ISUNGU WOSSAR Isabelle*, LUMANDE KASALI Joseph, MASENS DA-MUSA Bonaventure, LUBALEGA KIMBAMBA Tolérant, ETUMANGELE ASEKE Emile, GASIGWA SABIMANA Richard

Patron of natural regeneration under the cover of five seed trees in the Luki biosphere reserve

Five species of trees were monitored among the great plant diversity that abounds in the Luki Biosphere Reserve. This choice is justified by the need to use forest species with commercial value and those that fix nitrogen in the different silvicultural, apisylvicultural and agroforestry combinations for reforestation in the form of forest plantations. The five forest species chosen are: Prioria basalmifera (Vermoesen) Breteler; Piptadeniastrum africanum Hook.j; Lovoa trichiloides Harms; Pteleopsis hylodendron Mildbr; and Terminalia superba Engl. &Diels. The overall objective of this study is to evaluate the dynamics of the natural regeneration of the five forest species in the semi-deciduous forest formation of LUKI. For each species, three seed stems were selected from the mixed primary forest of the Reserve. 5 species x 3 trees/species x five circular inventory plots were established in progression at a distance of 5, 10, 15, 20 and 25 m in radius. 75 plots were inventoried between November 2016 and November 2019. It appears from the observations that these forest species have significant natural regeneration potential which could be valued in the improvements of natural forest stands by enrichment. The analysis of variance on the different dendrometric measurements carried out in the inventory plots revealed a significant effect. The test of the smallest significant difference made it possible to compare the means of dendrometric measurements using the R software. Simple linear regression made it possible to highlight the response of the density/ha according to the distribution of the seedlings under the seedman. Télécharger l'article