Os impactes das mudanças globais nos recursos florestais na aŕea de montanha do Rif Central em Marrocos: da exploração extensiva às perspetivas de planeamento Referência: xxx (2019). The global change impacts on forest natural resources in Central Rif Mountains in northern Morocco: extensive exploration and planning perspective. Revista de Geografia e Ordenamento do Território (GOT), n.º 17 (junho). Centro de Estudos de Geografia e Ordenamento do Território, p. 75-92, dx.

This study aimed to assess landslide susceptibility in the Sahla watershed in northern Morocco. Landslides hazard is the most frequent phenomenon in this part of the state due to its mountainous precarious environment. The abundance of rainfall makes this area suffer mass movements led to a notable adverse impact on the nearby settlements and infrastructures. There were 93 identified landslide scars. Landslide inventories were collected from Google Earth image interpretations. They were prepared out of landslide events in the past, and future landslide occurrence was predicted by correlating landslide predisposing factors. In this paper, landslide inventories are divided into two groups, one for landslide training and the other for validation. The Landslide Susceptibility Map (LSM) is prepared by Logistic Regression (LR) Statistical Method. Lithology, stream density, land use, slope curvature, elevation, topographic wetness index, slope aspect, and slope angle were used as conditioning factors. The Area Under the Curve (AUC) of the Receiver Operating Characteristic (ROC) was employed to examine the performance of the model. In the analysis, the LR model results in 96% accuracy in the AUC. The LSM consists of the predicted landslide area. Hence it can be used to reduce the potential hazard linked with the landslides in the Sahla watershed area in Rif Mountains in northern Morocco.

No abstract

In the Rif region in northern Morocco, the degradation of the environment exposes the soil to aggressive erosion agents, especially in the Mediterranean climate in which the evacuation of 2000 tons of soil per km2 per year is a basic average. In these difficult environments is necessary to manage the resource effectively by anticipation the situations of dry and wet years. Several development programs have been carried out in the Rif zone since 1960s and the problem persists, especially with the arrival of the new agriculture of Cannabis (Drug) in 1995 in the southern part of the study area which is characterized by its precarious environmental balance. This paper aims to examine the aspects of soil degradation and analyse the failure factors of the management programs and projects have been conducted by several national and international stakeholders including EU and UN.

No abstract