Diversity Gradient and Composition of Woody Plants Species along Kogi East, Kogi State, Nigeria

Abstract

 This research investigated the outcomes of deforestation on plant diversity in the eastern region of Kogi State. The study specifically focused on the assessment of implication of the destruction and interference of forest characteristics, density and plant biodiversity via anthropogenic activities. The study relied essentially on the floristic study of the sampled area which involves physical enumeration of woody plant species within the sampled communities. The data obtained were subjected to analysis using Simpson’s Diversity Index and Shannon-Weiner Index in order to ascertain species diversity. Chi-square analysis (X2) of the vegetation indexes showed no significant difference at P≤0.95. It was found that, Ankpa dominated the other axis in terms of density 2135, but Idah recorded highest Simpson and Shannon’s Diversity Index of 0.84(0.82-0.86) and 2.26(2.15-2.36) respectively. The biophysical study also revealed that the vegetation in this area has suffered significant damage/changes in terms of its composition, density and characteristics. It was found that the continuous adverse anthropogenic interference on the forest landscape has contributed significantly to loss of forest resources, degradation of flora and fauna and loss of nutrient availability of the soil. This has disrupted the overall ecosystem functions in the study area. The study therefore, recommends a forest management approach that is sustainable in the study area in order to address the ugly trend in Kogi East.