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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

AnÃlise integrada na bacia hidrogrÃfica do rio Pirangi-CE: subsÃdios para o planejamento ambiental / Integrated analysis in river basin Pirangi-CE: subsidies for environmental planning

Juliana Maria Oliveira Silva 30 October 2012 (has links)
FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico / O objetivo deste trabalho à realizar uma anÃlise geoambiental na bacia hidrogrÃfica do rio Pirangi fornecendo um diagnÃstico integrado, avaliando as aplicabilidades de propostas de planejamento ambiental com base na vulnerabilidade, potencialidades e limitaÃÃes das unidades geoambientais e elaborar um plano de gestÃo que possa colaborar para a Ãrea de estudo. O trabalho foi desenvolvido em uma perspectiva da anÃlise integrada. As tÃcnicas cartogrÃficas juntamente com os levantamentos de campo possibilitaram a execuÃÃo do trabalho. Elaboraram-se mapas referentes a contextualizaÃÃo geoambiental da bacia na escala de 1:450.000 e a partir da integraÃÃo destes mapas, foi possÃvel delimitar as unidades geoambientais: PlanÃcie LitorÃnea, Tabuleiros PrÃ-LitorÃneos, Tabuleiros Interiores, Cristas Residuais, DepressÃo Sertaneja e PlanÃcie Fluvial. A etapa seguinte adentrou-se a bacia para a identificaÃÃo dos usos e ocupaÃÃes e consequentemente os impactos ambientais. O cruzamento de mapas possibilitou a identificaÃÃo e mapeamento da vulnerabilidade natural e ambiental da bacia em cinco graus: muito baixa, baixa, moderada, alta e muito alta e caracterizaram-se as potencialidades e limitaÃÃes da bacia. O trabalho foi finalizado com algumas propostas de planejamento ambiental atravÃs de um zoneamento ambiental com quatro zonas alÃm da delimitaÃÃo das Ãreas de PreservaÃÃo Permanente dos riachos, rios e corpos dâÃgua: PreservaÃÃo Ambiental, Uso Disciplinado e ConservaÃÃo Ambiental, Uso Intensivo e RecuperaÃÃo Ambiental. Espera-se que este trabalho possa contribuir para a Ãrea da anÃlise integrada em bacias hidrogrÃficas como subsÃdio ao planejamento ambiental. / The aim of this paper is to perform a geo-environmental analysis of the Pirangi watershed, including an integrated diagnosis for the evaluation of the applicability of proposals for environmental planning, based on vulnerability, potentialities and limitations of geo-environmental units, with the goal to elaborate a management plan that could collaborate with the area of study. This research was developed within the perspective of integrated watershed analysis. Cartographic techniques and field survey methods permitted the execution of this project. Maps on a scale of 1:450.000 that referred to the geo-environmental contextualization of the watershed were produced. The integration of these different maps helped to delimit the geo-environmental units: coastal plains, pre-coastal sedimentary rocks, sedimentary rocks in the backlands, residual crests, the Sertaneja depression, and fluvial plains. The following phase consisted of the identification of the land use and occupation and, consequentially, the environmental impacts in the area. The combination of the maps resulted in the identification and mapping of five natural and environmental vulnerability classes in the watershed (very low, low, moderate, high, and very high) and the characterization of the potentialities and limitations of the area. The study concludes with a set of proposals for environmental planning by environmental zoning consisting of four zones that go beyond the areas of permanent preservation of the creeks, rivers, and water bodies: environmental preservation, controlled use and environmental conservation, intensive use and environmental recovery. The intention of this research is to contribute to the field of integrated watershed analysis as support for environmental planning.

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