Os objetivos deste trabalho foram identificar e quantificar o uso da terra na Bacia Hidrográfica do Córrego do Bezerro Vermelho no Município de Tangará da Serra, MT, por meio das imagens Landsat TM dos anos 1984 e 2011. As imagens foram georreferenciadas, classificadas e processadas no software Spring e as classes temáticas, quantificadas e editadas no software Arcgis. O grau de antropização foi verificado através do Índice de Transformação Antrópica. Foram identificadas cinco classes, cobertura florestal, vegetação secundária, agricultura, pastagem e lâmina de água. Os resultados indicaram diminuição nos percentuais das classes: de 35,35% na cobertura florestal, de 11,78% em pastagens e de 100% na vegetação secundária, decréscimos esses relacionados ao aumento de 248,75% da agricultura. Portanto, este trabalho evidenciou alteração drástica da paisagem e, por meio do Índice de Transformação Antrópica, verificou-se aumento de 4,75 para 5,88 entre os anos 1984 e 2011, ou seja, a área de estudo encontrava-se na classe regular e passou a ser degradada, fato esse decorrente, sobretudo, das atividades antrópicas, associadas à expansão da agricultura.
O presente trabalho tem como objetivo analisar a fragilidade ambiental da bacia hidrográfica do Rio Queima-Pé, localizada no município de Tangará da Serra, estado de Mato Grosso (Centro-oeste, Brasil), para subsidiar ações de planejamento ambiental. Para a caracterização da área de estudo foram utilizadas cartas temáticas de geomorfologia, pedologia, pluviosidade, uso da terra e cobertura vegetal. A metodologia adotada foi operacionalizada com o software ArcGis da Esri. A bacia do Rio Queima-Pé apresenta 11% da área com fragilidade ambiental alta, em decorrência do uso da terra que oferece baixa proteção ao solo. Conclui-se que a utilização da terra com pastagens e cana de açúcar em solo argissolo merece atenção especial, pois estes apresentam alto teor de areia em sua composição, favorecendo a ocorrência de processos erosivos.
Urban parks play a key role in improving the environmental quality standard of cities, whether for the ecological service provided or the promotion of people's health and well -being. The objective of this study was to estimate the variables that determine the frequency of visits to Parque do Sabiá complexin Uberlândia municipality, Minas Gerais state, Brazil, based on the Travel Cost Method. Were conducted 385 interviews, being 206 valid, and described a logit model, expressed by the variable response rate of visitation (rv) and the independent variables, which spanned the socioeconomic aspects, the costs of travel and visits to the site, and the individual perceptions. Among the statistically significant variables, the profile that declares the male sex, with a higher level of schooling, and that travels alone to the site is more predisposed to visit the park. The extent to which departs for residential areas more distant, is reduced by 3.3% the rate of visitation, and 11% if the option is per vehicle, propelled by influencing the cost of travel of users. The individual perceptions of users influenced the rate of visitation, due to their ecological role partner (9,3%), the benefits in improving the quality of life (6,8%) and the sports practice (20,7%). The d emand for the park can be increased with improvements in access and reducing the cost of travel, making the option of visitation more attractive. However, the demand for the functions of the park competes with the perception of improvement of squares, gyms and outdoor walking tracks at other points of the city.
In thist study, land use and landscape quality were analyzed in the Queima-Pé river basin, Mato Grosso, Brazil. Land use and landscape quality were identified based on 3 m of spatial resolution images from GeoEye. For land use, manual segmentation and visual interpretation methods were used. Twelve map classes were identified and semi-perennial crops, temporary crops, pasture and native vegetation were the most significant ones. In terms of land use, the basin area contained 55.83% pasture, 26.06% crops, and 7.49% natural vegetation. Landscape analysis revealed that the study area contained 0.79% lower class, 87.80% medium-class, and 11.40% upper-class quality landscape. Through this analysis was determined predominance of the visual quality characterized as medium class, in the basin area. Keywords: Geotechnology; land use; environment. ResumoAnálise da qualidade da paisagem na bacia do rio Queima-Pé, Mato Grosso. Este trabalho tem como objetivo analisar o uso da terra e a qualidade da paisagem na bacia hidrográfica do rio Queima-Pé, Mato Grosso, Brasil. Foram utilizadas imagens de 3 m de resolução espacial do satélite GeoEye para elaboração do mapa de uso da terra e de qualidade da paisagem. Para a elaboração do mapa de uso da terra foi utilizada a segmentação manual e interpretação visual. Foram mapeadas doze classes temáticas, sendo as mais expressivas a lavoura semiperene, lavoura temporária, pastagem e vegetação natural. A pastagem está presente em 55,83% da área, as lavouras em 26,06% e a vegetação natural em 7,49% da área da bacia. A análise da paisagem permitiu verificar que a classe baixa qualidade da paisagem está presente em 0,79% da área da bacia, a classe média em 87,80% e a classe alta em 11,40% da área de estudo. Através desta análise verificou-se a predominância da qualidade visual caracterizada como média na bacia. Palavras-chave: Geotecnologias; uso da terra; meio ambiente.
This paper aimed to analyze the influence of land use on the quality of water in Uberabinha river basin in the city of Uberlândia (MG). Using geoprocessing techniques and remote sensing data, land use, soil type, slope and hypsometric maps were drawn. Images were taken from the LANDSAT 8 satellite with 30 m space resolution, dated August 18, 2018, and from the Digital Elevation Model TOPODATA/SRTM together with the historical series data about water quality of the Uberabinha river, retrieved from Instituto Mineiro de Gestão das Águas (IGAM) and the Brazilian Ministry of Health. The data about water quality were organized according to the limits established by Conselho Nacional do Meio Ambiente (CONAMA) and international regulation. Uberabinha river basin is mostly used for agriculture. Concerning the water quality sampled from point PB 023, which was sixteen kilometers away from Uberlândia's sewage treatment plant (STP), the concentration of the variables totalscoliform index, Escherichia coli, sulfate, and phosphorus exceeded the limits set by laws between 2012 and 2018. Water quality data were collected on an annually basis, always in August. The land use influenced on the contamination of the basin water, especially, in the course that includes Uberlândia's urban area, due to a greater concentration of the parameters that indicate contamination of domestic and industrial water
The present study evaluated the perception of the urban population of Uberlândia/MG regarding the occurrence of notified dengue cases. A script of questions was developed that combined social, environmental, political and economic variables, which could explain, in the perception of the research participants, the current dengue scenario in the municipality. 384 randomized individuals living in the municipality were interviewed, from may to august 2019, through the survey of qualitative and quantitative data. The data obtained could compose a qualitative and quantitative model of NLR (Nominal Logistic Regression) that relates a set of predictors and a nominal response, and a set of co-occurrence maps of qualitative variables. The quantitative results showed that the female group correlates highly, significantly the set of variables determined in the research. In the outputs of maps of the qualitative models, the opposite decision of the preference preference groups (weak, moderate, good and high) was evident. Individuals who reported weak correlation of the proposed variables in determining the occurrence of notified cases of dengue showed a greater correlation between the codes "society" and "policies and local economy", attributing greater responsibility to the role of municipal public management in this scenario. The high and good correlation groups showed greater concern with environmental aspects, mainly regarding the issue of waste and urban pollutants. Therefore, it is concluded that in the quantitative model, there was a different pattern of responses, significantly among individuals declared in the research. And in relation to the quantitative data, the opposite decision of the preference response groups was evident. The role of the municipal public manager must consider the need for extension, inclusion and permanence of strategic actions in the areas most vulnerable to dengue in the municipality, given the fragility of health services and the scope of policies involving quality of life and environmental education.
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