By Antoon de Vos (auth.)
Africa isn't referred to as one of many extra densely populated continents. but, the dangerous marks of man's actions should be obvious there dramatically. lots of Africa's ecological zones are fragile. huge scale soil erosion, resul tant cycles of drought and flash floods, downgrading of fauna and plants are famous to many usually methods, in addition to from targeted exam of some components. yet huge components of Africa stay inaccessible. only a few scholars of Africa have the ability - or the tenacity - to go back and forth over those enormous parts or into the hidden corners that lie past the well known routes of Africa. As FAO's nearby flora and fauna and nationwide Parks Officer for Africa, ANTooN DE Vos had the potential of traveling broadly and learning and reporting at the acceleration of synthetic adjustments in a lot of the continent. As an skilled practitioner of an incredible and hard technological know-how, ecology, he has made an important specialist contribution with this ebook. it's our wish that those that learn it is going to be inspired to carryon the $64000 paintings and the fear with this topic to which Dr. DE Vos has dedicated loads of his wisdom, strength and private commitments.
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Extra resources for Africa, the Devastated Continent?: Man’s impact on the ecology of Africa
Efforts have been made to improve the range, particularly by the plantation of fodder producing trees such as Acacia albida, Australian acacias, and Atriplex species. These experiments have been generally successful and should therefore be extended on a much larger scale. 50 Photo 7. Five years of subnormal rainfall has brought severe drought and tragedy to Upper Volta. Destitute nomads from Mali came to northern Upper Volta in search of pasture but found a wasteland. The carcass of a cow lies in the foreground.
To the south the Mediterranean climate merges with that of the desert climate of the Saharian zone. Within the sub-humid areas, which occur on the northern slopes of the mountain ranges, there are a multitude of variations in physical conditions which arise from differences in topography and from the influence of mountain and sea. These physical characteristics, together with soil and geological formations, have largely determined the composition and distribution of the indigenous vegetation. VEGETATION There is a great diversity in vegetation types depending on ecological conditions.
Perhaps of great potential in this area are medicinal plants, some of which are at present important forest products but which might later be developed into formal crops. Other wild species such as Citropsis are of potential use for their value as rootstock for citrus, and another important group, consisting mostly of wild species, are the oily and fatty seeds such as those of the Shea butter tree which are consumed locally in great quantities. The zone also contains some native spices such as the Melequeta and 'grains of paradise' and these along with stimulants such as kola nuts may develop into secondary crops in a diversified agriculture.