نوع مقاله : پژوهشی
نویسندگان
1 استادیار گروه آبخیزداری، دانشکده کشاورزی و منابع طبیعی واحد اراک، دانشگاه آزاد اسالمی، اراک، ایران
2 عضو هیأت علمی سازمان تحقیقات آموزش و ترویج کشاورزی و پژوهشکده حفاظت خاک و آبخیزداری
3 عضو هیأت علمی سازمان تحقیقات اموزش وترویج کشاورزی
4 عضو هیأت علمی پژوهشکده حفاظت خاک و آبخیزداری
5 مرکز تحقیقات کشاورزی و منابع طبیعی استان مرکزی
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Application of Neuro-fuzzy and tree regression models is not too old in hydrology of river sediments and also in watersheds and in this regard, sediment rating curves have been identified as the most common method for estimating sediment. In this study for comparison and correction of estimation methods of river sediment load, estimated rates of several uni-variate types of sediment rating curves and a multivariate type of sediment rating curves were investigated with Neuro-fuzzy and tree regression models in five selective hydro-metric station of different climatic zones of Iran and with various indexes of the accuracy and the precision. The results show that the mean of the accuracy index of Neuro-fuzzy and tree regression models in selective stations are 151 and 536 percent respectively which shows low efficiency compared with sediment rating curves. The results of the application of multivariate sediment rating curve in various station shows that the rate of the accuracy index of multivariate sediment rating curve in the best case is belong to Glinak station with the rate of 1.12. Also the average value of the accuracy index of multivariate sediment rating curve is 1.15 which is an acceptable amount to the other considered various methods.
کلیدواژه‌ها [English]
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