It was followed by Anacardiaceae (FIV = 12.5%) owing to the large stem density of its two constituent species (M. laccifera and Spondias pinnata Kurz) and Euphorbiaceae (FIV = 6.4%). Simaroubaceaewas represented by two species and had the lowest FIV (0.1%), preceded by Lamiaceae (FIV = 0.2%) and Dilleniaceae (FIV = 0.2%). We recorded 19 commercial timber species in the secondary forests out of 84 timber species housed in the natural forest
fragment (Table 2). The density of trees in the secondary forest was nearly half than those recorded in the natural forest fragment while the basal area was nearly six times higher in the natural forest fragment than in the secondary forest (Table 2). Commercial tree species accounted for 23% of stem density and 17% of the basal area of all trees recorded on fallows.