Qualificação E Delimitação De Áreas Queimadas Através Do Processamento Digital De Imagens Tm/Landsat

Pinheiro, Fabianna Rodrigues; Giongo, Marcos

doi:10.20873/uft.2359-3652.2018v5nespecialp30

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“…We also used the burned area product obtained from the Center for Environmental Monitoring and Fire Management, Federal University of Tocantins, which corresponds to the surface affected by fire in the dry season (accessible upon request). The detection of the burned area was with the visual interpretation of the burn scars in two annual images obtained by the Landsat 5 and Landsat 8 satellites (spatial resolutions of 30 m) and from the Resourcesat satellite (spatial resolution of 23.5 m which were resampled to 30 m) [41]. Before the analyses, we revised and recalculated the burned areas for the period 2008-2017 considering surfaces equal or larger than 9 × 10 −4 km 2 (same area as a Landsat pixel).…”

Section: Datasetsmentioning

confidence: 99%

Implementation of Fire Policies in Brazil: An Assessment of Fire Dynamics in Brazilian Savanna

et al. 2021

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In 2012, the Brazilian government implemented the Federal Brigades Program (FBP), a fire policy strategy to hire and train firefighters to combat wildfires. This study analyzed the impact of this program on fire behavior before (2008–2012) and after (2013–2017) its implementation in the Parque do Araguaia Indigenous Land, the largest indigenous territory with the highest occurrence of fires in the Brazilian tropical savanna. We analyzed the annual pattern of fire incidence in the dry season, the fire impact per vegetation type, the recurrence, and the relationship between fire and precipitation. The datasets were based on active fire products derived from the Moderate Resolution Imaging Spectroradiometer (MODIS), the Landsat and Resourcesat-based burned area products, and the records of the fire combat operations. Our results showed that FBP contributed to the reduction of the number of areas affected by fires and to the formation of a more heterogeneous environment composed of fire-resistant and fire-sensitive native vegetation fragments. On the other hand, after the implementation of the FBP, there was an increase in the recurrence of 3–4 years of fires. We concluded that the FBP is an important public policy capable of providing improvements in fire management activities.

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Section: Datasetsmentioning

confidence: 99%