Estimates MUSLE landscape factor for a homogeneous field from the field length and slope.
Field length (ft).
Field slope (ft/ft).
MUSLE landscape factor LS.
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.
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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)
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