Vegetation and Mangrove Remnants

The project consisted of research applied to the planning and execution of mapping of mangrove vegetation areas on the coast of Rio de Janeiro, with the support of digital Geoprocessing technologies.

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In summary, sensory images and orthorectified aerial photographs were used as a basis for identifying geographic features and extracting information about mangrove environments in the coastal zone of the State of Rio de Janeiro. Geographic Information Systems (GIS) and Digital Image Processing Systems (PDI) were widely and fully used to support the proposed mapping.

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The mapping and analysis scales were 1/50,000 based on medium resolution images (LANDSAT and CBERS) and 1/5,000 with high resolution images (aerial photographs, IKONOS, QuickBird and WorldView) and hyperspectral. The maps and charts produced will be indicative of the mangrove vegetation scenarios and also what conditions they are in, today and in the recent past, due to physical and environmental constraints.

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Vector bases from IBGE and the CIDE Foundation were used in the digital mapping process, both in the georeferencing of images and also in the validation of the final maps, which partially depended on vector geographic features already mapped by these government institutions, when compared with those extracted from the images.