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Investigation of Effective Factors on Landslides Occurrence and Landslide Hazard Zonation – Case Study Shirin Rood Drainage Basin, Sari, Iran
Conclusions
Whatever was derived from different effective factors analysis, among nine factors, the aspect and distance from hydrographic network factors, were removed from the research for the reason of weak results. In the past researches about aspect, the north aspect was determined as high hazard region for purpose of mass movement occurrence, but in the study area this factor influenced with human activities such as land use changing and road construction, has been losed its effect so as the southern aspect has the most effect on landslides occurrence in the study area.
Also about land use factor was found that the land use changing has most effect in landslide triggering so as in the areas with dense forest, gradually, with deforestation and changed into dry and irrigated farming and gardens, have been occurrenced many landslides.
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