TCC - Engenharia Florestal (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/436
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Resultados da Pesquisa
Item Estoque de carbono em fragmento florestal na Zona da Mata Sul do estado de Pernambuco(2021-02-25) Mossio, Lucca Silveira Mousinho; Freire, Maria Betânia Galvão dos Santos; Lima, Tarcísio Viana de; http://lattes.cnpq.br/0814281560377954; http://lattes.cnpq.br/2636653493262436; http://lattes.cnpq.br/7141821256778001Native forests have a strong presence in climatic change mitigation on the planet, mainly on carbon sequestration. However, Atlantic Forest suffered a historical fragmentation process linked to exploration, resulting in carbon stock modification of this ecosystem. Thus, the objective of this research was to evaluate the carbon stocks in soil and vegetation of an Atlantic Forest fragment in Pernambuco, Brazil, assigning a comparative relation for edge and forest areas. The study was performed in an area from Usina Trapiche, in Sirinhaém, Pernambuco, in an Atlantic Forest fragment. Were evaluated the carbon stocks, soil organic carbon, soil labile carbon, tree and litter biomass in edge and forest situations, in plots of 250 m2. In each plot, soil samples were collected in three different depths (0-10, 10-20 and 20-40 cm), also collecting 0,25 m2 of litter in each plot and data from a phytosociological study were used to estimate the above-ground plant biomass. For statistical analysis, were performed F test and Tukey test, at 5% probability, after data treatment for normality test and homoscedasticity, on SAS and Sisvar software. There was significant difference in contents of soil organic carbon (S.O.C) and carbon stocks of soil in situation of edge and forest of the fragment, accepting the hypothesis of edge effect caused by fragmentation. However, this effect was not sufficient to have a difference in labile carbon. Was observed a major content and stock in the superficial layer of soil (0-10 cm), which is common in forest environments, mainly for the larger deposition of organic matter in surface. The above-ground biomass and litter biomass presented significant difference between edge and forest, possibly for being a heterogeneous environment and for edge effect existence in the fragment. Even with fragmentation, was observed that soil reservoir keeps stocking more carbon than vegetation reservoir, being the disturbance, up to the limits established by this study, less enough to alter the carbon storage and ecosystems services in a conserved area. So, understand the importance of the knowledge and preservation of native forests for the environment functioning as a carbon tank.Item Influência da taxa de aquecimento na produção do carvão da madeira de Eucalyptus spp(2019-07-12) Interaminense, Pedro Paulo Barros; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/7774231489365848This work aims to evaluate two carbonization marches and the fresh material collected in a Eucalyptus stand, located in Araripina - PE, in the northeastern backlands, using several clones who being homogenized to evaluate the practices. The Eucalyptus' samples were transformed into chips and underwent a drying process in an oven regulated at 65ºC ± 5ºC for 48-72 hours, until they reached constant weight, obtaining the moisture content and bulk density. Part of the biomass was intended for immediate chemical analysis and to estimate the superior calorific value, and the rest was used to the carbonization process. The gravimetric yield, immediate chemical analysis, and estimation of the superior calorific value of the charcoal produced were determined. Regarding the immediate chemistry analysis, it was possible to observe the reduction of volatile material contents and increase of fixed carbon after the carbonization process. The estimated calorific value was 4357.35 kcal.kg-1 for the fresh sample and 7220.28 kcal.kg-1 for the first march and the second march, related to the charcoal, was 7265.15 kcal.kg-1. Thereby, the second gear is better to use as charcoal because it has a shorter carbonization time and it has the same quality when compared to the first gear for the variables used.Item Rendimento gravimétrico e análise imediata do carvão vegetal produzido em um protótipo de forno metálico(2019-12-11) Almeida, Drielly Camilla Leal de; Braz, Rafael Leite; http://lattes.cnpq.br/7332493832361305; http://lattes.cnpq.br/8868900725139080Construction waste that is of wood plant origin can and should be reused as raw material for the production of charcoal for domestic use. These forest residues, which are used for power generation, can generate income, and it is also an environmentally sound practice that adds value to activities of little relevance. Carbonization is a process of decomposition of wood that occurs by increasing the temperature resulting in a solid material that is charcoal. In carbonization the vegetable biomass releases water and generates some gases resulting from burning that are mostly lost in the atmosphere. It is important to study the material resulting from carbonization in the use of a better use in energy production. Where this study brings the carbonization efficiency of the plant material characterizing it according to the physical properties that were evaluated: the carbonization yield was 30.76%, wood moisture content averaged 13.19 and coal average. 7.91%, volatile materials 23.12%, ash content 1.61% and fixed carbon 75.27%.