rosettaSoilClass: Average values for soil texture classes based on the ROSETTA...
In paleolimbot/soilptf: Implements ROSETTA pedotransfer functions in R

Description Usage Format Source References

These values are average values for theta_r, theta_s, log_alpha, log_n, ln_Ks, ln_K0, L (including uncertainty) by soil textural class. The following variables are covered:

theta_r: Residual water content (cm3/cm3)
theta_s: Saturated water content (cm3/cm3)
log_alpha: The (log10 of the) alpha parameter in the Mualem (1976) model (log 1/cm)
log_n: The (log10 of the) n parameter in the Mualem (1976) model (log unitless)
ln_Ks: The (natural log of the) saturated conductivity (ln cm/day)
ln_K0: The (natural log of the) K0 conductivity (ln cm/day)
L: The L parameter in the van Genuchten (1980) model for unsaturated hydraulic conductivity (unitless)

1	rosettaSoilClass

A data frame with 84 rows and 5 variables.

TextureClass: The name of the texture class (one of Cl, ClLo, Lo, LoSa, Sa, SaCl, SaClLo, SaLo, Si, SiCl, SiClLo, or SiLo; see texture.class)
N: the number of observations on which the parameters are based
variable: the variable of interest (one of theta_r, theta_s, log_alpha, log_n, ln_Ks, ln_K0, L)
value: The value of the parameter.
stdev: The uncertainty associated with the value measurement (one standard deviation)

https://www.cals.arizona.edu/research/rosetta/

Schaap, M. G., Leij, F. J., & van Genuchten, M. T. (2001). ROSETTA: a computer program for estimating soil hydraulic parameters with hierarchical pedotransfer functions. Journal of Hydrology, 251(3), 163–176. https://dx.doi.org/10.1016/S0022-1694(01)00466-8

paleolimbot/soilptf documentation built on May 24, 2019, 6:14 p.m.