Erosion stage
Prediction equation
Critical slope/˚
Splash erosion
y = − 2.851 + 1.327 x − 0.139 x 2 + 0.004 x 3
11.58
Sheet erosion
y = 2.481 − 0.468 x + 0.034 x 2 − 0.001 x 3
11.33
Interrill erosion
y = − 0.460 + 0.331 x − 0.036 x 2 + 0.001 x 3
12.00