A. Rainwater Use Efficency

    Using rainfall more efficiently could be an effective way to mitigate the effects of and land degradation its self. Degraded land causes rainwater infiltration and holding capacity to decreases, which leads to more runoff and soil evaporation (Stroosnijder, 2003). Rainwater loss to run off accounts for 20 to 40 percent of total yearly rainfall in the Sahel making this the largest contributor to lack of moisture in the Sahel (Kandji et all, 25). In light of this it makes sense to make the best use possible of available rainwater especially in times when there is less rain than usual. This is especially true considering that because of soil management techniques the water use efficiencies of different regions with similar climates vary greatly. In writing about Green Water Use Efficiency (GWUE) Leo Stroosnijder of Wageningen University explains that dry lands in sub- Saharan Africa have water use efficiencies from 5% to 15%. He further points out that water use in East Africa is 20% compare to the United States, which has a similar climate, where efficiency is 50% because of soil management techniques (2003). This suggests that much could be gain in relation to slowing land degradation and improving soil productivity by more efficiently using rainwater.

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