Rainfall, water, sediment yields and evaporation were quantified in three catchment areas with undisturbed rain forest, selectively logged forest, and forest with shifting cultivation respectively. Despite a considerable regional variation in rainfall(1700-2300 mm/a), annual evaporation rates were similar (1209-1314 mm/a). The impact of land use practices on water yield is negligible compared to the effect of rainfall.
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Library ResourceRapports et recherchesdécembre, 1997Cameroun
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Library ResourceRapports et recherchesdécembre, 2012Afrique sub-saharienne
The demand for agricultural products (food, feed, fibre, and biomass for other purposes) produced in Sub-Saharan Africa (SSA) will increase for the coming decades. In addition, the global climate change will largely impact on the agricultural sector in Sub-Saharan Africa. Major challenges for the agricultural sector in SSA are that agricultural production systems depend on resources that are for a large part non-renewable, and that the current agricultural practices in SSA are major contributors to environmental degradation.
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Library ResourceRapports et recherchesdécembre, 2017Botswana
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Library ResourceRapports et recherchesdécembre, 2008Afrique du Sud, Afrique australe
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