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Information Journal Paper

Title

Derivation and Validation of Parametric Pedotransfer Functions of Soil Water Infiltration in Different Regions

Pages

  769-779

Abstract

 Soil water Infiltration plays an important role in the water cycle of nature. However, since the direct measurement of soil water infiltration is laborious, time-consuming and expensive. Therefore, in this study was conducted to investigate the possibility of estimating the coefficients of water Infiltration equations such as Kastiakov, Kastiakov-Lewis, Horton and USA Soil Conservation Service (SCS) using readily available soil properties and to evaluate the validity of these functions outside of their derivation regions. Therefore, soil physical properties and Cumulative infiltration were measured in two different regions (T1 and T2). Parametric functions were derived using T1 location measurements and validation was performed using independent T2 measurements. Cumulative infiltration was measured using Double rings with three replications at 78 points. Parametric functions were created using Multiple linear regression. The highest accuracy of parametric functions in the derivation stage was related to SCS equations with the coefficient of explanation (R2) equal to 0. 66 and the lowest accuracy with the value of R2 equal to 0. 04 was related to the power of Horton equation. In the validation stage, the accuracy of the functions showed a large decrease. R2 changes range from 0. 00 to 0. 26, normalized root mean square error (nRMSE) range from 1. 76 to 80. 93 and geometric mean error ratio (GMER) range from 0. 94 to 1. 73 Was obtained. Therefore, in this study, the use of parametric functions to estimate the coefficients of Infiltration equations outside of their derivation regions was not efficient.

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    • Cite

    APA: Copy

    Barideh, r., BESHARAT, S., & KHODAVERDILOO, H.. (2021). Derivation and Validation of Parametric Pedotransfer Functions of Soil Water Infiltration in Different Regions. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 15(4 ), 769-779. SID. https://sid.ir/paper/1054373/en

    Vancouver: Copy

    Barideh r., BESHARAT S., KHODAVERDILOO H.. Derivation and Validation of Parametric Pedotransfer Functions of Soil Water Infiltration in Different Regions. IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2021;15(4 ):769-779. Available from: https://sid.ir/paper/1054373/en

    IEEE: Copy

    r. Barideh, S. BESHARAT, and H. KHODAVERDILOO, “Derivation and Validation of Parametric Pedotransfer Functions of Soil Water Infiltration in Different Regions,” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 15, no. 4 , pp. 769–779, 2021, [Online]. Available: https://sid.ir/paper/1054373/en

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