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Soil Pedotransfer Function (PTF) to estimate Soil Water Content (WC -v/v (%))

soil_water_content.Rd

This functions calculates the Saturated Hydraulic Conductivity (SSKS) based on various soil pedotransfer functions (PTFs) using soil properties as input parameters.

Usage

WCWP_Saxton(S, C, SOM)

WCFC_Saxton(S, C, SOM)

WCST_Saxton(SBDM)

WCST_Tomasella(S, C, SBDM, GWCFC)

WCFC_Tomasella(SBDM, GWCFC)

WCWP_Tomasella(C, SBDM, GWCFC)

WCST_Minasny(S, SBDM)

WCFC_Minasny(S, SBDM)

WCWP_Minasny(C, SOM)

Arguments

S

Sand content (%) of the soil.

C

Clay content (%) of the soil.

SOM

Soil Organic Matter content (%) of the soil. Default is 1.5.

SBDM

Soil Bulk Density (g/cm3) of the soil. Default is 1.5.

GWCFC

Gravimetric Water Content at Field Capacity (%)

SPOR

Total Soil porosity (%)

Value

Returns a list or a numeric value of SSKS (mm/h) based on the 'output' parameter. If 'output' is 'data', it returns the complete dataset. If 'output' is 'summary', it returns the summary statistics of SSKS values. If 'output' is any of the other specified types, it returns the corresponding statistic.

References

  • Saxton, K. E., & Rawls, W. J. (2006). Soil Water Characteristic Estimates by Texture and Organic Matter for Hydrologic Solutions. Soil Science Society of America Journal, 70(5), 1569–1578. https://doi.org/10.2136/sssaj2005.0117

  • Minasny, B., & Hartemink, A. E. (2011). Predicting soil properties in the tropics. Earth-Science Reviews, 106(1-2), 52-62. https://doi.org/10.1016/j.earscirev.2011.01.005

  • Tomasella, J., & Hodnett, M. (2004). Pedotransfer functions for tropical soils. Developments in Soil Science, 30, 415-429. https://doi.org/10.1016/S0166-2481(04)30021-8

  • Pachepsky, Y., & Rawls, W. J. (Eds.). (2004). Development of pedotransfer functions in soil hydrology (Vol. 30). Elsevier. https://www.elsevier.com/books/development-of-pedotransfer-functions-in-soil-hydrology/pachepsky/978-0-444-51705-0

  • Ghanbarian, B., Taslimitehrani, V., & Pachepsky, Y. A. (2017). Accuracy of sample dimension-dependent pedotransfer functions in estimation of soil saturated hydraulic conductivity. Catena, 149, 374-380. https://doi.org/10.1016/j.catena.2016.10.015

  • Ferrer Julià, M., T.E. Monreal, A.S. del Corral Jiménez, and E. García Meléndez. 2004. Constructing a saturated hydraulic conductivity map of Spain using pedotransfer functions and spatial prediction. Geoderma 123:257–277. doi:10.1016/j.geoderma.2004.02.011

  • Suleiman, A. A., & Ritchie, J. T. (2001). Estimating saturated hydraulic conductivity from soil porosity. Transactions of the ASAE, 44(2), 235. https://doi.org/10.13031/2013.4683

Examples

# Function Arguments
S <- 28
C <- 15.7
SOM <- 2
SBDM <- 1.5
GWCFC <- 25

WCFC_Saxton(S, C, SOM)
#> [1] 28.28278

WCST_Tomasella(S, C, SBDM, GWCFC)
#> [1] 43.11959

WCWP_Minasny(C, SOM)
#> [1] 14.014