Evolution spatiale de l’espèce hopea odorata roxb. (dipterocarpaceae), un arbre exotique envahissant, dans le parc national du banco (abidjan, Côte d’Ivoire)

The land-use dynamics of Hopea odorata, an invasive species, are being monitored in Banco National Park. The aim was to examine the spatial evolution of the species from 2000 to 2021. To this end, vegetation cover was mapped and analysed using Landsat satellite images from the years ETM + 2000 and 2010 and OLI 2021 acquired on the USGS platform. The rate of change of the area occupied by Hopea odorata was also assessed. The study showed that the area occupied by Hopea odorata increased by 56.44% from 2000 to 2010, i.e. from 20.29 ha to 31.74 ha, and by 36.07%, i.e. from 31.74 ha to 45.27 ha during the period from 2010 to 2021. Thus, from 2000 to 2021, the area occupied by Hopea odorata rose from 20.29 ha to 45.27 ha, representing a 123.12% increase in the Park's surface area. In view of the upward trend of this species, management measures need to be considered in order to protect and conserve the Park's biodiversity in the long term, and to prevent the invasion of this forest massif.