soil_convert: Create the hydraulic parameters of soil from soil property...

In Sibada/sibadaR: Sibada's accumulated R scripts for next probably use to avoid reinventing the wheel.

Description

Create the hydraulic parameters of soil from soil property parameters for VIC model.

Usage

soil_convert(soil_props, nlayer = 3)

Arguments

soil_props	A dataframe containing the soil hydraulic parameters, including volume fraction of gravity (fraction, not percentage), weight fraction of sand, silt and clay, reference bulk density, and weight fraction of organic matter, total 6 property parameters. The first 6 columns are parameters of the first soil layer, and the next 6 columns are of the second soil layer, and so on.
nlayer	Num of layers of each gridcell.

Details

This function is using the Saxton's formulars. If the soil property parametersis HWSD, The property parameters are corresponding to T_GRAVEL (fraction), T_SAND (fraction), T_SILT (fraction), T_CLAY (fraction), T_REF_BULK_DENSITY (g/cm3), and T_OC (fraction).

Value

A dataframe containing the soil hydraulic parameters for each layer of each gridcell. Including EXPT (Exponent), Ksat (Saturated hydrologic conductivity, mm/d), BUBLE (Bubbling pressure, cm), BULKDN (Bulk density), WcrFT (Fractional soil moisture content at the critical point) and WpFT (Fractional soil moisture content at the wilting point).

References

Saxton, K. E, Rawls, W. J. Soil Water Characteristic Estimates by Texture and Organic Matter for Hydrologic Solutions[J]. Soil Science Society of America Journal, 2006, 70(5):1569-1578.

Sibada/sibadaR documentation built on Jan. 31, 2020, 6:40 p.m.