ABSTRACT Soil erosion is a serious ecological problem in Mediterranean areas. The IntErO model based on the erosion potential method (EPM) and the modified universal soil loss equation (MUSLE) have been used to assess soil erosion in several basins. This study aimed to assess and evaluate the effectiveness of these methods for evaluating sediment production and deposition rates in the Arbaa Ayacha basin, Morocco, in order to estimate sediment fluxes on a catchment scale. Our findings suggest that the basin is strongly exposed to erosion owing to geological formations, slope and land use, with average losses of about 28.4 t ha−1 year−1. Erosion processes were evaluated at the erosion production (Eocene marly formations) and sedimentation zones (Quaternary terraces). The results of these models may be useful to address soil and water management in this region and to assess the impact of a river dam that will be built in the basin.

中文翻译：

---

摩洛哥 Rif 流域外白垩系、第三系和第四系岩性地层沉积物动员研究

摘要 水土流失是地中海地区一个严重的生态问题。基于侵蚀潜力法 (EPM) 和修正的通用土壤流失方程 (MUSLE) 的 IntErO 模型已被用于评估多个流域的土壤侵蚀。本研究旨在评估这些方法在评估摩洛哥 Arbaa Ayacha 盆地沉积物产生和沉积速率方面的有效性，以估计流域规模的沉积物通量。我们的研究结果表明，由于地质构造、斜坡和土地利用，该盆地强烈暴露于侵蚀，平均损失约为 28.4 t ha-1 year-1。在侵蚀生产（始新世泥灰岩地层）和沉积区（第四纪阶地）评估侵蚀过程。