The present study relates to the evaluation of the impact of the typology of afforestation on the dynamics of the richness and the diversity of the flora. It was carried out in the classified forest of Bouaflé in semi-deciduous forests zone at the western center of Côte d'Ivoire. The main objective of this study was to evaluate the effects of the type of afforestation on the quantitative and qualitative evolution of the flora of this zone. With this intention, floristic inventories of the spontaneous flora under afforested spaces were carried out starting from the method of the itinerant statements and that of the surface statements. The data analysis showed that the plurispecific afforestations support the diversification and the conservation of the spontaneous flora that guarantees safeguard of vegetable diversity. Thus, the got results show that it would be of a great ecological interest to privilege the plurispecific afforestations, in particular associations of the type: Terminalia superba-Terminalia ivorensis and Terminalia suprba-Terminalia ivorensis-Gmelia arborea.