The purpose of this study was to improve knowledge on the evaluation of the ecological value of a plant formation. This process includes several stages including the definition of the evaluation objective, the inventory of the environment or data collection, the choice of criteria, the rating of the criteria, the calculation of the weighting by criterion and the total weighting and finally, the evaluation of the ecological value of the site. he practical case of the Mamadou Sangaré estate shows that denser and richer forest formations record a higher ecological value compared to savannah formations.

The present study aims to improve knowledge of the resilience of post-cultivation vegetation in the Ivorian sub-Sudanese sector by discriminating the stages of post-cultivation reconstitution and characterising these stages using the structural attributes and functional traits of the species. To this end, 4 groups corresponding to the different stages of reconstitution were identified. These stages are divided into three groups according to their characteristics. Stage_1 is characterised by SudanoZambézian (SZ) and introduced (i) species, generally hemicryptophyte-pyrophytic and chamaephytes that spread by anemochory and barochory. Stage_2 is characterised by Guinean-Congolian and Sudano-Zambézian transition species and Sudano-Zambézian species. They are therophytes and nanophanerophytes, anemochores with small leaves (nanophyll, leptophyll and microphyll). Stages 3 and 4 share the same characteristics. They are characterised by GC species, which are generally large (mesophanerophytes and megaphanerophytes) as well as geophytes, which have large leaves (megaphyll) and spread by zoochory (epizoochory and endozoochory). In short, post-cultivation reconstitution takes place in four stages. These stages are divided into four groups according to their characteristics. Depending on the maturity gradient, these stages are marked by a transition from savannah species, herbaceous species with small leaves and anemochorous spread, to forest species, large species with large leaves and zoochorous spread.