Fjölrit RALA - 05.12.1999, Blaðsíða 83

Tamirie Hawando
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Table 5. Area coverage of various soii moisture regime classes in Ethiopia, potentials and con-
straints for development an environment rehabiiitation.
Soil moisture regime Annual rainfall & avail- able water holding Land area in km2, household in 1000 km2 Population Major constraints leading
classes capacity Total Cultivated million Major uses to land degradation
Udic 1000-2800 (AWC=300-392) 361 64 29.5 Perennial & Poor farming system,
Ustic 700-1000 (AWC=196-342) 220 103 20.1 annual crops, forestry Annual crops deforestation, over- grazing, population pressure Poor farming system,
Xeric 300-700 (AWC=50-196) 367 11 4.5 dominate, per- ennial crops, grazing, forestry Rangelands, deforestation, over- grazing, population pressure, water & wind erosion, drought, salinity Deforestation, over-
Aridic <300 (AWC<50) 270 2 2.5 annual crops, irrigated farms Rangelands, grazing, erosion, drought, low rainfall, salinity Moisture deficit,
Total 1000-2800 (AWC=300-392) 1218 180 56.6 farms, sporadic annual crops wind erosion, drought, overgraz- ing, erratic and low rainfall, salinity