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Estudo da micrometeorologia e comportamento do fogo em três tipos de floresta da Região centro de Portugal
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Abstract(s)
Este estudo tem como objetivo analisar o efeito da micrometeorologia no comportamento do fogo em três tipos de florestas adjacentes da Região centro de Portugal, respetivamente, pinheiro-bravo (Pb), eucalipto (Euc) e folhosas caducifólias (FOL). Foram amostrados um total de 20 pares de cada cobertura florestal (Pb/Euc; Pb/FOL; Euc/FOL), em zonas de rede secundária e em áreas de interface urbano-florestal. As recolhas de dados em campo foram processadas e utilizadas em softwares para determinar o comportamento do fogo e a probabilidade da ocorrência de fogo de copas. Os resultados demonstram, que povoamentos de Pb e Euc são mais suscetíveis à ocorrência de fogo de copas e a comportamentos do fogo mais intensos em comparação com as folhosas. Análises estatísticas comprovam a existência de diferenças significativas em quase todos os parâmetros avaliados para FOL entre Pb e Euc, reafirmando estudos anteriores que as florestas de folhosas estão associadas a um ambiente menos favorável à propagação do fogo e, por isso, é uma composição que representa menor perigosidade de incêndios. Este estudo, portanto, é mais uma tentativa de evidenciar sobre a necessidade urgente de ações que promovam a restauração florestal, e uso de espécies resilientes ao fogo em áreas de interface urbano-florestal em Portugal.
This study aims to analyze the effect of micrometeorology on fire behavior in three types of adjacent forests in the Central Region of Portugal, namely, maritime pine (Pb), eucalyptus (Euc), and deciduous broadleaved (FOL) forests. A total of 20 pairs of each forest cover (Pb/Euc; Pb/FOL; Euc/FOL) were sampled in secondary network zones and urban-forest interface areas. Field data collections were processed and used in software to determine fire behavior and the likelihood of crown fires. The results demonstrate that Pb and Euc stands are more susceptible to crown fires and exhibit more intense fire behaviors compared to deciduous forests. Statistical analyses confirm significant differences in nearly all assessed parameters for FOL between Pb and Euc, reaffirming previous studies that deciduous forests are associated with an environment less conducive to fire propagation and, therefore, represent lower fire hazard. Hence, this study is yet another attempt to highlight the urgent need for actions promoting forest restoration and the use of fire-resistant species in urban-forest interface areas in Portugal.
This study aims to analyze the effect of micrometeorology on fire behavior in three types of adjacent forests in the Central Region of Portugal, namely, maritime pine (Pb), eucalyptus (Euc), and deciduous broadleaved (FOL) forests. A total of 20 pairs of each forest cover (Pb/Euc; Pb/FOL; Euc/FOL) were sampled in secondary network zones and urban-forest interface areas. Field data collections were processed and used in software to determine fire behavior and the likelihood of crown fires. The results demonstrate that Pb and Euc stands are more susceptible to crown fires and exhibit more intense fire behaviors compared to deciduous forests. Statistical analyses confirm significant differences in nearly all assessed parameters for FOL between Pb and Euc, reaffirming previous studies that deciduous forests are associated with an environment less conducive to fire propagation and, therefore, represent lower fire hazard. Hence, this study is yet another attempt to highlight the urgent need for actions promoting forest restoration and the use of fire-resistant species in urban-forest interface areas in Portugal.
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Keywords
Micrometeorologia Comportamento do fogo Fogo de copas Povoamentos Folhosas caducifólias