ptf.cW {spsh} | R Documentation |
Title Corrected Weynants et al. (2009) Pedotransfer Function
ptf.cW(CLAY, SAND, BD, OC)
CLAY |
A vector of |
SAND |
A vector of |
BD |
A vector of |
OC |
A vector of |
Pedotransfer function returns the van Genuchten - Mualem model parameters given CLAY
, SAND
, BD
, and OC
.
The correction of the original paper presented by (Weynants et al. 2009), were made by (Weihermüller et al. 2017), which is implemented.
The PTF is not suitable for predicting the hydraulic conductivity curve at pressured heads > -6 cm (Weynants et al. 2009).
Melanie Weynants, mweynants@gmail.com
Tobias KD Weber , tobias.weber@uni-hohenheim.de
Weynants M, Vereecken H, Javaux M (2009). “Revisiting Vereecken Pedotransfer Functions: Introducing a Closed-Form Hydraulic Model.” Vadose Zone Journal, 8(1), 86. ISSN 1539-1663, doi: 10.2136/vzj2008.0062. Weihermüller L, Herbst M, Javaux M, Weynants M (2017). “Erratum to “Revisiting Vereecken Pedotransfer Functions: Introducing a Closed-Form Hydraulic Model”.” Vadose Zone Journal, 16(1), 0. ISSN 1539-1663, doi: 10.2136/vzj2008.0062er.
result <- ptf.cW(CLAY = .4, SAND = .4, BD = 1.6, OC = .5)