The Evaluation of AHP Model Results in The Zoning of Landslide Risk (Case Study: Ahar River Basin)

Landslide zoning is one of the methods that can help determine the critical regions and using zoning maps the planners can apply them. Landslide zoning has been used less logically in planning goals and minimizing landslide damages. Therefore, we have applied AHP model as one of the useful and applicable methods in a case study of Ahar drainage basin in East Azerbayijan for landslide zoning. In this method we have distinguished factors affecting landslides as components, followed by weighting each and determent the role of any factor in land sliding.Results obtained from the present research indicated that geologic parameters had the highest and human inducted factors played the least significant roles. Factors such as litho logy, gradient, faults, slope aspects, height, distance from the river, land use type, and distance from roads were the most effective elements in landslide zoning. The landslide risk map was then prepared in three different groups of high, medium, and low.