پهنه بندي خطر زمين لغزش و ناپايداري دامنه اي به روش هاي APH و احتمال مطالعه موردي: حوضه آبريز رودخانه كنگ، دامنه هاي شمالي بينالود

Landslide Hazard and Slope Instabilities zoning with AHP and Probability Methods in Binaloud Zone (Case Study: Kang River Watershed, Nortb Binaloud Slopes)

Landslides and other kinds of mass movements are one of the important environmental hazards that threaten human habitats and other building factors in mountain fields. Mechanism of landslide happening takes influence of anthropogenic factors in addition to external and internal activities of earth. This factor has important role in instigation of north Binaloud Mountain along with environmental variables such as geology formation, topography and slope. The feature changes the shape of Binaloud Mountains. We have tried in this article to produce and measure landslide and other slope instability hazard zoning in Kang watershed as one of the complex mountain basins using analytic hierarchy process (AHP) and probability models. Results of this research have been summarized as landslide susceptible zone map applicable for regional and local planners. Finally, results indicate that AHP method has more adaptation with field examination and landslide reviews with GPS, compared with probability method. The variables of geology formation, landuse, topography, slope and drainage density, have weights among of effective variables on landslides. Generally 21.9% of watershed has located in very high dangerous landslide zone and 31.3% in dangerous landslide zone. This subject threatens tourism in west of Mashhad and is dangerous for human habitats in this area.