Trimmed and untrimmed Biomass
The average wood and leaf aliquot moisture contents were 0.61% and 0.53%.Mean trimmed fresh leaf biomass, mean trimmed fresh wood biomass, mean trimmed dry leaf biomass, mean trimmed wood dry biomass and the overall mean trimmed dry biomass were 6.02kg, 7.23kg, 3.19kg,4.41kg and 7.60kg respectively. The dry biomass of small untrimmed branches, twigs and leaves was calculated from the linear regression model developed between the biomass of trimmed branches, twigs, leaves and the basal diameter of trimmed branches (equation 1) and accordingly the mean basal diameter was 7.25cm and the mean untrimmed biomass for small branches was 9.01kg.
B = 547.5 BD + 15382, r2= 0.92 ………………………… (Equation 1)
The mean wood density was 0.45 gcm-3while the mean untrimmed biomass for large branches calculated from the volume of each section of a branch obtained by Smalian’s formula of a tree was 105.78kg. The mean biomass of trunks was 1543±312kg while the mean DBH, Height and the mean overall aboveground biomass (AGB) were 69.29±7.97cm, 22.87±0.9m and 1785.12±344kg respectively.
The person’s correlation analysis between above-ground biomass and with biomass predictor variables (DBH, Height and wood density) showed that the above-ground biomass was strongly correlated with DBH while Height is the second important factor correlating with biomass showing moderate correlation. However, the AGB was not significantly correlated with wood density (Table 2).
Table 2. Pearson’s product moment correlations coefficient and P value between the response variable (AGB) and explanatory variables(WD, DBH and H)