Engenharia Florestal (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/15
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APP - Artigo Publicado em Periódico
TAE - Trabalho Apresentado em Evento
TCC - Trabalho de Conclusão de Curso
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Resultados da Pesquisa
Item Estoque de carbono e fertilidade de tecnossolos originados de rejeitos da mineração de scheelita no semiárido brasileiro(2024-02-21) Nunes, Gustavo Vieira; Silva, Ygor Jacques Agra Bezerra da; http://lattes.cnpq.br/0904824873761236; http://lattes.cnpq.br/0011472973408477Studying technosols is essential to understand their potential for agricultural production, reclaim degraded areas, and sequester carbon. In the semi-arid region of Northeast Brazil, the largest scheelite mine in South America is located, and waste from this activity has been accumulating since the 1940s, impacting environmental quality. Although technosols originating from mining waste are studied globally, information on the fertility and organic carbon stock of these soils is scarce in Brazil, especially in semi-arid regions. Therefore, this study aims to assess the carbon stock and fertility of technosols constructed 40 years ago from scheelite mining waste in the Brazilian semi-arid, with the purpose of evaluating their potential for agricultural use and carbon sequestration. Forty composite samples were collected from the surface horizons (0-30 cm) of technosols constructed from waste at the Brejuí Mine, located in the municipality of Currais Novos, in the semi-arid region of the state of Rio Grande do Norte. The average soil density was 1.38 kg dm-3, potentially not negatively impacting the physico-hydraulic properties of the technosols. The average pH in water and KCl was 8.53 and 8.07, respectively, with a mean ΔpH of -0.47. The alkalinity in technosols, due to carbonates in tactites and marbles (materials forming the waste), may restrict plant growth by causing nutritional imbalances and micronutrient deficiencies. The average available concentrations of P (2.73 mg kg-1) and K (0.14 cmolc kg-1) are limitations for agricultural activity, requiring strategies to increase these nutrients to improve agricultural viability. The average organic carbon concentration in technosols was 24.11 g kg⁻¹, more than double the average observed in Caatinga soils, which is typically around 9.3 g kg⁻¹. The technosols derived from scheelite mining achieved carbon stocks of up to 222.93 Mg ha-1, surpassing Vertisols (60.08 Mg ha-1) by over three times and more than doubling the national average (99.39 Mg ha-1), highlighting their potential for carbon sequestration in the semi-arid region. This study, given the scarcity of information on technosols derived from mining in Brazilian semi-arid environments, contributes not only to the scientific community but also to policy-makers, emphasizing the importance of efficient mining waste management in the recovery of degraded areas, sustainable agricultural production, and carbon sequestration, crucial for mitigating climate change.Item Sequestro de carbono por árvores urbanas no bairro das Graças em Recife - PE(2023-09-12) Silva, Alana Gabriela Mira; Lima Neto, Everaldo Marques de; http://lattes.cnpq.br/6791561445213969; http://lattes.cnpq.br/4205887441577169The rapid expansion of urban areas, coupled with changes in land use, has undermined the presence of native vegetation and this alteration occurs concurrently with the escalation of Greenhouse Gas (GHG) emissions. In response, urban afforestation is employed to mitigate the consequences arising from the disorderly growth of urban centers. The present research aims to estimate and quantify the carbon sequestration potential through street tree planting in the Graças neighborhood, Recife - PE. The study was based on urban forest inventory and the collection of dendrometric variables (height, DBH, canopy area), followed by data tabulation using Microsoft Excel software. Using the inventory data, carbon sequestration per species was estimated using the I-tree eco platform and allometric equations employed by the platform to obtain carbon sequestration values. A total of 137 tree individuals distributed among 30 different species were inventoried, collectively sequestering 4.04 tons/year of carbon from the atmosphere. Determination of the total sequestered carbon considered variables like total height, diameter at breast height, and dry weight calculated by the platform itself. The species with the highest carbon sequestration potential was Senna siamea (1.15 tons/year), followed by Licania tomentosa (0.65 tons/year) and Filicium decipiens (0.32 tons/year). Thus, the implementation of tree-covered areas, whether street tree planting or parks and green areas, with a focus on species with rapid growth in both height and diameter, is highlighted.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 Estimativa do sequestro de carbono no Parque da Jaqueira, Recife/PE(2022-05-27) Melo, Anne Karoline Lima de; Lima Neto, Everaldo Marques de; http://lattes.cnpq.br/6791561445213969; http://lattes.cnpq.br/1734941378825031