alpha.E3D | R Documentation |
calculates alpha-parameter according to Vereecken et. al 1989 (doi:10.1097/00010694-198912000-00001) for Van-Genuchten soil-water retention curve (Van-Genuchten 1980 - doi:10.2136/sssaj1980.03615995004400050002x) -> first equation in Table 7 for log(alpha)
alpha.E3D(Sa, Cl, Bulk, Corg)
Sa |
Gravimetric content of sand particles in fine soil (0-100) |
Cl |
Gravimetric content of clay particles in fine soil (0-100) |
Bulk |
bulk density of dry soil [kg/m^3] |
Corg |
Gravimetric content of organic bound carbon in fine soil (0-100) |
alpha
alpha.E3D(30,20,1300,1.3)
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