Climate Change Adaptation and Mitigation Options through strengthening carbon Management in Central Africa: Biomass allometric models of Khaya senegalensis (Desr.) A. Juss (meliaceae) in Cameroon

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Abstract This study focused on the development of allometric models of Khaya senegalensis in order to establish a basis for calculating carbon stocks. The research was carried out in the Adamawa, North and Far North region of Cameroon. The weighing of the samples of each part (stem, branch, leaf) of the sample of trees composed of 60 feet of Khaya senegalensis and their drying in the oven made it possible to know the dry biomass of each subject Adjusted coefficients of determination (Adj.R2), residual standard error (RSE) and Akaike's information criterion (AIC) were used to choose the best models. Thus, the tested models presented varied performances. The various analyzes have confirmed that the diameter at breast height (DBH) is the variable that offers the best correlation with above-ground (AGB) and below-ground (BGB) biomass. The best selected models are: ln (AGB) = 1.004–0.054 * ln (D) and ln (BGB) = -3.009 + 0.016 * ln (D) (Adamawa); ln (AGB) = 0.004 + 0.054 * ln (D) and ln (BGB) = -1.301 + 0.116 * ln (D) (North); ln (AGB) = 0.004 + 1.084 * ln (D) and ln (BGB) = -0.002 + 0.016 * ln (D)( Far North). The best models selected for the global equations for the three regions are: ln (AGB) = 0.504 + 3.048*ln (D) and ln (BGB) =-0.109 + 0.306*ln (D). Models were proposed to estimate the carbon of Khaya senegalensis in Cameroon.

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