DEVIATION OF PEDO-TRANSFER FUNCTIONS TO ESTIMATE SATURATED HYDRAULIC CONDUCTIVITY

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NAVABIAN M.; LIAGHAT A.M.; HOMAEI M.

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Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2003 | Volume:4 | Issue:16 Page(s): 1-12

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Title

DEVIATION OF PEDO-TRANSFER FUNCTIONS TO ESTIMATE SATURATED HYDRAULIC CONDUCTIVITY

Author(s)

NAVABIAN M. | LIAGHAT A.M. | HOMAEI M. | Issue Writer Certificate

Keywords

PEDO-TRANSFER FUNCTIONSQ4

SATURATED HYDRAULIC CONDUCTIVITYQ3

SOLI HYDRAULIC CONDUCTIVITY.Q3

Abstract

Determination of SATURATED HYDRAULIC CONDUCTIVITY Ks is needed for many studies in water movement and solute transport in the soil. Although some advances are made for direct measurements of ks, they are usually time consuming and costly. Some attempts have been made to indirectly predict the SATURATED HYDRAULIC CONDUCTIVITY from the easily/readily obtainable parameters. The so-called PEDO-TRANSFER FUNCTIONS (PTF) proved to be a valuable tool to predict the Ks from the available soil data. The objective of this study was to derive some PTFs for different soil textures, requiring minimum input parameters. Consequently, 45 soil samples were taken and their Ks were directly measured, using the Geulph permeameter. The multilinear regression method was used to develop the PEDO-TRANSFER FUNCTIONS. The measurements were consisted of bulk density, particle density, field capacity, effective porosity (θe), particle size distributions, effective particle diameters, geometric mean diameter (dg) and geometric standard deviation of soil particles (δg). The normality and multi-colinearity of the parameters were tested by Minitab package. Three PTF functions were then derived, using different input parameters. The results indicated that accuracy of the derived PTFs can well predict (R2=0.73) the Ks from θe, dg and δg.

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References

DERIVATION OF PEDO TRANSFER FUNCTIONS FOR PARAMETRIC ESTIMATION OF RETENTION CURVE

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APA: Copy

NAVABIAN, M., LIAGHAT, A.M., & HOMAEI, M.. (2003). DEVIATION OF PEDO-TRANSFER FUNCTIONS TO ESTIMATE SATURATED HYDRAULIC CONDUCTIVITY. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 4(16), 1-12. SID. https://sid.ir/paper/27991/en

Vancouver: Copy

NAVABIAN M., LIAGHAT A.M., HOMAEI M.. DEVIATION OF PEDO-TRANSFER FUNCTIONS TO ESTIMATE SATURATED HYDRAULIC CONDUCTIVITY. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2003;4(16):1-12. Available from: https://sid.ir/paper/27991/en

IEEE: Copy

M. NAVABIAN, A.M. LIAGHAT, and M. HOMAEI, “DEVIATION OF PEDO-TRANSFER FUNCTIONS TO ESTIMATE SATURATED HYDRAULIC CONDUCTIVITY,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 4, no. 16, pp. 1–12, 2003, [Online]. Available: https://sid.ir/paper/27991/en

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