil
2022; RELX Group (Netherlands); Linguagem: Inglês
10.2139/ssrn.4172998
ISSN1556-5068
AutoresNatália Gedeão Salomão, G. Wilson Fernandes, Anne Priscila Dias Gonzaga, Gudryan Jackson Baronío, Danielle Piuzana Mucida, Marcelino Moraes, Marcelo Silva, Leovandes Silva, Israel Marinho Pereira, Evandro Luiz Mendonça Machado,
Tópico(s)Environmental and biological studies
ResumoFire is a natural disturbance in the Cerrado (Brazilian savanna) and its effects on the landscape are capable of altering its pattern of severity and frequency. Within this context, we spatially analyzed fires in areas of cerrado during the years 2003 and 2017 according to severity, frequency and the influence of the spatial configuration of the area. We used pre- and post-fire Landsat satellite images to calculate the DNBR index to analyze fire severity per year and used fire metrics to analyze the relationship between fire severity and the spatial configuration of the fragments. Fire-scar severity was considered low, probably due to the density and structure of the typical cerrado vegetation and the change in annual precipitation. Increased fragmentation and distribution of small fragments during the analyzed period may have favored the observed high fire incidence. Thus, fires in the Cerrado can be intense and spread quickly if no proper control is implemented.
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