Fire foci dynamics and their relationship with socioenvironmental factors and meteorological systems in the state of Ala
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Fire foci dynamics and their relationship with socioenvironmental factors and meteorological systems in the state of Alagoas, Northeast Brazil José Francisco de Oliveira-Júnior & Washington Luiz Félix Correia Filho & Laurízio Emanuel Ribeiro Alves & Gustavo Bastos Lyra & Givanildo de Gois & Carlos Antonio da Silva Junior & Paulo José dos Santos & Bruno Serafini Sobral
Received: 27 October 2019 / Accepted: 31 August 2020 # Springer Nature Switzerland AG 2020
Abstract The objective is to evaluate the fire foci dynamics via environmental satellites and their relationship with socioenvironmental factors and meteorological systems in the state of Alagoas, Brazil. Data considered the period J. F. de Oliveira-Júnior : W. L. F. C. Filho : P. J. dos Santos Institute of Atmospheric Sciences (ICAT), Federal University of Alagoas (UFAL), Maceió, Alagoas 57072-260, Brazil J. F. de Oliveira-Júnior : G. B. Lyra : B. S. Sobral Postgraduate Program in Biosystems Engineering (PGEB), Federal Fluminense University (UFF), Niterói, Rio de Janeiro 24220-900, Brazil L. E. R. Alves National Institute for Space Research (INPE), Av. dos Astronautas, 1758-Jardim da Granja, São José dos Campos, São Paulo 12227-010, Brazil G. B. Lyra Department of Environmental Sciences (DCA), Institute of Forests (IF), Rural Federal University of Rio de Janeiro (UFRRJ), Seropédica, Rio de Janeiro 23897-000, Brazil G. de Gois School of Industrial Metallurgical Engineering of Volta Redonda, Technological Center, Federal Fluminense University (UFF), Volta Redonda, Rio de Janeiro 27255-250, Brazil C. A. da Silva Junior (*) Department of Geography, State University of Mato Grosso (UNEMAT), Sinop, Mato Grosso 78550-000, Brazil e-mail: [email protected] B. S. Sobral Land and Cartography Institute of Rio de Janeiro (ITERJ), State Secretary for the Environment and Sustentability (SEAS-RJ), Rua Regente Feijó, 7, Centro, Rio de Janeiro 20060-060, Brazil
between 2000 and 2017 and was obtained from CPTEC/ INPE. Annual and monthly analyzes were performed based on descriptive, exploratory (boxplot) and multivariate statistics analyzes (cluster analysis (CA), principal component analysis (PCA)) and Poisson regression models (based on 2000 and 2010 census data). CA based on the Ward method identified five fire foci homogeneous groups (G1 to G5), while Coruripe did not classify within any group (NA); therefore, the CA technique was consistent (CCC = 0.772). Group G1 is found in all regions of Alagoas, while G2, G5, and NA groups are found in Baixo São Francisco, Litoral, and Zona da Mata regions. Most fire foci were observed in the Litoral region. Seasonally, the largest records were from October to December months for all groups, influenced by the sugarcane harvesting period. The G4 group and Coruripe accounted for 60,767 foci (32.1%). The highest number of fire foci occurred in 2012 and 2015 (between 8000 and 9000 foci), caused by the action of the El Niño–Southern Oscillation. The Poisson regression showed that the dynamics of fire foci are directly associated with the G
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