hydpar_hypres_tab: Mualem - van Genuchten Parameters from W?sten et al. 1999,...

Description Usage Arguments Value References

View source: R/ptf_hypres_tab.R

Description

Derives the MVG Parameters ThetaR, ThetaS, Alpha, n, Tort and Ksat from soil texture classes and bulk density values

Usage

1
hydpar_hypres_tab(tex.hypres, topsoil)

Arguments

tex.hypres

A character vector with soil texture values according to classes applied in W?sten et al. 2009

topsoil

logical Is the sample from the topsoil?

Value

A data.frame with the number of rows equal to length(tex.hypres) The data.frame contains the following variables:

ths

Saturation water content fraction

thr

Residual water content fraction

alpha

Alpha parameter of van Genuchten water retention function, m-1

npar

N parameter of van Genuchten water retention function

mpar

M parameter of van Genuchten water retention function

ksat

Saturated hyraulic conductivity parameter of Mualem hydraulic conductivity function, mm d-1

tort

Tortuosity parameter of Mualem hydraulic conductivity function

References

W?sten JHM, Lilly A, Nemes A, Le Bas C (1999) Development and use of a database of hydraulic properties of European soils. Geoderma 90, pp. 169-185


pschmidtwalter/brook90r documentation built on Nov. 20, 2018, 4:33 a.m.