https://repositorio.ufu.br/handle/123456789/5161 Mon, 18 May 2026 03:31:11 GMT 2026-05-18T03:31:11Z https://repositorio.ufu.br:443/retrieve/4672bc0a-330e-4f33-bf70-5929c225a3bc/ https://repositorio.ufu.br/handle/123456789/5161 https://repositorio.ufu.br/handle/123456789/48663 Title: Uso, ocupação do solo e mudanças ambientais ocorridas entre 2013 e 2023 na represa de Miranda, Uberlândia, Minas Gerais Abstract: The main goal on this dissertation is to analyze the changes on the environmental dynamic and in the land use around the Miranda Dam, located in Uberlandia, Minas Gerais, from 2013 to 2023. This research seeks to comprehend the ecological degradation process from the expansion of human activities, like urbanization, agriculture and grazing, that have been contributing to reduce the forest coverage and increasing the fragmentation of natural habitats. Therefore, was used an integrated methodology, combining techniques of geoprocessing, temporal analysis of satellite images and field survey, with the aim of mapping urban sprawl, vegetation loss, erosion processes, siltation and the removal of permanent preservation areas, the rising disordered occupation have been aggravating the environmental impacts, increasing the ecosystem vulnerability. Also noteworthy, that the decrease in vegetation cover on the east and northeast areas around the dam have been strongly associated with the expansion of agricultural activities and grazing. Furthermore, the impermeabilization of the soil and new infrastructure buildings hinder water infiltration, favoring erosion processes. This research also strengthens the importance of implementing sustainable environmental management measures, promoting the recovery of degraded areas and ensuring compliance with current legislation. Adopting effective public policies, integrated with territorial management, is essential to preserve the water resources, the biodiversity and the resilience of the local ecosystems, ensuring the sustainable development of the region in the long term. Thu, 26 Feb 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48663 2026-02-26T00:00:00Z https://repositorio.ufu.br/handle/123456789/48656 Title: Estimativa de poluentes atmosféricos emitidos pela frota de veículos da cidade de Uberlândia/MG, no período de 2022-2023 Abstract: This study aimed to gather information on all vehicles registered in the municipality of Uberlândia-MG and to estimate the emissions of atmospheric pollutants, namely particulate matter (PM), carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (HC), carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O), generated by vehicular traffic within the urban road network for the years 2022 and 2023. A bottom-up methodology was employed for all pollutants, except for CO2, which was estimated using a top-down approach. The selection of pollutants was based on data availability from the vehicular emissions reports published by CETESB (2022 and 2023). The estimated annual average emissions were: 43.97 tons of PM, 2,246.18 tons of CO, 4,339.34 tons of NOx, 365.78 tons of HC, 1,486.44 tons of CO2, 311.67 tons of CH4, 196.14 tons of N2O, and 1,552,683.99 tons of CO2e, considering all the Uberlandia vehicle fleet. The results highlight high emissions of PM and NOx, primarily due to the heavy-duty vehicle fleet, and significant emissions of CO and HC, mainly from light-duty vehicles. These findings suggest the need for investments and incentives toward public transportation and the adoption of alternative fuels to diesel. The results are crucial for the atmospheric emissions inventory of Uberlândia, which, in turn, plays an important role in strategic decision-making aimed at improving urban air quality. Fri, 29 Aug 2025 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48656 2025-08-29T00:00:00Z https://repositorio.ufu.br/handle/123456789/48592 Title: Estimativas de parâmetros genéticos, correlações e índices de seleção em linhagens de alface crespa, roxa e biofortificada Fri, 13 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48592 2026-03-13T00:00:00Z https://repositorio.ufu.br/handle/123456789/48572 Title: Comportamento espacial dos atributos fisiológicos de sementes de soja de um campo de produção Abstract: Soybean seeds may exhibit distinct quality levels when produced in different management zones. This study aimed to evaluate the physiological attributes of soybean seeds and identify their variability and spatial distribution using geostatistical tools. Data were collected at the Glória Farm (Uberlândia, MG) and analyzed at the Seed Analysis Laboratory of the Federal University of Uberlândia (Umuarama Campus). Soybean seeds were harvested from 48 georeferenced points to determine their physiological behavior and spatial dependence patterns. The variability of physiological quality attributes from different zones was assessed through germination, accelerated aging, seedling emergence, electrical conductivity, and seedling length tests. Previously analyzed soil attributes, along with initial plant stand and seed yield, enabled the validation of management zones. Physiological seed quality is not uniformly distributed across the production field; therefore, geostatistics is an effective tool for determining the spatial distribution of physiological quality attributes in soybean seed production areas. Fri, 13 Mar 2026 00:00:00 GMT https://repositorio.ufu.br/handle/123456789/48572 2026-03-13T00:00:00Z