Table 1. The biophysical features of the study sites.



Site name	District	Mean annual precipitation (mm) (1988–2009)	Soils	Vegetation

Goodhope	Southern	475	Noncalcareous loam	Acacia giraffae tree savanna
Matlolakgang	Kweneng	434	Noncalcareous sand	Central Kalahari bush savanna
Xanagas	Gantsi	368	Calcareous	Northern Kalahari tree and bush savanna