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Studies of the causes of soil erosion on marl soils in northern Algeria: The role of traditional soil tillage

✍ Scribed by D. Prinz; D. Gomer; S. Belz

Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
687 KB
Volume
5
Category
Article
ISSN
1085-3278

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✦ Synopsis

In semiarid regions such as the Maghreb, the pressure on natural resources such as water and soil are increasing. Reservoir sedimentation and soil degradation are basic problems in these areas. The Oued Mina watershed (5000 km2) has been chosen by the Algerian Ministry of Agriculture and the Deutsche Gesellschaft fur Technische Zusammenarbeit (GTZ) GmbH for a Technical Cooperation Project to quantify soil erosion and to assess various methods of soil and water conservation at the watershed level. The study area (about 1000km2) is essentially a landscape of ancient dissected plateaux, with badlands as a major feature in some places. Both the agricultural areas and the reservoir, located at the basin outlet, are strongly affected by soil degradation. The climate is semiarid Mediterranean (wet winters), with an average annual rainfall of 300-350 mm. Investigations using a large rainfall simulator revealed that soil tillage on mark under semiarid conditions could be an excellent tool to diminish runoff and soil erosion.

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