MUSLE.K: Estimate soil erodibility factor K.

Description Usage Arguments Details Value Author(s) References See Also Examples

Description

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

Usage

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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).

Details

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

Value

Returns the soil erodibility factor K.

Author(s)

Sarah Goslee

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

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# 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)

sgoslee/VFS documentation built on May 16, 2019, 11:13 p.m.