soil_params.Rd
Estimate soil parameters from texture class or sand/silt/clay
soil_params(soil_type = NULL, sand = NULL, silt = NULL, clay = NULL, bulk = NULL)
soil_type | USDA Soil Class. See Details |
---|---|
sand | percent sand |
silt | percent silt |
clay | percent clay |
bulk | soil bulk density (optional, kg m-3) |
list of soil hydraulic and thermal parameters
* Specify _either_ soil_type or sand/silt/clay. soil_type will be ignored if sand/silt/clay is provided * If only 2 out of sand/silt/clay are provided, it will be assumed they sum to 100 * Valid soil class options: "Sand","Loamy sand","Sandy loam","Silt loam","Loam", "Sandy clay loam","Silty clay loam","Clayey loam", "Sandy clay","Silty clay","Clay","Peat","Bedrock", "Silt","Heavy clay","Clayey sand","Clayey silt" * Based on ED2/R-utils/soilutils.r * Hydraulics based on Cosby et al 1984, using table 4 and equation 1 (which is incorrect it should be saturated moisture potential over moisture potential)
# NOT RUN { sand <- c(0.3, 0.4, 0.5) clay <- c(0.3, 0.3, 0.3) soil_params(sand=sand,clay=clay) # }