01.1 - Graduação (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2
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Resultados da Pesquisa
Item Curva Ambiental de Kuznets: uma análise macroeconômica entre crescimento econômico e impacto ambiental no período de 2000 a 2020(2025-03-14) Abreu, Ian Bernard Costa de; Carneiro, Ana Cristina Guimarães; http://lattes.cnpq.br/7641686662966528O presente estudo investiga a validade da Curva Ambiental de Kuznets (CAK) por meio de uma análise macroeconômica da relação entre crescimento econômico e impacto ambiental em 161 países, no período de 2000 a 2020. Utilizando dados em painel, o modelo de Efeitos Fixos foi adotado para controlar diferenças estruturais entre os países, garantindo estimativas mais robustas. Testes econométricos, como Hausman, Breusch-Pagan e Wooldridge, foram aplicados para validar a escolha do modelo e corrigir possíveis problemas estatísticos. Os resultados indicam que, ao contrário da hipótese tradicional da CAK, a relação entre PIB per capita e emissões de CO₂ é predominantemente positiva no período analisado, sem evidências claras de um ponto de inflexão que represente a redução das emissões nos países mais ricos. Isso sugere que o crescimento econômico, por si só, pode não ser suficiente para mitigar os impactos ambientais, reforçando a necessidade de políticas ambientais ativas. Esses achados contribuem para o debate sobre desenvolvimento sustentável e auxiliam na formulação de estratégias mais eficazes para a redução das emissões globais.Item Avaliação da contaminação por metais pesados em solos urbanos da Região Metropolitana do Recife: bioacessibilidade e correlação com NDVI(2024-03-07) Mello, Lucas José Souza de; Biondi, Caroline Miranda; Lins, Simone Aparecida da Silva; http://lattes.cnpq.br/7329862411748916; http://lattes.cnpq.br/8326756664758702; http://lattes.cnpq.br/8741487779369891Urban pollution by heavy metals is a subject of great socio-environmental relevance due to its potential deleterious effects on human and ecological health. Remote sensing, particularly the use of the Normalized Difference Vegetation Index (NDVI), emerges as a promising tool to assess vegetation health and potential impacts of soil contamination. In this regard, the present study aimed to evaluate the total contents and bioaccessibility of heavy metals in urban soil of the Recife Metropolitan Region and its chemical characteristics, obtain the NDVI of the sampled areas, and correlate it with the total metal contents analyzed. The research was conducted in the Recife Metropolitan Region (RMR), where samples of surface soil were collected in distinct urban areas and their points were georeferenced. The samples were analyzed for pH values, Organic Carbon, Soil Cation Exchange Capacity (CTC), and total heavy metal contents using Energy Dispersive X-ray Fluorescence (pXRF). Metal contents were compared with Quality Reference Values, and in vitro assays were performed to determine metal bioaccessibility in the soil. For NDVI estimation, images obtained from the CBERS-4A satellite with 8m spatial resolution were used, and buffers with radii of 55, 110, and 220m were applied to demarcate the area to be analyzed based on the sampled points. The results revealed high levels of heavy metals in urban areas of the RMR, exceeding the Quality Reference Values for the state of Pernambuco, yet the metals exhibit low bioaccessibility. Regarding the size of the analyzed area, there was no significant difference in relation to the values obtained. Additionally, a negative correlation was observed between most soil metal contents and NDVI, meaning that as NDVI increases, metal contents decrease.Item Eucalipto e biochar para fitoatenuação da poluição do solo por cádmio(2022-10-07) Paraizo, Taciana da Silva; Freitas, Eliane Cristina Sampaio de; Silva, Fernando Bruno Vieira da; http://lattes.cnpq.br/4818569008052606; http://lattes.cnpq.br/7525975084334972; http://lattes.cnpq.br/3371289066528888Phytoattenuation is a promising technique to mitigate the deleterious effects of heavy metals toxicity, promoting an environmentally safe management of land use with crops of economic value. The use of biochars can reduce the mobility of metals and provide improvements in soil fertility, promoting safe management in polluted environments. In this sense, the present work aimed to (i) evaluate the immobilization and compartmentalization of Cd in the soil with the application of doses of a filter cake biochar (CB); (ii) assess changes in soil fertility in response to biochar application; (iii) to evaluate the growth, mineral nutrition and Cd accumulation in two eucalyptus species (Corymbia citriodora and the hybrid Eucalyptus urograndis × Eucalyptus urophylla) cultivated in a polluted soil treated with biochar; (iv) to evaluate the amelioration of the stress caused by Cd through the physiological parameters of the plants treated with biochar; and (v) evaluate the regeneration of polluted soil quality through microbiological indicators. Two experiments were carried out sequentially: the first experiment was a sorption assay. The soil was incubated with doses of biochar (0, 2, 4, 8, 12, 16, 24 and 30% m/m) for 64 days and at the end of this period, the availability and chemical fractionation of Cd in the soil were analyzed. and chemical attributes related to soil fertility; the second experiment was carried out in a greenhouse, with two species of eucalyptus grown in pots for 65 days in soil polluted by Cd, with and without the application of 5% CB. After cultivation, the growth parameters were evaluated; the levels of N, P and Cd in the tissues of the plants; chlorophyll a fluorescence parameters and photosynthetic pigments; and biomass together with soil microbial activity. From the results obtained, it was possible to infer that (i) the filter cake biochar can be indicated as a mitigating agent of soil pollution by Cd; (ii) both eucalyptus species associated with the application of 5% BT were tolerant to Cd toxicity; (iii) the cultivation of eucalyptus with the application of biochar promoted improvements in the microbiota of the soil polluted by Cd, a sensitive indicator of environmental quality; and (iv) phytotechnology using the eucalyptus species C. citriodora and the hybrid E. urograndis × E. urophylla plus the application with 5% CB showed potential to attenuate the effects of Cd in polluted areas.Item Avaliação quali-quantitativa dos planos de gestão de qualidade ambiental submetidos à Agência Estadual de Meio Ambiente de Pernambuco(2022-05-25) Barbosa, Sandra Dias; Freitas, Eliane Cristina Sampaio de; Souza, Viviannne Lucia Bormann de; http://lattes.cnpq.br/4200588308108261; http://lattes.cnpq.br/7525975084334972; http://lattes.cnpq.br/7636706492175339Faced with the needed to conserve biodiversity, actions to recover degraded areas and restore native vegetation are essential to ensure the maintenance and quality of natural resources. The recovering and forest recomposing program demand adequate planning, and in the state of Pernambuco the CPRH Environmental Quality Management Plan exists as an instrument for the control and monitoring of projects that have a polluting potential. The objective of this project was to carry out the evaluation of the Environmental Quality Management Plans - PGQA, in quantitative and qualitative terms, seeking to identify the species and families most indicated in the plans; the risk of species extinction; origin, endemism and distribution. The use of 259 species was identified, comprising 52 families, the most used being the Fabaceae Family. These have an average area of 70,316ha. Having found 23 species in common use among all the plans, with the highest occurrence being Hymenaea courbaril, the extinction analyzes were carried out within the CNCFlora databases where it was identified that 4 species were classified as endangered and IUCN red list where Vochysia oblongifolia and Senna multijuga were identified as endangered. It is worth mentioning that some species were not considered for a risk classification, considering that the absence of this information directly impacts the adoption and implementation of strategies for biodiversity conservation, which may interfere with the quantity and availability in the environment.