Régénération des espèces ligneuses en forêt du Parc national d'Odzala (Congo-Brazzaville)

Abstract

This study is deeling with the regeneration of woody species in three types of Marantaceae forest in the Odzala national Park: the dense evergreen forest, the scattered Marantaceae forest and the Marantaceae bush. The basic data were collected from two different groups of plots:—three plots of 0.5 ha each for the inventory of trees of dbh (diameter at breast height) ≥ 5 cm; three plots of 5 ha each for those of dbh ≥ 30 cm. Analysis of specific structure for 13 species has pointed out good regeneration in dense forests and poor regeneration in Marantaceae bush. This is in accordance with the regeneration deficit density which varies from dense forest to Marantaceae bush. The inhibitor impact of high density of Marantaceae on species regeneration is pointed out and confirmed to be in question as for as the regeneration jamming within the scattered Marantaceae forest is concerned. We have noted a diminution of the plantules species density of the dense forest to Marantaceae bush and an increase of the Marantaceae density in the two forest types respectively.