Chinese soil erosion classification and grading standards (SL190–2007):
water erosion (a) micro (< 2, < 5, < 10
t/ha/year), (b) mild (10–25
t/ha/year), (c) moderate (25–50 t/ha/year), (d) intensive (50–80
t/ha/year), (e) extremely intensive (80–150 t/ha/year), and (f) severe
(>150 t/ha/year)
Table 4 Contribution of three
factors to soil erosion and sediment yield