A geomorphological mapping of the Restinga de Jurubatiba National Park, in the State of Rio de Janeiro, was proposed in this project, to assist in environmental planning, using geotechnologies and geographic information systems. The delimitation of preservation areas such as the Restinga de Jurubatiba National Park aims to maintain the environmental balance of these environments, a necessary measure due to the expansion of urban areas that suppress natural areas. The paper presented a temporal analysis of land use and coverage in the buffer area, with description of the areas susceptible to the occurrence of natural processes and / or weakened by anthropic action, due to the physical characteristics of the area.