Navegando por Assunto "Geotecnologia"
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Item Acesso aberto (Open Access) Análise da Bacia Hidrográfica do Rio Itacaiunas (BHRI): subsídio ao planejamento ambiental(Universidade Federal do Pará, 2021-02-22) SILVA, Ronis Cley Fontes da; ARAÚJO, Alan Nunes; http://lattes.cnpq.br/5369542452826838; PIMENTEL, Márcia Aparecida da Silva; http://lattes.cnpq.br/3994635795557609; https://orcid.org/0000-0001-9893-9777The Itacaiunas River Basin (BHRI) has its source in the main channel located in the Serra da Seringa, in the municipality of Água Azul do Norte, state of Pará. Much of the economic resources come from mineral and agricultural exploration; consequently, the basin also faces strong environmental impacts arising from this and other activities linked to the economic use of its natural resources. With this information and others in mind, this dissertation aims to analyze the landscape dynamics in the Itacaiunas River Basin, through the application of bibliographic review methodology, cartographic elaboration, morphometric characterization, land use and occupation and diagnosis aiming subsidize environmental planning. The theoretical basis was based on the discussion about the geoecology of the landscape, highlighting the Landscape as a category of geographic research, in addition to the discussion on hydrographic basins in environmental management. The research covers three levels of analysis: characterization of the social and environmental aspects of BHRI; verification of information extracted from vector and matrix data for physiographic and fluviomorphological characterization of the basin, a stage in which it is intended to apply the morphological and vegetative indices; and the elaboration of the diagnosis and prognosis for BHRI. The research results present important data on this spatial cutout, primarily on environmental elements in addition to socioeconomic data. Subsequently, the morphometric data of hypsometry, slope, compartmentalization in high, medium and low course were analyzed, and also the hierarchy data of the channels, confirming a 5th order drainage, in addition to the morphometric data from which the conditions of susceptibility to floods. On the classes of land use and occupation, through the analysis of Landsat 8 Oli sensor images, acquired on 06/28/2020, in orbits 223, 224, 225 and points 65, 64, 4 classes were identified: Water ( 0.228%), Ombrophilous Dense Forest (41.934%), Agriculture (56.625%) and Non-Agricultural Anthropic Area (1.147%), making it possible to correlate these data with vegetative indices, presenting the spectral thresholds for dense vegetation, little vegetation and without vegetation the NDVI, SAVI and IAF values respectively (0.6729715 / 1,009 / 1,609), (0.0189145 / 0.028 / - 1.122), (-0.308115 / -1.492 / -2.949). Finally, regarding the diagnosis of the identification of environmental problems in the basin, they confirm a high degree of anthropic intervention, due to the intensive nature of land use and occupation, aggravated mainly in agricultural areas, modifying the landscape by removing vegetation cover, in addition to cause changes in the hydrological patterns of the basin. In turn, the transformations of the landscape are the result of the interaction of man with nature, which shows the need to carry out an integrated, participatory planning, according to the current scenario in the referred basin, raised through consistent and sufficient data to propose solutions. legal, through the types of land use, aiming at an ideal scenario, with the intention of reversing the current situation of the referred basin.Item Acesso aberto (Open Access) Geotecnologias aplicadas ao ordenamento territorial pesqueiro industrial do estuário amazônico(Universidade Federal do Pará, 2012-06-12) SILVA, Christian Nunes da; ALMEIDA, Oriana Trindade de; http://lattes.cnpq.br/0325909843645279; MCGRATH, David Gibbs; http://lattes.cnpq.br/4373475491613670The present work aims to reflect on the fishing activity geographically, with some categories of territorial analysis that can be worked in fishing, taking into consideration the livelihoods of fishermen, the territorial scope of its influence on fisheries and the mechanisms of spatial representation in environment computer that are currently available, capable of achieving the spatial patterns of coverage. This analysis was based on the consideration that the fishery is of utmost importance for the supply of urban centers, the main source of livelihood and income of populations of fishers in the Amazon region. New methodological procedures and technological processes have generated a significant fishing increasing both the apparent exhaustion of resources, and the recognition and functional protein, fish products that have gained in recent years, as a means of proper nutrition for the maintenance of quality of the consumer. Thus, the main objective of this study is to verify and discuss the feasibility of using geotechnology in the current planning model that can be seen fishing in the Amazon region, seeking to understand how this land use in fishing may include: geo; information about equipment fishing used to catch fish, knowledge of fishermen and the Brazilian legislation. Literature searches and field (in the Caeté bay and river Ituquara, Pará state), integrated to work in the laboratory, using geoprocessing techniques of remote sensing products allow mapping the dynamic moment of some socio-spatial relationships and structural by passing fishing, so it is important to focus on mechanisms of assistance to the planning of fishery resources. The technology called “geoinformation” science, has shown greater visibility in environmental studies and therefore should be included in the fishing industry as an important mechanism for monitoring, surveillance and research for the future management strategies.Item Acesso aberto (Open Access) Trajetórias tecnológicas e sistemas agrários: qualificação territorial utilizando geoprocessamento em Paragominas e Santarém/PA(Universidade Federal do Pará, 2014-05-16) TANCREDI, Nicola Saverio Holanda; COSTA, Francisco de Assis; http://lattes.cnpq.br/1820238947667908The Amazon has been observed mainly through the deforestation phenomenon, using traditional resources from remote sensing as quantification of deforested area and its subsequent annual increasing, which sounds to be an effective methodology. Confirming this argument, I noted in a survey with 16.591 environmental fees applied by IBAMA/PA in the period 2000 to 2008, that more than 85,0% were related with biodiversity (flora), and specifically in the year of 2008 at the jurisdiction of IBAMA Santarém (west of Pará), almost 60% of fees had linkage with deforestation, identified by remote sensing. Analysis using only satellite images are not enough to identify elements of surface, with a poor contribution to the understanding and intervention of reality. It were interviewed and vectorized479 rural properties in the region of Paragominas and Santarém, state of Pará, which have historical land usedistinguished, qualifying them by technological trajectories in the Costa`s sense, correcting distortions of economic development, aggregating information at remote sensing data.It was applied geotechnologic resources of landscape metrics and were built a cell database integrated with statistics and algorithms of probabilistic optimization, associating classification non supervised isodata (validated with kappa index = 0,87, considered “excellent”) with production types collected in the field, generating an integrated classification (kappa index = 0,78, considered "very good"). In Paragominas were qualified 3 different types of technological trajectories, trajectory peasant.T8 (dominated by temporary culture), peasant.T3 and employer.T4 (specialized in beef cattle). In the region of Santarém, appeared trajectory peasant.T2 (high presence of permanent and temporary culture and agro forestry systems) and employer.T7 (mutation of T4, enhancing the participation of temporary cultures). The methodology was considered successful, spatializing rural properties by technological trajectories and generating land use classes more adequated, as temporary culture and pasture, but in the isodata classification was only “agropecuary”, resulting a more realistic viewof production activities developed in the investigated area, materializing the generation of spatial information by integrating data from different sources and increasing the capability of pixel analysis.