Species Size Distribution and Site Status Assessment of Gmelina Arborea Plantation

Abstract

The research work on size distribution of tree species in Gmelina arborea plantation was conducted to assess the volume of primary tree species, Gmelina and other secondary species identified in the plot and to relate the present site status with the afore stated objectives of the plantation. It was carried out in the Gmelina arborea plantation of Federal College of Forestry, Ibadan, Nigeria. Total enumeration method was employed to achieve the set objectives. Total number of 108 trees was assessed among which 90 were Gmelina arborea, 5 Tectona grandis, 6 Delonix regia, 2 Mangifera indica while others in Table 4.0 had one appease. Parameters assessed were Diameter at Breast Height (DBH)(cm) and Total Height (TH)(m) through which Basal Area(m²) and Volume(m³) were deduced. DBH was measured at 1.3m above the ground level using diameter tape while Total Height was measured with the use of Haga altimeter and measuring tape.