Savanna Journal of Basic and Applied Sciences 6(1):62-69
Identification of Tree Species Composition in Kano North and South Ecological Zones of Nigeria
Aliko, A.A. and Agunniyi, T.B
ABSTRACT
This study assess the tree species composition in the Kano North and South ecological zones of Nigeria, providing
up-to-date data on existing tree species in these areas. Utilizing a quadrat sampling technique, 100x100m quadrats
were established at 500m intervals along 1000m transects. A total of 112 quadrats were sampled, with tree specimens
subsequently authenticated at the Herbarium of the Plant Biology Department, Bayero University, Kano. Comparative
analysis was conducted using the Sorensen similarity index. Results indicated an estimated 51,116 trees, comprising
32 species, 26 genera, and 15 families in Kano North, while Kano South boasted 96,780 trees, representing 40 species,
33 genera, and 18 families. Azadirachta indica emerged as the dominant species in both zones, with the Fabaceae
family exhibiting the highest representation, comprising 11 members in each zone. Comparative analysis of species
composition and family representation revealed a high similarity between the two zones, with similarity index values
of 0.8 and 0.7-1, respectively. In summary, the study identified 32 and 40 tree species in Kano North and South
ecological zones, respectively, with Azadirachta indica and the Fabaceae family being the most dominant species and
family, respectively. The high similarity in species composition and family representation underscores the ecological
resemblance between the two zones. To enhance biodiversity and conservation efforts, afforestation programs should
prioritize less common species in these areas.
