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La connaissance des parametres dendrometriques d’une espece est necessaire pour sa conservation durable. Elle permet d’evaluer les ressources disponibles et de lutter contre sa destruction. Cette etude analyse les parametres dendrometriques de Lophira lanceolata de la foret classee de Toui-Kilibo et ses environs au Benin. Les donnees dendrometriques sont collectees a l’interieur de 64 placettes carrees de 30 metres de cote. L’analyse des donnees prend en compte la contribution en surface terriere de Lophira lanceolata, la densite relative, la dominance relative, la frequence, l’amplitude d’habitat, le diametre moyen par les types de formations vegetales. Le diametre moyen de Lophira lanceolata (25,5 cm), la hauteur moyenne (15,21 cm) et la surface terriere moyenne (0,63 m2/ha) de la foret claire et savane boisee sont superieurs aux autres types de formations vegetales. Ce constat est fait egalement sur la frequence, la densite relative, la dominance relative. La contribution en surface terriere de Lophira lanceolata est de 9,363% en foret claire et savane boisee, 7,398% en savane arboree et arbustive et 2,65% en champs et jacheres. En foret claire et savane boisee, lorsque le diametre de Lophira lanceolata s’accroit d’un centimetre, sa surface terriere augmente de 0,043 m2/ha. L’etude permet de connaitre les ressources disponibles sur Lophira lanceolata et de prendre les decisions sur son amenagement.Mots cles : Lophira lanceolata, parametres dendrometriques, foret, savane, Benin. English Title: Dendrometric study of Lophira lanceolata of the Toui-Kilibo classified forest and its surroundings in Benin Knowledge of the dendrometric parameters of a species is necessary for its sustainable conservation. It makes it possible to assess the resources available and to combat its destruction. This study analyses the dendrometric parameters of Lophira lanceolata of the classified forest of Toui-Kilibo and its surroundings in Benin. Dendrometric data is collected inside 64 square plots 30 meters wide. Data analysis concerns the contribution in basal area of Lophira lanceolata, the relative density, the relative dominance, the frequency, the range of habitat, the average diameter by the types of plant formations. The average diameter of Lophira lanceolata (25.5 cm), the average height (15.21 cm) and the average basal area (0.63 m2/ha) of the open forest and wooded savannah are superior to other types of plant formations. This observation is also made on the frequency, the relative density, the relative dominance. The contribution in basal area of Lophira lanceolata is 9.363% in open forest and wooded savannah, 7.398% in tree and shrubby savannah and 2.65% in fields and fallows. In open forest and wooded savannah, when the diameter of Lophira lanceolata increases by one centimeter its basal area increases by 0.043 m2/ha. The study makes it possible to know the resources available on Lophira lanceolata and to take decisions on its development.Keywords: Lophira lanceolata, dendrometric parameters, forest, savanna, Benin.

Etude dendrométrique de Lophira lanceolata de la forêt classée de Toui-Kilibo et ses environs au Bénin