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Assessing soil erosion and conservation with various methodologies at different scales. MOROCCAN DESIRE TEAM. Symposium Assessing benefits of SLM-Key for success. Rabat 2009. Sehoul is located between Oued Bouregreg and Grou.
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Assessing soil erosion and conservation with various methodologies at different scales
MOROCCAN DESIRE TEAM
Assessing benefits of SLM-Key for success
is part of the natural geographic unit "Plateau Central Marocain".
Marginal land with a high rate of poverty and important indicators of degradation
Land degradation, characterized by high variability and chronic shortage in term of natural resources.
Assisted regeneration of cork oak
Rainfed tree plantation: olive associated with annual cultivation
Fodder cultivation: e.g. the lupine
Crop rotation Cereal / leguminous
1- Increased soil protection by providing better cover
Cereal / leguminous rotation vegetation cover reached 65,5%
Cereal / Cereal rotation vegetation cover is < 50 %
2- Maintaining and improving soil fertility
Crop rotation (cereal/leguminous): Improves soil resistance to compaction and limits surface crusting.
1- Protecting the soil surface (vegetation cover)
In the olive grove (15 years), we recorded the most important herbaceous cover (66%). However, the average cover of herbaceous in the rotation Cereal / Cereal does not exceed 52,5%.
2- Improvement of soil fertility and surface characteristics
Lupin: offers the best vegetation cover
Offers a medium organic matter content in the soil.
leguminous/ wheat rotation
Less erosion for
wheat /leguminous crop rotation
Soil loss and runoff coefficient under different land use
Water balance in 2008-2009
Runoff coefficient : 10%
Crop rotation Cereal / Leguminous seems to be a good strategy to use in Sehoul
But there is need for providing fodder
Study of vegetation cover, soil fertility, soil texture and moisture.
Use of 137Cs measurements
Soil loss and runoff coefficient
Enable to understand the soil behaviour at the catchment scale and to evaluate the global soil loss
Study of Water balance