Análise de registro de incêndios em florestas de produção

• Autor(a) principal: Canzian, Weslen Pintor
• Data de Publicação: 2019
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/13233
• topic: Recursos Florestais e Engenharia Florestal; Damage; Proteção florestal; Prevenção; Combate; Prevention; Combat; subject.br-rjbn

In the area of forest protection, forest fires are among the worst events that forests are susceptible to, and in the private sector, concern about fires intensifies through economic losses social and environmental impacts. The aim of this study was to propose a methodology for analysis of fire occurrences in production forests through a new classification for mean burned area and mobilization and displacement times. Specifically aimed to: identify the causes of fires, analyze the correlation between meteorological elements and the number of occurrences, distribution of occurrences throughout the year and day, average distance traveled by combat teams, and analysis of mobilization times , displacement and combat. The study was subsidized by the 10-year historical series of records of the occurrence of fires and meteorological variables from 26 meteorological stations of a eucalyptus pulp producer in the north of Espírito Santo and southern Bahia, from 2008 to 2017. According to the results, 91.4% of the 33,075 occurrences over the 10 years were originated by arsonists. Relative humidity is the meteorological element that most influenced the possibility of fires in the study area. On average, the Pearson correlation applied between the months of the year and the meteorological elements showed a moderate negative correlation of -0.52 for the relative humidity in Posto da Mata and a low negative correlation for the other regions. In addition, the correlation averages of all four regions showed negligible correlation for temperature and precipitation. In the average of the four regional ones, January, September and October were the only months to concentrate more than 10% of the occurrences between the months of the year, respectively 12,14; 11.33 and 14.76% of occurrences, totaling 38.24%. The highest concentration of fires was from 1:00 pm to 4:59:59 '' with at least 51.31% of occurrences. The mobilization and displacement times were satisfactory, with averages of at least 75.15 and 60%, respectively, concentrated to class II, represented respectively by the maximum limits of 5 and 50 minutes. The average displacement and combat times presented a strong positive correlation with the average burned area size. This demonstrates the importance and necessity of an agile and efficient firefighting strategy. Despite an average of 9.06 daily fire outbreaks in 220,000 ha of planted forests, the average burned area over the years was 2.39 ha. The classes of mobilization, displacement and average burned areas proposed by this study enable forest fire managers in production forests to analyze how the structure and fire fighting model have behaved, so that the higher the concentration of forest fires. occurrences in the larger classes, the greater the possibilities of adjustments in the combat system.