Comparaison de la structure floristique de la lisière et l’intérieur de la foret dans la réserve de Masako (Province Orientale R.D. Congo)

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Our work was designed to compare the structure between the edge and forest interior in the Masako

Forest Reserve. The total inventory of individuals DHP at 1.30 m greater than or equal to 10 em, was made on an area of two hectares of the total of these two habitats. In total, we surveyed 751 individuals belonging to 106 species and 33 families of all these habitats. After analysis, the results show that: The density of these two formations is respectively 378 and 373. The number of species recorded was 79 in the edge and 80 in the forest. The number of families, respectively 30 and 29. This proves that the edge and interior forest have the same number of species and families. Species with high relative dominance over other for these two species communities are in the strip, there a Ricinodendron heudelotii (12,22%), Uapaca guineensis (9,63%), Petersianthus macrocarpus (9,25%), er Musanga cecropioides (7,19%). In the forest, we had found some species such as Petersianthus macrocarpus (15%), Uapaca guineensis (12,65%) et Ricinodendron heudelotii (11,44%). The most diverse families of these two habitats are: Euphorbiaceae and Fabaceae.The average diameter of all individuals from the edge (24.48 ern) is less than that of individuals of the forest (26.69 ern). This shows that the edge moves towards the forest during the reconstruction of the rainforest. Basal area of the edge (23.42 sq m / ha) is lower than the interior forest (30.39 m / ha). This result confirms the trend towards the edge of old secondary forest.The average height of these two species communities barrels are respectively: 8.32 m and 10.63 m the edge in the interior forest. This shows that in .the strip. The height of the drums is inferior to that of the inner forest.The correlations between parameters are very low because the correlation coefficient (R 2), its value tends to zero. The majority of individuals of both species communities carry lianas and epiphytes. So the forest edge habitat should be protected by adopting the management plan because it has its own characteristics different species in the interior forest.