Etude dendrométrique d'Acacia auriculiformis A. Cunn. ex Benth. en mélange sur vertisol au Benin
2002
Houedougbe Fonton N. | Glele-Kakai R. | Rondeux J.
Dendrometrical study of Acacia auriculiformis A. Cunn. in mixed stands on claysoils in Benin. Acacia auriculiformis is a fast growing species planted on vertisols in Benin. An inventory of 11 mixed stands of Acacia, which are 7 to 9 years old, has been realized to estimate growth parameters of the stands. The present study shows that, for the dendrometrical parameters, there is no difference between species associations at a 0.05 significance level. Nevertheless, the largest values of quadratic mean diameter of the stems foot are observed in the species associations including Leucaena leucocephala. Moreover, the branch volume decreases with the increasing of the number of stems per tree. The most appropriate volume function for Acacia auriculiformis is the one that takes into account the diameter of the stems foot and the total height. Otherwise, the species associations do not influence the profile of Acacia trees, which is constant within the associations. The predicted conversion and cutting coefficients show that the stacked wood volume represents about 144% of the real stand volume.
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