Etude dendrométrique d'Acacia auriculiformis A. Cunn. ex Benth. en mélange sur vertisol au Bénin

N.H. Fonton, R. Glele Kakai, J. Rondeux

Résumé


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.

Mots-clés


acacia auriculiformis; mixed forests; vertisols; forest mensuration; forest inventories; stand characteristics; volume tables; benin; acacia; africa; africa south of sahara; forest management; forest mensuration; forests; genetic soil types; leguminosae; mimosoideae; soil types; vegetation; west africa

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ISSN : 1370-6233 / eISSN : 1780-4507 Google scholar Most cited papers

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