أشكال التعرية المائية و آثارها على الدينامية البيئية : حالات من المغرب الشمالي الشرقي

الملخص EN

Northeastern Morocco in general, and Oued El Abed and Tlagh watershed in particular, are known for several manifestations of land degradation as a result of water erosion.

They vary in terms of the mechanisms of their formation due to the multiplicity and overlap of natural and human factors, and their various forms, such as sheet erosion, concentrated runoff and gullying.

Through this paper, the manifestations of erosion and their spatial distribution in the two basins were inventoried in order to try to understand and elicit what this distribution of these forms reflects, in terms of their impact on the environmental dynamics due to the deterioration of these lands, and then determine the area and proportion of each aspect separately.

For this purpose, high-resolution satellite images, and frequent visits to the field to check and confirm, were relied upon, in order to be able to draw various forms of erosion distributed in the studied field.