Geodiversity in the state of Rio de Janeiro:

quantitative assessment and spatial grid-based analysis for geoenvironmental mapping

Abstract

This article presents a quantitative assessment of geodiversity in the State of Rio de Janeiro through spatial analysis methods using hexagonal grids and cartographic processing at multiple resolutions. Geodiversity—understood as the variety of geological, geomorphological, pedological, and hydrological elements—plays a fundamental role in supporting biodiversity, providing ecosystem services, and sustaining both natural and cultural landscapes. Its identification and valorization are therefore essential for guiding conservation strategies and land-use management. The study identified priority areas for environmental conservation, particularly in the Northern Fluminense region, the Serrana and Northern zones of the Metropolitan Region, and the Médio Paraíba region. The Northern Fluminense stands out for its alarming lack of protected areas. The findings suggest that the adopted quantitative approach enhances the understanding of geodiversity’s spatial patterns and provides strategic input for the development of public policies aimed at land management and geoconservation in the State of Rio de Janeiro.