Table 3: Herbaceous vegetation diversity indices along climate-land use conditions.

Climatic zoneLand useMean richness     Evenness ()

SahelCommunal area14.34 ± 4.718.23 ± 3.151.27 ± 0.230.77 ± 0.09
Protected area19.50 ± 4.7410.05 ± 3.121.20 ± 0.060.77 ± 0.05

North SudanianCommunal area21.67 ± 7.9013.31 ± 5.431.15 ± 0.080.83 ± 0.06
Protected area15.86 ± 5.9010.58 ± 4.141.19 ± 0.120.84 ± 0.06

South SudanianCommunal area25.58 ± 6.3418.00 ± 4.601.09 ± 0.040.89 ± 0.03
Protected area19.51 ± 6.3514.63 ± 4.961.11 ± 0.040.90 ± 0.03

Superscript letters indicate significant differences according to Student's -test. The numbers with the same letters indicate that there is no significant difference.