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Uso, ocupação do solo e mudanças ambientais ocorridas entre 2013 e 2023 na represa de Miranda, Uberlândia, Minas Gerais

Thu, 26 Feb 2026 00:00:00 GMT

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.

Estimativa de poluentes atmosféricos emitidos pela frota de veículos da cidade de Uberlândia/MG, no período de 2022-2023

Fri, 29 Aug 2025 00:00:00 GMT

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.

Potencial de azospirillum brasilense como condicionador de solo e promotor do crescimento do sorgo em campo

Mon, 01 Dec 2025 00:00:00 GMT

Title: Potencial de azospirillum brasilense como condicionador de solo e promotor do crescimento do sorgo em campo Abstract: Increasing agricultural production is inevitable to meet the growing global demand for food. However, the combination of climate change and anthropogenic pressures poses a serious threat to food security. The adoption of conservation practices and efficient land management enhances resilience and sustains soil health and ecosystem services. Therefore, the use of microorganisms in the formulation of commercial inoculants offers integrative benefits capable of improving agricultural productivity while promoting the efficient use of chemical fertilizers, thus representing a sustainable strategy. This study aimed to evaluate the potential effects of applying an Azospirillum brasilense isolate on soil fertility, microbial and enzymatic activities, and crop productivity under field conditions. A literature review was conducted to summarize the mechanisms and effects of this bacterial species on plant production. In addition, two field experiments were carried out using an A. brasilense isolate applied to two Red Latosols (medium- and clay-textured soils) within the Brazilian Cerrado biome under sorghum cultivation. The experimental design consisted of randomized blocks in a 2 × 6 factorial arrangement, including two treatments: (i) A. brasilense CCT-7831 and (ii) a control (without microbial inoculation), with six replicates. Statistical analyses were performed using analysis of variance (ANOVA) followed by Scott–Knott’s test (p < 0.05). The evaluated parameters included rhizospheric soil fertility, microbial and biochemical activity assessed through soil microbial respiration (SMR), and the potential activities of arylsulfatase, β-glucosidase, acid phosphatase, fluorescein diacetate (FDA) hydrolysis, microbial biomass carbon (MBC), and the metabolic quotient (qCO₂). Inoculation with A. brasilense reduced sulfur (S) content in sorghum tissues grown in medium-textured soil. Conversely, A. brasilense application enhanced sorghum yield in clay-textured soil. The inoculant decreased soil phosphorus (P) content in clay soil but increased copper (Cu), iron (Fe), and zinc (Zn) levels in medium-textured soil. Application of A. brasilense reduced MBC in medium-textured soil and acid phosphatase activity in clay soil. Inoculation showed positive correlations with MBC, FDA activity, and soil concentrations of S, K, and Cu, while negative correlations were observed with arylsulfatase, β-glucosidase, acid phosphatase, and the contents of B, S, Cu, P, Mo, Fe, and Ca. Although changes in certain variables were detected following the application of A. brasilense, it is necessary to monitor the effects of selected strains used in inoculation and co-inoculation under different soil conditions and seasonal variations to support the sustainable development of environmentally sound management practices that minimize dependence on chemical fertilizers and pesticides.

Ações de sustentabilidade da Universidade Federal de Uberlândia na gestão de resíduos sólidos

Mon, 25 Aug 2025 00:00:00 GMT

Title: Ações de sustentabilidade da Universidade Federal de Uberlândia na gestão de resíduos sólidos Abstract: Humanity has sought solutions to everyday problems through sustainable practices, but balancing economy, society, and the environment remains a challenge for citizens, companies, and public bodies alike. Public authorities, in particular, must implement actions that ensure the integration of socio-environmental issues into the decision-making process, especially in the development of public policies. Thus, the implementation and monitoring of sustainability actions are fundamental in companies and organizations across all sectors of society. From this perspective, this study presents, in chapters, literature reviews on topics such as reverse logistics, instruments for achieving sustainability, and solid waste, as well as an analysis of sustainability initiatives implemented at the Federal University of Uberlândia (UFU) and in the management of the main solid waste generated by the daily activities of professors, students, technicians, and outsourced staff. The aim was to identify opportunities for future implementations of reverse logistics programs, allowing the reintegration of this waste into the production process or its proper disposal, in order to outline the institution's current sustainable scenario. Several questions were raised: What types of waste are generated? How is this waste disposed of? Is the reuse of materials through selective collection a practice that has been adopted? The methodology was developed in four phases aiming to collect information, discuss related aspects, and organize results and perspectives for improvement and advancements in solid waste management. Regarding environmental education, considering the existence of environmental disciplines in courses offered by UFU (Federal University of Uberlândia), it was observed that 52.97% of undergraduate courses offer at least one discipline related to the environment. Actions should be promoted with constant campaigns to broaden the reach of socio-environmental awareness among students. There has been significant growth in environmental projects, programs, and events over the years. Concerning policies and higher education institutions, the organizational structures of sustainability in Minas Gerais federal universities reveal different approaches and implementation strategies. Of the 11 universities in Minas Gerais, 7 have a Sustainable Logistics Plan, and only 3 have adhered to the Environmental Agenda in Public Administration (A3P). Regarding waste management, UFU has achieved notable progress in reducing the consumption of materials such as paper, toner, and used cups. Between 2014 and 2022, paper consumption fell from 57,203.95 kg to 8,577 kg, and toner consumption decreased by up to 85%. Regarding selective waste collection, the institution, through partnerships with Associations of Waste Pickers and Recyclers in Uberlândia, ensures the proper disposal of dry waste such as paper, plastic, cardboard, PET bottles, scrap metal, and rejects. However, there is still no comprehensive system for waste such as used cooking oil, writing instruments, discarded small electrical appliances, and everyday items like dishwashing sponges, which already have reverse logistics systems in other institutions. Therefore, it was possible to diagnose the role of logistical plans and public policies at UFU (Federal University of Uberlândia) that promote the expansion of solid waste management actions, including reverse logistics, as already occurs individually in other federal universities.