Land-use history, not readily available
for most places, remains the weakest link in nearly all
studies of historic vegetation change, in Africa as well
as other places in the world. Notwithstanding,
communities hold a great wealth of knowledge on the

In the semi-desert zone of North Horr, northern Kenya, soil salinity reaches toxic levels, with extensive salt crusts at the surface. Environmental groups are involved in tree and shrub planting trials with the objective of stabilizing sand dunes and rehabilitating land.