The universal soil loss equation
The USLE, proposed by Wischmeier and Smith (1978), is applied in several
studies worldwide. The input required data reflect the five factors;
rainfall erosivity, soil erodibility, topography, crop management and
conservation practice. It is described as follow:
A=R*K*LS*C*P (1)
Where:
A: is the average annual soil loss (tons
ha-1year-1),
R: is the rainfall erosivity (MJmm ha-1h year),
K: is the soil erodibility factor (tons ha-1R unit-1),
LS: is the topographic factor (adimensional ),
C: is the cropping management factors (adimensional), and
P: is the practice support factor (adimensional)