Evaluation of Tree Size Diversity, And Soil Characteristics on Above Ground Biomass in Heterogeneous Tropical Savanna Woodland in Osara

One of the key components of productivity of tropical ecosystem is Above Ground Biomass. This factor was evaluated in Heterogenous Savanna woodland of Osara-ngada, Adavi Local Government Area Kogi State, and Using Diameter at Breast height, alongside with other environmental stressors such as soil nutrient capacity, Vegetation diversity Index, Annual Average rainfall over the area. The result showed that the family Combretaceae and Fabaceae produced 0.8381kgm-2ha-1 and 0.5363kgm-2ha-1 respectively, while other such as Rubiaceae, Lamiaceae, Ebenaceae, Annonaceae, Moraceae, Meliaceae, Verbenaceae, Mimmosoidae and Anarcadiaceae produced minimal above ground biomass, the herbage yield was averagely low about 107.83gm-2ha-1 though different experimental plots revealed different level of stability, species asynchrony was essentially similar, the DBH classes shows an inverted J-shape for the first plot while the second and third plot sampled revealed that 10-20, 20-30 DBH class is majorly represented, this categories reflects the critical stages of plant development and thus, The study underscores the need for targeted conservation and management strategies to sustain productivity and ecosystem stability in the area.