TCC - Engenharia Florestal (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/436
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Resultados da Pesquisa
Item Utilização de imagens SRTM na obtenção de dados altimétricos para o município de São João do Sabugi - RN(2024-08-13) Fabrício, Jefferson José Azevedo; Duarte, Simone Mirtes Araújo; http://lattes.cnpq.br/5876968040869585The analysis of morphometric characteristics such as area, perimeter, slope, altitude, drainage density, among others, are fundamental in the development of environmental studies. The physical and biotic characteristics of a given location play an important role in decisionmaking. In this sense, the development and improvement of techniques together with geotechnologies for morphometric characterization have been the subject of study in several parts of the world, and promote relevant results. In view of the above, the present study aimed to perform the morphometric characterization of the municipality of São João do Sabugi - RN, using data from the ALOS PALSAR Satellite, integrated and processed in a GIS environment. The spatial data obtained were subjected to pre-processing techniques, such as reprojection of its coordinate reference system to UTM (24s time zone) and of its geodetic system to SIRGAS 2000, as well as exclusion of its spurious pixels. These procedures allowed the obtaining of accurate morphometric parameters. The results showed that morphometric characterization, through the processing of Digital Elevation Model (DEM) data in a Geographic Information System (GIS) environment, offers significant advantages in terms of cost-benefit. The methodology applied proved to be adequate and easy to use. The slope of the municipality is predominantly undulating to strongly undulating. The conception of the results achieved in this study allows a consistent understanding of the morphometric behavior of the municipality of São João do Sabugi - RN, which can be used for adequate environmental planning.Item Dinâmica de uso e ocupação do solo em áreas de preservação permanente do Reservatório do Pirapama, Cabo de Santo Agostinho – PE(2019-07-11) Moraes, Maria Clara Gomes de; Silva, Emanuel Araújo; http://lattes.cnpq.br/2765651276275384; http://lattes.cnpq.br/7061662162165388Action on natural environments occurs in parallel with human evolution on the planet, so the absence of adequate planning associated with the disorderly growth of cities and agricultural activities directly influence the decharacterization and dysfunctionality of PPPs. In view of the above, the objective of this work was to raise the occurrence of conflicts of land use and occupation in the Permanent Preservation Areas of the Pirapama-PE Reservoir between 2003 and 2018, according to the protection parameters established by environmental legislation. To do so, the APPs were delimited using the software Google Earth Pro and through the software QGis 2.14 was generated the shapefile for trimming the study area. Therefore, using images from the Landsat 5 and 8 satellites, TM (Thematic Mapper) and OLI / TIRS (Operational Land Imager / Thermal Infrared Sensor) with resolution of 30 meters, from 2003, 2010 and 2018, it was possible to map 5 classes of use and occupation of the soil in the 1: 35,000 scale in the QGis environment. The supervised classification of the images was done through the SCP plugin, and the accuracy of this mapping was evaluated by the Kappa Index. The evolution of the conflicts of use of the soil was obtained by means of the overlap of the maps generated with the classifications of the images. In possession, it was possible to determine the amount of preserved APPs and of area in disagreement with the legislation. The results showed that anthropic activities impacted almost 4.65 km² of native vegetation, equivalent to 33.3% of the study area. There was a significant reduction in the "forest preserved" class of land use for agriculture, urban area and exposed soil, from 90.4% in 2003 to 81.8% in 2010 and decreased to 66.7% by 2018 (17.6%) of the area, being the main occurrence of land use conflict of PPAs. By the Kappa index, the image ratings of the years 2003 and 2010 obtained the "very good" result, being 0.62 and 0.80, respectively, while the classification of the year 2018 obtained an "excellent" result, corresponding to 0 , 82 by index. Considering the decrease of the time for territorial monitoring, the importance of the study of the dynamics of land use and occupation through remote sensing for the management and inspection units is highlighted. Such studies are essential for making decisions regarding the management and maintenance of these areas in front of legislation and environmental preservation.Item Dinâmica de uso e cobertura da terra em floresta tropical seca no sertão pernambucano(2019) Barreto, Thiago Henrique Lagos; Silva, Emanuel Araújo; Salami, Gabriela; http://lattes.cnpq.br/3382724343640625; http://lattes.cnpq.br/2765651276275384; http://lattes.cnpq.br/9289202346311385In view of the increasing degradation that the Caatinga suffers in recent years, mainly in Pernambucano, this work aimed to map the disturbance in dry tropical forest using medium resolution images in the city of Salgueiro-PE. For this, images of LANDSAT 5 satellite were used in the 1998 and 2008 periods, and LANDSAT 8 to 2018. All scenes were georeferenced by the Datum SIRGAS 2000 and the bands used were 5, 4 and 3 for LANDSAT 5 , and the bands 6, 5 and 4 for LANDSAT 8, generating the classification of six classes (forests, agriculture, exposed soil, water bodies, riparian forest and infrastructure) using the QGIS software and the Semi-Automatic Classification Plugin (SCP). The accuracy of the maps was verified by the Kappa coefficient. The three-year maps were crosschecked to quantify remaining forest, forest expansion and deforestation. The Kappa index found for 1998 was 0.72, for 2008 and 2018 it was above 0.8, indicating very good accuracy for 1998 and excellent for 2008 and 2018. In these 20 years, classes that declined in size were forests, exposed soil, bodies of water and infrastructure, being a perimeter of 48.2 km², 84.9 km², 9.4 km² and 16.7 km², respectively. While agriculture and riparian forest increased 81.0 km² and 78.1 km², respectively. The decrease of the exposed soil is due, mainly, to a period of extreme drought in 1998, where there was only rainfall in the first two months. The decrease of the forests is due to several factors, such as population increase, vegetal extraction in the region, an industrial pole of red ceramics and the transformations of the Caatinga in agricultural areas. When observed the changes that occurred in the classes in these 20 years, the remaining forest was 438.1 km², the forest expansion of 181.1 km² and the deforestation of 229.5 km², indicating a good regeneration capacity of the forests and a damaging process of deforestation in this municipality. Therefore, it is concluded that Salgueiro underwent intense anthropic actions harmful to vegetation during 1998 and 2018, provoking deforestation, which provides socioeconomic and environmental problems, thus showing the urgent need for efficient public action.Item Delimitação e caracterização morfométrica da sub-bacia do Rio Gurjaú com o uso de geotecnologias(2018) Silva, Júlia Andresa Freitas da; Duarte, Simone Mirtes Araújo; http://lattes.cnpq.br/5876968040869585; http://lattes.cnpq.br/5132661779293685The study of the characteristics of a river basin allows one to understand its dynamics and to carry out an adequate management of its resources. With this in view, the present work aimed to characterize morphometrically the sub-basin of the Gurjaú River, in the Metropolitan Region of Recife -PE, through geotechnologies. In this study, a shapefile of the municipalities of Pernambuco was used, which assisted as a visual reference to locate the water course, and an SRTM image of spatial resolution of 30 mx 30 m, referring to the study area, provided by the National Institute of Space Research (INPE). Using Google Earth Pro, the Gurjaú River was identified. The image was imported into the free software Spring 5.5.4 ̧ where the isolines, the water flow directionmatrix and the flow matrix accumulated in each cell were generated, which were used to delimit the sub-basin. The area and perimeter of the basin were measured and the water flowswere vectored. The altitude was rated 30 by 30 meters. The gradient grid was generated, and the maps of hypsometry and slope were elaborated. The following morphometric parameters were calculated: compaction coefficient (Kc), circularity index (Ic), shape factor (Kf), elongation ratio (Re), drainage network, drainage hierarchy, drainage density (Dd) (Dh), torrentiality coefficient (Ct), maintenance coefficient (Cm), roughness index (HD) and relief ratio (Rr). The minimum altitude found in the sub-basin was 0 m, and the maximum altitude was 370 m. The most representative altitude class along the sub-basin was between 90 and 120 m, while the least representative was between 360 and 390 m. The minimum slope was 0% and the maximum found was 181.57%. The relief of the region is mostly wavy, presenting between 8% and 20% of slope. The area found was 148,115 km², the perimeter was 68,948 km and the axial length of the sub-basin was 22,723 km. The values obtained for the morphometric characteristics were: Kc = 1.586; Ic =, 392; Kf = 0.287; RL = 0.604; total length of watercourses = 110,226 km; hierarchy of channels = 4th order; Dd = 0.744 km.-2; Dh = 0.317; Ct = 0.235; Cm = 1344.09 m².m-1; HD = 0.277; Rf = 16.28. It was possible to notice that the sub-basin of the Gurjaú River has an elongated form, with slopes not very steep, and therefore is not subject to floods.