Estimate soil parameters from texture class or sand/silt/clay

Estimate soil parameters from texture class or sand/silt/clay

soil_params(soil_type = NULL, sand = NULL, silt = NULL,
  clay = NULL, bulk = NULL)

Arguments

soil_type

USDA Soil Class. See Details
sand

percent sand
silt

percent silt
clay

percent clay
bulk

soil bulk density (optional, kg m-3)

Value

list of soil hydraulic and thermal parameters

Details

* 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)

Examples

# NOT RUN {
sand <- c(0.3, 0.4, 0.5)
clay <- c(0.3, 0.3, 0.3)
soil_params(sand=sand,clay=clay)
# }