Carbon is continuously being removed from the atmosphere by photosynthesis and stored in carbon pools (live, dead, and soil carbon) of forest ecosystems. However, carbon stock in dead wood and of trees with diameters at breast height (dbh) between 5 and 10 cm is often not considered in many studies carried out in the Congo Basin Forest. The relationship between tree diversity, life-forms and carbon stocks has received little attention. This study was carried out on the outskirts of Deng Deng National Park (DDNP) to determine tree diversity (dominant families, species richness and Shannon index), assess carbon stocks in the five carbon compartments (living tree, understory, fine roots, dead wood and litter) as well as to analyze the relationship between (1) carbon stocks and tree diversity; and, (2) between carbon stock and life-forms. The Shannon index of trees ≥ 10 cm dbh ranged from 2.6 in riparian forest to 4.3 in secondary forest; and for the tree between 5 and 10 cm, it ranged to 1.56 in riparian forest to 3.68 in the secondary forest. The study site housed 16 species, 7 genera and 3 families which are only found in trees of dbh between 5 and 10 cm. The average total carbon stock of the five compartments varied from 200.1 t ha⁻¹ in forest residues to 439.1 t ha⁻¹ in secondary forest. Dead wood carbon stock varied from 1.2 t ha⁻¹ in riparian forests to 12.51t ha⁻¹ in agroforests. The above ground carbon stocks for trees with diameter between 5 and 10 cm varied from 0.7 t ha⁻¹ in young fallow fields to 5.02 t ha⁻¹ in old secondary forests. This study reveals a low but positive correlation between species richness and total carbon stocks, as well as a significant positive relationship between life-forms and total carbon stocks. The findings highlight the need for more data concerning carbon content of dead wood, carbon of trees ≥ 5 cm < 10 cm dbh and the relationship between carbon stocks and tree diversity from other areas of the Congo Basin for a good understanding of the contribution of tropical forests to climate change mitigation.

碳通过光合作用不断从大气中清除，并储存在森林生态系统的碳库中（活的，死的和土壤的碳）。但是，在刚果盆地森林进行的许多研究中，通常不考虑枯木和直径在胸高（dbh）在5至10厘米之间的树木中的碳储量。树木多样性，生命形式和碳储量之间的关系很少受到关注。这项研究是在邓登国家公园（DDNP）郊区进行的，以确定树木的多样性（主要科，物种丰富度和香农指数），评估五个碳区（活树，林下，细根，枯木）中的碳储量和凋落物）以及分析（1）碳储量与树木多样性之间的关系；（2）在碳储量和生命形式之间。≥10 cm dbh的树木的香农指数介于河岸林的2.6和次生林的4.3之间。对于5到10厘米之间的树木，河岸林的范围为1.56，次生林的范围为3.68。该研究地点有16种，7个属和3个科，它们仅在5至10厘米之间的dbh树中发现。五个舱室的平均总碳储量为200.1吨公顷森林残渣中的^-1至次生林中的439.1 t ha ^-1。死木碳储量从河岸森林的1.2 t ha ^-1到农林的12.51t ha ^-1不等。直径在5到10厘米之间的树木的地上碳储量从年轻休耕田的0.7 t ha ^-1变化到5.02 t ha ^-1在古老的次生森林中。这项研究揭示了物种丰富度与总碳储量之间的低正相关性，以及生命形式与总碳储量之间的显着正相关。研究结果强调，需要更多有关死木碳含量，≥5 cm <10 cm dbh的树木的碳以及来自刚果盆地其他地区的碳储量与树木多样性之间的关系的数据，以便更好地了解热带地区的贡献。森林以缓解气候变化。