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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

Estimates of changes time space adjacent to roads in the amazon: case study BR 422 / Estimativas de mudanÃas espaÃo temporais adjacentes à rodovias na AmazÃnia: estudo de caso BR 422

Andrà Luis Fonseca Fontana 21 November 2011 (has links)
Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico / This paper presents a method for generating estimates of temporal changes in the surrounding area of a highway located in the Amazon, using the technique Cellular Automata and explanatory variables, only attributes of the land. The proposed model uses vector images (obtained from the National Institute for Space Research in Brazil), which are converted to grid type files â raster image, representing a series of spatial changes in the region of study. With this proposition, it is expected to assist decision makers in order to meet the requests of CONAMA Resolution 01, relating to environmental impacts, more specifically, as regards the construction of models which consider scenarios with and without the project, and that the process of construction / rehabilitation of roads can be made in view of the legal norms in order to minimize potential environmental and social impacts. The model generated from the CAs showed promise in generating future estimates of deforestation and a good quantitative and qualitative indicators to support the decision making process to consider future deforestation being caused by construction and / or paving of road in the Amazon. / Este trabalho apresenta um mÃtodo para a estimativa de mudanÃas espaÃo temporais no entorno de uma rodovia localizada na AmazÃnia, utilizando para tanto a tÃcnica AutÃmatos Celulares adaptada em ambiente SIG, onde as variÃveis explicativas do modelo serÃo somente os atributos do terreno. O modelo proposto usa imagens vetoriais (obtidas junto ao Instituto Nacional de Pesquisas Espaciais) que posteriormente sÃo convertidas para arquivos tipo grid â em formato raster, com a sÃrie histÃrica das mudanÃas espaciais na regiÃo objeto de estudo. Espera-se auxiliar os tomadores de decisÃo no atendimento das solicitaÃÃes da resoluÃÃo CONAMA 01/86 relativas à concepÃÃo de modelos que considerem cenÃrios com e sem o empreendimento, e que os processos de construÃÃo/recuperaÃÃo de rodovias possam ser realizados atendendo Ãs normas legais, visando minimizar os potenciais impactos sÃcio ambientais. O modelo gerado a partir dos ACs mostrou-se promissor na geraÃÃo de estimativas futuras de desmatamento e um bom indicador quantitativo e qualitativo para suporte no processo de tomada de decisÃo que pondere o desmatamento futuro a ser causado pela construÃÃo e/ou pavimentaÃÃo de uma rodovia na AmazÃnia.

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