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L'etude de la dynamique des populations est essentielle pour le developpement de scenarios de gestion rationnelle des ecosystemes forestiers. Cette etude realisee sur des parcelles experimentales forestieres permanentes (PFTP) a Bensekou visait a evaluer la dynamique de la population de la foret classee de Sota, sous la menace de la pression anthropique, par l'analyse du developpement des peuplements sur PFTP au Nord-Est du Benin. Ce travail a permis d'obtenir un inventaire floristique (identification des especes, mesure de DBH) sur ce PFTP en lisiere de foret. Le traitement To (sans traitement) et T2 T1 (simple Coppice) ont ete appliques. De plus, des donnees historiques sur l'evolution de PFTP depuis 1996 ont ete considerees. Un total de 09 especes regroupees en 05 familles ont ete identifiees. Les Fabaceae forment le fonds floristique. La formation est une savane arbustive, dominee par Detarium microcarpum , Terminalia avicennioides , Vitellaria paradoxa , Combretum racemosum et en minorite par Prosopis africana , Vitex doniana et Pterocarpus erinaceus . Les especes a croissance relativement rapide sont Detarium microcarpum , Vitellaria paradoxa , Lannea microcarpa , Pterocarpus erinaceus et Terminalia avicennioides . Dans les sous-traitements T1 et T2 regroupes dans les parcelles T3, une augmentation de la densite moyenne d'environ 772 pieds / ha entre 1996 et 2014 a ete constatee, ce qui s'explique par la forte capacite de regeneration. La parcelle sous traitement A a egalement une augmentation de 428 pieds / ha dans la meme periode. En ce qui concerne la surface terriere, on constate une augmentation d'environ 20 m 2 / ha entre 1996 et 2001, pour tomber brutalement a 2,68 m 2 / ha de 2001 a 2014. Les parcelles traitees ont donc une dynamique evolutive plus rapide; mais la pression anthropique exercee par la population riveraine ne permet pas aux arbres d'avoir un grand diametre avant d'etre abattus. Il est alors important de mettre en oeuvre une sensibilisation de la population locale sur les merites de la gestion rationnelle de cette formation vegetale sur leur vie et sur l'environnement. © 2017 International Formulae Group. All rights reserved. Mots cles: Dynamique des populations, parcelles permanentes d'essais forestiers (PFTP), regeneration naturelle, foret classee de Sota, Nord-est du Benin English Title: Dynamics stands of Woodland Testing Plots (WTP) of the Sota Forest in North-East Benin English Abstract Population dynamics study is an essential for the development of rational management scenarios of forest ecosystems. This, This study carried out on permanent Forestry trials plots (PFTP) at Bensekou aimed at  assessing the population dynamics of the Sota classified forest, under the threat of anthropogenic pressure, by the analysis of stand development on PFTP in the North East of Benin. This work achieved a floristic inventory (species identification, DBH measuring) on this PFTP on the edge of the forest. The To treatment (without treatment) and T2 T1 (single Coppice) were applied. Moreover, historical data about the evolution of PFTP since 1996 were considered. A total of 09 species grouped into 05 families were identified. The fabaceae form the floristic fund. The formation is a shrub savanna, dominated by Detarium microcarpum , T erminalia avicennioides , Vitellaria paradoxa , Combretum racemosum and in minority by Prosopis africana and Vitex doniana , Pterocarpus erinaceus . The relatively fast-growing species are Detarium microcarpum , Vitellaria paradoxa , Lannea microcarpa, Pterocarpus erinaceus , and Terminalia avicennioides . In under treatments T1 and T2 grouped in plots T3, an increase of the average density for approximately 772 feets/ha between 1996 and 2014 was noted, which is explained by the strong capacity for regeneration. The plot under To treatment also have an increasing of 428 feet / ha in the same period. Regarding the basal area, we notice an increase of about 20 m 2 /ha between 1996 and 2001, then abruptly drops to 2.68 m 2 /ha from 2001 to 2014. Therefore, the plots which have been treated had a faster evolutionary dynamics; but anthropogenic pressure exerted by the riparian population does not allow trees to have a large diameter before being cut down. It is then important to implement awareness raising of the local population on the merits of rational management of this plant formation on their lives and on the environment. © 2017 International Formulae Group. All rights reserved. Keywords: Population dynamics, permanent Forestry trials plots (PFTP), natural regeneration, classified forest of Sota, North East of Benin

Dynamique des peuplements des Parcelles d’Essais Sylvicoles (PES) de la forêt classée de la Sota au Nord-Est du Bénin