Estimate water retention curve parameters based on Wosten 1999

Source: R/waterretention.R

This function estimates water retention curve parameters using Pedo transfer function of Wosten (1999) based on HYPRES

pFpara_ptf_Wosten1999(Pklei, Psilt, Psom, Bovengrond)

Arguments

Pklei

(numeric) The clay content of the soil (%) within soil mineral part. Pklei > 0

Psilt

(numeric) The silt content of the soil (%) within soil mineral part. Psilt > 0

Psom

(numeric) The organic matter content of the soil (%). Psom > 0

Bovengrond

(boolean) whether topsoil (1) or not (0)

Value

a table with the following columns:

Dichtheid (numeric) soil bulk density (g/cm3) ThetaR (numeric) residual water content (cm3/cm3) ThetaS (numeric) saturated water content (cm3/cm3) alfa (numeric) related to the inverse of the air entry suction, alfa > 0 (1/cm) n (numeric) a measure of the pore-size distribution, n>1, dimensionless ksat (numeric) saturated hydraulic conductivity (cm/d)

References

Wösten, J.H.M , Lilly, A., Nemes, A., Le Bas, C. (1999) Development and use of a database of hydraulic properties of European soils. Geoderma 90 (3-4): 169-185.

Examples

pFpara_ptf_Wosten1999(Pklei = 25, Psilt = 15, Psom = 4.5, Bovengrond = 1)
#>    Dichtheid ThetaR    ThetaS       alfa        n     ksat
#>        <num>  <num>     <num>      <num>    <num>    <num>
#> 1:  1.124447   0.01 0.5098983 0.05413231 1.169909 11.58728
pFpara_ptf_Wosten1999(Pklei = 45, Psilt = 3, Psom = 4.5, Bovengrond = 1)
#>    Dichtheid ThetaR    ThetaS       alfa        n     ksat
#>        <num>  <num>     <num>      <num>    <num>    <num>
#> 1:  1.124447   0.01 0.5043651 0.04231467 1.177021 17.64617