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Water Resources Strategies to Increase Food Production in the Semi-Arid Tropics - UNESCO-IHE PhD Thesis (Paperback)
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Water Resources Strategies to Increase Food Production in the Semi-Arid Tropics - UNESCO-IHE PhD Thesis (Paperback)
Series: IHE Delft PhD Thesis Series
Expected to ship within 12 - 17 working days
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Water demand in southern Africa continues to rise, as urban areas
expand and as agricultural water demand rises to meet the
millennium development food security goals. Water resource
availability in the northern Limpopo Basin has declined over the
last 30 years, and will decline further under climate change. In
this study, water resources modelling is used to quantify the
effect of water resources strategies and climatic conditions on
water resources availability. This is coupled with water balance
modelling to evaluate the potential of alluvial aquifers, which
form the beds of sand rivers. The greatest benefit for the least
impact comes from strategies providing for better land and
soil/water management, such as changing from maize to small grains,
production of livestock fodder and conservation agriculture. Small
dams are a key resource to rural communities, and change to
Multiple Use Systems through abstraction of water for irrigation
has clear benefits locally. There is also great potential for the
exploitation of alluvial aquifers for water supply. Better
management of existing large dams, together with conjunctive use of
alluvial groundwater and several reservoirs could increase
productive use of water and significantly improve livelihoods
without the construction of new reservoirs.
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