VFS (version 1.0.2)

MUSLE.K: Estimate soil erodibility factor K.

Description

Estimates MUSLE soil erodibility from a multiple regression model of soil texture.

Usage

MUSLE.K(fc, fm, ff)

Arguments

fc

Fraction of coarse material (sand) in the soil (0-1).

fm

Fraction of medium material (silt) in the soil (0-1).

ff

Fraction of fine material (clay) in the soil (0-1).

Value

Returns the soil erodibility factor K.

Details

If K is not available from other sources, it can be estimated from soil texture (Goslee, in review).

References

Wischmeier, W. H. and Smith, D. D. (1978) Predicting rainfall erosion losses-a guide to conservation planning. U.S. Department of Agriculture, Agriculture Handbook No. 537.

See Also

MUSLE

Examples

# NOT RUN {
# Approximate erodibility factor from soil texture.
Kf <- MUSLE.K(.3, .5, .2)

# Calculate landscape factor from field size and shape.
# 100-m field length with 2% slope
# note that MUSLE.LS takes feet
LS <- MUSLE.LS(100 * 3.28, .02)

# assume 0.4 ha cornfield with known rainfall intensity
peakd <- peak(intensity = 55, area = 0.4)

SedYield <- MUSLE(85, qp = peakd, A = .4, K = Kf, LS = LS)

# }