Table 7: Tree density (ha-1), RF (%), RA (%), RD (%) and IVI (%) of woody species of old age exclosure.

Species names Family TD RF RA RD IVI
Acacia senegal (L.) Willd. Fabaceae 181.3 17.78 32.4 49.18 99.36
Acacia nilotica (L.) Willd. Ex Del. Fabaceae 78.13 13.33 13.97 29.21 56.51
Acacia brevispica Harms. Fabaceae 106.3 13.33 18.99 4.09 36.42
Acacia tortilis (Forssk.) Hayne Fabaceae 18.75 8.89 3.35 9.71 21.96
Acacia etbaica Schweinf. Fabaceae 21.88 8.89 3.91 6.69 19.49
Euphorbia cactus Boiss. Euphorbiaceae 53.13 8.89 9.5 0.11 18.5
Apodytes dimidiata E. Mey. Ex Am. Icacinaceae 28.13 6.67 5.03 0.05 11.74
Dichrostachys cinerea (L.) Wight & Am. Fabaceae 21.88 4.44 3.91 0.51 8.86
Delonix regia (Boj. ex Hook.) Raf. Fabaceae 15.63 4.44 2.79 0.08 7.32
Ximenia americana L. Olacaceae 15.63 2.22 2.79 0.21 5.23
Euclea divinomm Murr Ebenaceae 6.25 2.22 1.12 0.01 3.35
Ziziphus spina-ehristi (L.) Des. Rhamnaceae 3.13 2.22 0.56 0.12 2.9
Ehretia cymosa Thonn. Boraginaceae 3.13 2.22 0.56 0.01 2.79
Grewia bicolor Juss. Tiliaceae 3.13 2.22 0.56 0.01 2.79
Grewia villosa Willd. Tiliaceae 3.13 2.22 0.56 0 2.79
- - - 100 100 100 300

TD = Tree density, RF = Relative frequency, RA = Relative abundant, RD = Relative dominance and IVI = Importance Value Index.