اولویت بندی اقدامات آبخیزداری در حوزه آبخیز با استفاده از روش TOPSIS(مطالعه موردی: زیدشت- طالقان)

Today, as the focus of watershed planning and management for sustainable development in many of the issues. Ecological watersheds can be evaluated and ranked them according to various ecological criteria for the watershed, one of the important steps in the planning and management of watersheds. Since the cost of watershed management projects and heavy construction project budget is limited, it is necessary that measures should be based on priorities in the watershed. A multi-criteria decision making technique in this approach is suitable for solving such problems. The use of these techniques with respect to various criteria decision making, it is the best option or options to select from available options and decisions to be implemented. In this study, TOPSIS method as the most popular methods of multi-criteria decision making has been used in watershed Zydasht Taleghan. Ten indicators of soil conservation, erosion and sedimentation, species, age class, species composition, poisonous plants, forage production, grazing capacity, quantity of water, evaporation and transpiration were measured and used TOPSIS method the criteria for prioritizing actions Watershed. The TOPSIS method and the ten indices were considered and used as technique for Order- Preference in terms of similarity to ideal solution, D1, Dint1, Dint2, and D2 sub-basins in Zydasht of Taleghan were prioritized for the watershed planning, respectively.