TCC - Engenharia Florestal (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/436
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Item Anatomia das fibras da madeira de clone de Eucalyptus urophylla plantado em diferentes espaçamentos no estado de Pernambuco(2022-10-06) Lima, Giúlia Stéphane Ribeiro de; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/4737148240951906Eucalyptus represents the most important exotic forest genus in Brazil and has been widely used in forest plantations. Knowledge of the anatomical characteristics of wood such as vessel volume and fibers are factors in the physical and mechanical properties of wood as well as indicative of the final use of wood. The anatomical structure of wood exerts a direct influence on wood density, which also directly influences anisotropy. As a result, these are closely correlated properties. The spacing has a great influence on the quality of the forest site, as it is a sum of the factors that interfere in the productivity of the forest stand. The present study aimed to anatomically analyze the morphology of the fibers of an eight-year-old clone of Eucalyptus urophylla, collected at the Estação Experimental do Araripe, in Araripina - PE, planted in different spacings (2 x 1m (T1), 4 x 2m (T2) and 3 x 2m (T3)) to qualify for use in pulp and paper production. For, clone trees were used, five in each plantation, where a sample composed by treatment was carried out. The preparation of the samples consisted of the dissociation of wood fragments, carried out by means of a macerating solution. The operations were performed through the provisional slides, using an optical image acquisition system with the R 25 image acquisition system. ImageProPlus software was used to capture images and measure the fibers. The Runkel Index, the Felling Index were calculated and the Coefficient of Flexibility, Coefficient of Stiffness and the Wall Fraction of the treatments were determined. The determination of the basic density was obtained through the relation of the dry mass and its saturated volume. The fiber dimension values were compared to each other with significant mean differences between treatments, which demonstrate to be a selection of a spacing. ideal in order to achieve greater productivity. Results were obtained and approved for the presentation, as it presents characteristics with similar characteristics. Protective and paper protection fit adjustments protected when compared to spaces, treatment 2 being with protection and paper reinforcement.Item Ajuste e comparação de equações hipsométricas em um clone híbrido de Eucalyptus urophylla plantado em diferentes densidades populacionais, na Chapada do Araripe(2021-07-15) Modesto, Antonio Leonardo Sousa; Silva, José Antônio Aleixo da; http://lattes.cnpq.br/5674098794412714; http://lattes.cnpq.br/5254833654424335The work aims to evaluate the influence of different population densities on the adjustment and selection of hypsometric models in an experimental planting of an eight-years-old Eucalyptus urophylla hybrid located in the Gypsum Pole of Araripe-PE, indicating the one(s) that best describes (m) the height-diameter ratio for each spacing. The experiment was carried out at the Experimental Station of the Agronomic Institute of Pernambuco - IPA, located in the municipality of Araripina, with geographic coordinates 07 ° 27'37 '' S and 40 ° 24'36 '' W and altitude of 831 meters. The predominant climate according to Köppen is BSh, hot and dry low latitudes, with summer rains. The data used came from an experiment consisting of three clones C41 - Hybrid Eucalyptus urophylla, C11 - Hybrid Eucalyptus brassiana and C39 - Hybrid Eucalyptus urophylla), however, only clone C39 was used, because it is the most productive. The clone was planted in five different population densities (2m x 1m, 2m x 2m, 3m x 2m, 3m x 3m and 4m x 4m) with four replications distributed in a completely randomized design. Five hispsometric models were adjusted (Henriksen, Trorey, Prodan, Stoffels and Silva). To select the best model, four validation tests were used: Schlaegel fitting index (FI), standard error of estimate (Syx), Furnival index (IF) and the graphical distribution of residuals. In general, it was observed that all models had a good dendrometric ratio for total height as a function of diameter at breast height (DBH), in all densities studied. Schlaegel's fitting index, ranged from 0.8504 to 0.9857, explaining good correlation of the models in all spacings. The planting spacing did not significantly influence the adjustment of the models. The Prodan model was the most accurate with mean values of 0.9758 for the FI, 5.31% for the Syx% and 0.62 for the IF. Furthermore, according to the graphical analysis of the residues there was no tendentiousness in the data. Thus, the Prodan model is the most suitable for estimating the height of adult eucalyptus stands in theGypsum Pole of Araripe-PE, in all evaluated spacings.