Global Journal of Science Frontier Research, H: Environment & Earth Science, Volume 23 Issue 1

Figure 2: Map of the Study Area c) Plant Species Identification, Grouping, and Biodiversity Indices Plant species composition, abundance, and the number of families were established for each plot in line with their countenance. A marker was employed to label each enumerated woody plant to prevent double enumeration. The biodiversity indices were found for each sampled point and were used for the comparison of species diversity among the physiognomies. The subsequent biodiversity indices were found for the location • Species Relative Density (RD) number of individuals per hectare was found by applyingthe formula in line with Ogunrinola et al. (2020): = � 1 � × 100 ………………… (1) Where RD = relative density, ni = the number of individuals of species i, and N = the total number of individuals in the whole population. • Species Diversity Index was extrapolated by applying the Shannon-Weiner diversity index (Ogunrinola et al., 2020): ∑ ln( =1 ) ……………………… . (2) Where: H’ = Shannon-Weiner diversity index S = Total number of species in the community Pi = Rate of S constituted of the ith species ln = Common logarithm • Species Evenness in each community was carried out by applying Shannon’s equitability (EH): Tree Species Diversity Status and Contributors to Forest Degradation in Shasha Forest Reserve, Nigeria © 2023 Global Journals 1 Year 2023 38 Global Journal of Science Frontier Research Volume XXIII Issue ersion I VI ( H )