PTF18 | R Documentation |
PTF18 is a class PTF giving Mualem-van Genuchten parameters for combinations of modified FAO texture classes and topsoil/subsoil distinction.
data(PTF18)
a data frame with 12 observations on the following 9 variables.
thr
a numeric vector giving residual water content in Mualem-van Genuchten model
ths
a numeric vector giving saturated water content in Mualem-van Genuchten model
alp
a numeric vector giving parameter alpha (cm^(-1)) in Mualem-van Genuchten model
n
a numeric vector giving parameter n in in Mualem-van Genuchten model
m
a numeric vector giving parameter m=1-1/n in Mualem-van Genuchten model
K0
a numeric vector giving parameter K0 (cm d^(-1)) in Mualem-van Genuchten model
L
a numeric vector giving parameter L in Mualem-van Genuchten model
TOPSOIL
a character vector with values either "top" or "sub"
TEXT_FAO_MOD
a character vector with values "coarse", "medium", "medium fine", "fine", "very fine", "organic"
Tóth Brigitta, Weynants Mélanie, Nemes Attila, Makó Andras, Bilas George and Tóth Gergely. 2014. New generation of hydraulic pedotransfer functions for Europe. European Journal of Soil Science. in Press.
predict.ptf
, ChoosePTF,
ptf.data
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