AVALIAÇÃO DE DOIS ÍNDICES DE SECA NO PARQUE NACIONAL DE ITATIAIA, BRASIL

• DOI: https://doi.org/10.22533/at.ed.8901212624118

• Palavras-chave: floresta tropical, sensoriamento remoto, dados atmosféricos, perigo de incêndio.

• Keywords: rainforest, remote sensing, atmospheric data, fire danger.

• Abstract: Fire is one of the essential elements for the natural cycles in forests, but antropic actions on the planet over centuries have affected these cycles, forcing the occurrence of forest fires to catastrophic proportions. The overall aim of the study was to use micrometeorological data to analyze the occurrence of forest fires in the Itatiaia National Park area and thus provide an effective solution for predicting and monitoring fires in the Atlantic Forest, the Brazilian biome most affected by anthropogenic action. To this end, a two-year survey (2018 and 2019) was carried out, using data from the region on wind speed, air temperature, relative humidity and satellite images of the research site in different bands, in order to produce forest fire indices and soil moisture indices. Higher fire risks were found in late winter and early spring, the dry season from July to November, where dry soil indices are found with the arrival of warm spring air masses. The highest average monthly FFDI values occurred in September (2.14) for 2018, and in January (1.84) for 2019. NMDI values were similar for both years.