نوع مقاله : پژوهشی
نویسندگان
1 گروه مهندسی آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری
2 عضو هیأت علمی دانشگاه تربیت مدرس
3 دانشیار گروه آبخیزداری، دانشکده منابع طبیعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری
4 گروه مهندسی آبخیزداری، دانشکده منابع طبیعی دانشگاه تربیت مدرس، نور، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Introduction and Goal
The implementation of watershed management practices in the country and the evaluation the conducted activities and effects investigation of these projects are essential on the governing processes at watershed. However, such an important approach has to be adequately considered.
Materials and Methods
Accordingly, the present study was planned with the simulation aim of the impact of watershed management practices on hydrological parameters using SWAT model in the Kan Watershed in Tehran Province, Iran. Therefore, the initial performance of model was assessed. It was then calibrated and validated.
Results and Discussion
The results showed the acceptable efficiency of model for the hydrological simulation of the watershed. So, the coefficient of determination of 0.69 and 0.86 was reported in the calibration and validation stages, respectively. Also, the Nash-Sutcliffe index for the calibration and validation was 0.85 and 0.93, respectively. Then, simulation of watershed management practices was carried at the watershed and the results showed that the implementation of watershed management measures of gabion check dams, masonry check dams, counter trench, and loose- stone check dams caused the runoff reduction with the values of 25, 23, 21, and 11 percent, respectively. Further, the water available was improved at tune of 19.0, 21.3, 20.5 and 10.75 percent, respectively, compared to the non-implementation of watershed practices. Also, the amount of lateral flow had the largest change with the practice of masonry check dams, while, there was non-significant change between the operation type in the change of lateral flow. In addition, the evapotranspiration increased with implementation of gabion check dams, masonry check dams, counter trench, and loose- stone check dams at rates of 20.19, 20.86, 19.0 and 10.87 percent, respectively.
Conclusion and Suggestions
It is implied from the results of the current study that the implementation of watershed management practices can decrease the possibility of flood occurrence in the Kan Watershed.
Conclusion and Suggestions
It is implied from the results of the current study that the implementation of watershed management practices can decrease the possibility of flood occurrence in the Kan Watershed.Conclusion and Suggestions
It is implied from the results of the current study that the implementation of watershed management practices can decrease the possibility of flood occurrence in the Kan Watershed.
کلیدواژه‌ها [English]
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