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Navegando Mestrado em Ciências Ambientais (PRPG) por Assunto "Análise integrada da paisagem"
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Item Aplicação da dendrocronologia na identificação de processos erosivos e incêndios florestais nos parques estaduais Altamiro de Moura Pacheco e João Leite, Goiânia, Goiás, Brasil(Universidade Federal de Goiás, 2018-06-15) Oliveira, Thaynnara Borges; Momoli, Renata Santos; http://lattes.cnpq.br/4153268939426905; Faria, Karla Maria Silva de; http://lattes.cnpq.br/2186337194534589; Faria, Karla Maria Silva de; Ferreira, Manuel Eduardo; Chagas, Matheus PeresThe hydrographic basin of the Ribeirão João Leite (BHRJL) represents to the Goiás State an important sourceof water, responsible for supplying more than 50% of the population of the state capital, Goiânia, and contain two important conservation units of the Cerrado Biome. The overall objective of this paper was to evaluate the chronological evolution and impacts on vegetation caused by laminar erosion processes and/or linear and by forest fires in State Parks Altamiro de Moura Pacheco (PEAMP) and João Leite (PEJoL). The methodological procedures consisted in a multi-integrated assessment for the catchment area and the areas of the parks, being held for the basin: (1) the lifting of the physical attributes of the basin, (2) the morphopedologic Compatments, (3) The analysis of the susceptibility to laminar erosion and (4) Mapping of erosion of the basin, and in the area of the parks (including buffer zone): (5) sieve analysis of soil; (6) Mapping of fire risk to vegetation; (7) historical analysis of the occupation of the land use between 1985 and 2017; (8) analysis dendrogeomorfology and dendropirocronologia. The results indicated the presence of four compartments morfopedológicos, two were characterized as fragile by physical attributes natural; it was identified high susceptibility to the occurrence of laminar erosion processes and linear, confirmed by mapping of more than 3,000 erosions on BHRJL, being that the more critical areas coincide with the area where are the Conservation Units, which historically coexist with predominant use of pastures. The textural analysis of soil showed high content of the sand fraction, mainly fine sand and coarse sand in the soil inside the remainder in both dispersion in NaOH as the dispersion in water. This tendency occurs both in the horizon of the surface and the underlying horizons due to the profound transformation of quartz-rich rocks and poor in primary minerals converted into clay, compatible with the litology aluminoso Gnaisse, Metagranito And Quatzito. vThe mapping of fire risk indicates that the southern and southeastern portion of the remainder as critical areas for the event of a fire. The analysis of dendrocronológica 17 tree individuals of Cedar (Cedrela fissilis) And Copaíbas (Copaifera langsdorffii) indicated a high potential of these species in the area with a series with good index of intercorrelação (Cedar = 0,642; COPAIBA = 0,702). The analysis of dendropirocronologia indicated that the most powerful fires occurred in the decade of 1990, as the dendrogeomorfologia was not possible to correlate the time series with events longshore because was not observed inside of the parks erosion processes or traces of sedimentation, excepting the ravine near the highway and the ravine in inner raceway. In a general way the forest remnant requires greater supervision especially in high-risk areas the forest fire. The area of the park is an area of great fragility and excessive pisoteamento care should be taken to avoid that these processes to settle, because, the containment of same in sandy soil is quite costly and laborious.Item Dinâmica da estrutura da paisagem na microrregião do Vão do Paranã (GO)(Universidade Federal de Goiás, 2017-03-16) Ponciano, Tássia Andrielle; Faria, Karla Maria Silva de; http://lattes.cnpq.br/2186337194534589; Faria, Karla Maria Silva de; Ferreira, Nilson Clementino; Bueno, Guilherme TaitsonThe region of Vão do Paranã, inserted in the northeast (2000), is one of the three main centers of endemism in the Cerrado and goes through a process of fragmentation, which determines the ratings of potential and environmental vulnerabilities to promote appropriate policies of occupation. The study proposed here has as reference the integrated analysis of the landscape using the morphopedological compartments, to evaluate the dynamics of landscape structure in the microregion of Vão do Paranã. The methodology was based on the interpretation of Landsat images for temporal analysis (1984-2015) the use and soil coverage, with analysis of landscape structure through metrics and evaluation of morphopedological compartments. The results indicate that the characteristics associated morphopedological compartments the dynamics of occupation of the region respond by different forms of occupation of this area and the way it is structured the landscape in the region. Along the evolution of the use, the remaining vegetation concentrated in the eastern portion, coinciding with areas of emphasis more bustling, where currently the UC's; in the western portion, where the areas are more flat, there is a higher concentration of anthropic uses and high levels of fragmentation of the landscape. Although the agricultural expansion process has not yet strengthened in the region, the remaining areas were converted to 8.44% in anthropic areas, the pasture aptitude is present, however the agricultural areas have been growing exponentially in all compartments. The compartments favored, by relief, for anthropic occupation correspond to CMP I and III. The other compartments are indicated for the maintenance of environmental conservation.