نوع مقاله : مقاله پژوهشی
نویسنده
دانشیارگروه مهندسی آب ، دانشکده فناوری کشاورزی ( ابوریحان)، دانشگاه تهران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسنده [English]
Infiltration in soils with different textures exhibits varying behavior. Infiltration rate parameters depend on time and location, requiring numerous field measurements used to represent average field conditions, but measuring in the field is costly and time-consuming; they are estimated by infiltration equations. For optimal water use and increased irrigation efficiency, infiltration equation parameters, which are an essential role in the design of irrigation and drainage systems, should be calibrated with high accuracy. The purpose of this research is to evaluate and compare field-measured data with estimates from equations (Kostiakov, Horton, Philip, Green and Ampt), based on the. using the double-ring method for three soil textures in three replicates. In this research, the cumulative infiltration rate measured by the double rings method for sandy loam, silty loam, and clay soil textures. Evaluation to the accuracy of the estimated values, the study utilized RMSE, MBE, and ENS. The equation with the lowest RMSE and MBE and the highest ENS was identified as the best for estimating infiltration rates for each soil texture. The results of this research, based on the evaluation indicators, determined: the Kostiakov, Green and Ampt equation, with the highest Nash-Sutcliffe indices and the lowest RMSE and MBE errors, infiltration rate with high accuracy, like the measurement data, for sandy loam, silty loam, and clay soils have estimated with the most accuracy and the least error. However, the Kostiakov for silty loam, the Horton for sandy loam, and the Philip equations for clay soils did not achieve the desired accuracy.
کلیدواژهها [English]
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