The present study carried out in the different forest types of Mambasa, anthropogenic or not, aimed to highlight the impact of anthropogenic actions on the structural variability and carbon stock of its different forest successions (fallow, secondary forest and primary forest).
Data collection covered 24 plots of 0.25 ha (50 m × 50 m) planted due to 8 plots in the primary forest and 16 plots in vegetation degraded by human activities but under different phases of their reconstitution, i.e. 8 fallow plots and 8 other plots in the secondary forest. In each plot, a full inventory with botanical identification at the specific scale, measurement of diameter and total height of all trees at dbh ≥ 10 cm.
The results obtained show that in terms of density, basal area and carbon stock contained in above-ground biomass, secondary forest records the highest averages, while only the fallow averages are statistically different from other forest types. The calculated relative error highlights the gain and loss of density, basal area and carbon stock values for secondary forest and fallow respectively compared to primary forest. As for the diametric structure, the distribution of numbers by diameter classes does not differ between the forest types studied.