http://localhost:8080/handle/prefix/52 2026-11-10T02:35:58Z http://localhost:8080/handle/prefix/168 Title: Assentamento informal “nova vida”: uma marca impressa na paisagem urbana de Boa Vista – Roraima Autor(es): Morais, Roseane Pereira Primeiro Orientador: Veras, Antonio Tolrino de Rezende Abstract: This research aims to analyze the perception of the landscape and socioenvironmental problems of the inhabitants of the informal urban settlement "Nova Vida", located in the western zone of Boa Vista. The theoretical approach was based not only on the bias of urban geography, but also on the valuation of the concepts that give identity to the cultural landscape. The research methodology began with a literature review and documentary on the concept of landscape and its application in the urban setting of Boa Vista. Then they work in the fields for the observation, description, georeferencing, and the application of questionnaires. The collected data were analyzed and organized through tables and graphs about the environmental perception of the residents. The making of the maps has occurred through programs of gis images of the collection of the Laboratory of Metrics of the Landscape of the UFRR, and Google Earth on the interface of the Quantum Gis 2.8.2. The results and conclusions show how the dynamics of the landscape modified by human actions in the core studied, the interactions between elements of natural and cultural areas of environmental risk in Boa Vista, which are the more serious consequences for the model of urban growth and undisciplined to the city and as the population entered in the process identifies himself as a citizen within the reality investigated. In addition, the main uses of the soil in the settlement were investigated, mainly in the areas near the water body, that exist in this environment, to evaluate the environmental degradations associated to incorrect behaviors with the natural elements of this system. Publisher: Universidade Federal de Roraima Tipo: Dissertação 2017-01-01T00:00:00Z http://localhost:8080/handle/prefix/154 Title: Mudança da paisagem gerada pela expansão urbana, zona norte da cidade de Boa Vista - RR Autor(es): Criollo Hidalgo, Shirley Johanna Primeiro Orientador: Souza, Vladimir de Abstract: The problem of accelerated process of urban expansion in recent decades in the city of Boa Vista-Roraima is a worrying situation in the context of conservation of natural resources and changes of landscapes. The urban dynamics of the city underwent great changes, making previously unoccupied areas occupied in areas unsuitable for housing. By means of Remote sensing techniques to analyze the changing landscape of the north side of Boa Vista, in the period from 1996 to 2016. To fulfill those objectives satellite images Landsat 5 TM sensor were used, CBERS and Landsat 8 CCD sensor 2 sensor OLI, which went through a treatment process and helped supervised classification, using the MAXVER procedure to obtain three thematic maps of land use and occupation of the area and identify the temporal analysis of landscape changes. These results were made with the help of ENVI 4.8 and ArcGis 10 software, in addition to field visits and literature review. For the map of use and occupation of the soil it was defined five classes: arboreal vegetation/forest, savanna, water, urban and exposed soil, the maps were generated identifying the areas mentioned within the three periods (1996, 2005 and 2016), seeking through this space representation to facilitate the analysis of the main lines of urban growth and the removal of riparian vegetation along the Cauamé River. It was noted on the maps of each period the urban class did pressure in relation to other classes (32.76% in 1996, 35.05% in 2005 and 2016 38.99%) and the appearance of exposed soil class also indicates a position of possible urban advance. The results include the urban growth rate in percent, for the years 1996 to 2005 increase of 6.97% and for the period of 2005 to 2016 of 11.28% increase. While the decrease of the riparian forest in the neighborhoods near the Cauamé River, considered one of the most important in the city, results were obtained in 1996 of 2.12 km2, for 2005 of 2.02 km2 and finally for the year 2016 a reduction of 1.80 km2. These geographical techniques allowed to understand that the situation of the city can become serious if not public or environmental agencies not to take the necessary actions in time. The importance of this research is to build updated knowledge and information that can help in the future to improve the environmental and urban planning of the city to allow your natural wealth and preserve have sustainable strategies. Publisher: Universidade Federal de Roraima Tipo: Dissertação 2017-01-01T00:00:00Z http://localhost:8080/handle/prefix/153 Title: Estudo das feições erosivas lineares na sede do Município de Pacaraima, RR Autor(es): Melo, Marta Clementina Silva de Primeiro Orientador: Tavares Júnior, Stélio Soares Abstract: The municipality of Pacaraima is located in the extreme north of Roraima, in the homonymous ridge, presenting morphologically tabular relief with great predominance of tables with flat tops. Its escarpments are limited, with extensive ravine pediments and the topography usually coincides with the geological structure, where most erosive processes are installed. . This research aimed to understand the processes generating linear erosive features at the host of the municipality of Pacaraima-RR, based on the analysis of the conditioning factors. Four gullies were selected, in three soil analyzes were performed from deformed and undisturbed samples collected on the walls of the incisions. The soil samples collected were analyzed for granulometry, mineralogy, soil density, particle density, total porosity, moisture, organic matter and soil pH, following the procedures described in EMBRAPA and IAC. Morphometric measurements were made regarding depth, width and length, beyond the identification of erosive microfeatures present inside the gullies. After the analysis in the field and laboratory it was observed that the emergence and evolution of the gullies are subordinated to a set of factors that are interrelated beginning with the abundant rains and concentrated during three months in the region, that when they reach the ground they find it unprotected due to The incipient vegetation, this favors the superficial flow through the steep slopes of the place, allied to these factors are the fragile soils, formed basically by saprolite material, coming from the volcanic rocks of the Surumu Group, composed basically of quartz, potassic feldspar, kaolinite and muscovite, Represented by a silty material. The sand fraction presents angular and subangular morphology. The Microfeatures found weaken the thalweg and slope of the erosive channels accelerating the advance of the erosive process. The results obtained allow to affirm that all the conditioning factors analyzed act mutually, sometimes one stands out to the others for the emergence and evolution of the linear erosive processes at the host of the municipality of Pacaraima. Publisher: Universidade Federal de Roraima Tipo: Dissertação 2017-01-01T00:00:00Z http://localhost:8080/handle/prefix/152 Title: Estudo da evolução da paisagem atual da Serra do Tepequém, município de Amajarí - Roraima a partir da análise de depósitos coluvionares Autor(es): Silva, Talita Suelen Carvalho Primeiro Orientador: Beserra Neta, Luiza Câmara Abstract: This research aims to understand the evolution of the current landscape mountain Tepequém, Amajarí - RR, from the colluvial deposits analysis. Field activities were carried out in order to characterize the deposition environments of colluvial sediments and sample collection. In laboratory was carried out treatment techniques and manipulation of digital images to create thematic maps highlighting altimetry morphometric parameters, slope and orientation of the slopes, as well as topographic profiles and spatial distribution of colluvial deposits. The colluvial sediments were subjected to particle size analysis, mineralogical, morphological and chemical by EDS. The top of the mountain presents altimetric variations caused by the existence of lowland areas, hills and hills, steep slopes, representing the steepest slopes of the mountain. Environments conducive to deposition of colluvial sediments, is the base of hills and hills, forming elongated or interception fringes. The colluvial sediments consist predominantly of sandy fraction and siltic sand, with average diameter, are very poorly selected, with a degree of positive skewness very positive, and kurtosis values platykurtic the leptokurtic. The grains of colluvial sediments have subangular morphology, still containing angular grains, subrounded and rounded. Exhibit abrasion surface cavities and cracks due to mechanical action. It has been found in the chemical analysis, the composition predominantly of SiO2 and less intense Fe2O3 and K2O plus MgO and TiO2. These data show the transport mass movement by crawling material detrital the short distance between the source area and deposition. Publisher: Universidade Federal de Roraima Tipo: Dissertação 2016-05-31T00:00:00Z