Engenharia Florestal (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/15
Siglas das Coleções:
APP - Artigo Publicado em Periódico
TAE - Trabalho Apresentado em Evento
TCC - Trabalho de Conclusão de Curso
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2 resultados
Resultados da Pesquisa
Item Dinâmica do risco de incêndios sob efeito do El Niño em paisagem do bioma Caatinga em Petrolina - PE(2023-02-17) Feitosa, Márcio Faustino; Silva, Emanuel Araújo; Souza, Ioneide Alves de; http://lattes.cnpq.br/0383867840261318; http://lattes.cnpq.br/2765651276275384; http://lattes.cnpq.br/7669915736150355Remote sensing techniques have been used since the 1960s to work on a particular object or specific area. Over time, technologies have gained improvements and new software and high resolution satellites have emerged. The Landsat-8 satellite can capture scenes up to 705 km away from earth, with a percentage of 10% of clouds, these scenes can be processed and studied for a certain purpose, among these was the dynamics of fire risk under the effect of El Niño in landscape of the Caatinga Biome. Therefore, it is intended to study the vulnerability of Caatinga and the use of monitoring technologies. The objective of this work is to evaluate the influence of El Niño on the dynamics of fire risk under the landscape of the Caatinga biome in Petrolina-PE, monitoring the risk of fire in relation to the severity of El Niño. Images of the Lansat-8 satellite in the municipality of Petrolina-PE were obtained from the USGS website. The following criteria were adopted for image selection: Data from 2015 to 2020, counting from August 1st to December 31st, at times when there are few precipitations, few clouds and high temperatures due to the warmer months. The tool in data processing was Qgis software, a free license software, indicated for those seeking high quality in academic work in the area of Remote Sensing. In the interval of these years, six fire risk maps were obtained. Togenerate the forest fire risk maps and adopted the AHP methodology, widely used by several authors. Where we obtained eight variables: hypsometric map, land use and occupation, slope orientation, slope, road system, precipitation, surface temperature and vegetation index of the normalized difference. According to the results, a temporal analysis of fire risks was obtained, proving that the years 2015 to 2018 had a continuous increase, and in 2019 and 2020 there was a fall in fire risk. Between these last years there was an El Niño and a La Niña and 2020 was the year that the pandemic occurred, that is, there were few transport flows on the highways, causing low risk of fires.Item Influência do efeito de queimadas na visibilidade horizontal em aeródromos no estado do Mato Grosso(2022-05-23) Gomes, Gabriella Helena Camargo; Nascimento, Cristina Rodrigues; http://lattes.cnpq.br/9289129949520610; http://lattes.cnpq.br/7449671578032492Forest fires in the state of Mato Grosso cause a series of consequences for the environment and society. Particles suspended in the air, from the large amount of smoke released, can bring challenges and damages to civil aviation, as, in some cases, they interrupt airport operations, endanger the lives of passengers and affect the local economy. Therefore, the present research aims to evaluate the influence on the horizontal visibility of the concentration of particulate matter in the atmosphere, caused as a result of fire events, at airfields in the municipalities of Alta Floresta and Cuiabá and to analyze the evolution of these outbreaks of heat over a time series. The Quantis technique was used to classify the distribution of precipitation based on data from the Agrometeorological Monitoring System (Agritempo) and later the quantification of hotspots in these Municipalities was carried out in the time series from 2018 to 2021. The evaluation of the relationship between the number of hotspots versus the release of aerosols into the atmosphere, and the relationship between horizontal visibility and restrictions on landings and take-offs at aerodromes was based on aerosol data obtained by the AERONET (Aerosol Robotic Network) platform. Data from the meteorological aerodrome reports, METAR (Meteorological Aerodrome Report), were consulted in order to verify what were the visibility conditions at the airports of Alta Floresta and Cuiabá on the days with the highest number of hotspots, which occasionally occurred in the year of 2020. Concomitantly, the temporal evolution of these hotspots over the years analyzed and the units of landscapes sensitive to the occurrence of fires were studied, based on data from the Annual Mapping Project of Land Use and Coverage in Brazil (MapBiomas). Therefore, it was found that in 2020, in general, there was a strong increase in the number of hotspots in both municipalities and on August 31, 2020, it was impossible to perform landings and takeoffs at Cuiabá airport due to the high concentration of smoke. It was also possible to notice that there is no pattern of specific locations for the occurrence of hotspots in these cities in the driest months, but there is a certain pattern in the type of area in which they predominantly occur, being Pasture in Alta Floresta and Savânica Formation in Cuiabá.