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Soil erosion rates depend on slope, rainfall, vegetation cover, and soil properties. Excessive erosion reduces productivity and causes sedimentation.
Công thức
R = rainfall erosivity, K = soil erodibility, L/S = slope factors, C = cover, P = practice factors
- R
- rainfall erosivity — rainfall erosivity
- K
- soil erodibility — soil erodibility
- L
- slope factors — slope factors
- S
- slope factors — slope factors
- C
- cover — cover
- P
- practice factors — practice factors
Hướng dẫn từng bước
- 1Universal Soil Loss Equation (USLE): A = R × K × L × S × C × P
- 2R = rainfall erosivity, K = soil erodibility, L/S = slope factors, C = cover, P = practice factors
- 3Units: tonnes/hectare/year; 0.5-10 typical; >5 considered excessive
Ví dụ có lời giải
đầu vào
Bare slope, R=100, K=0.5, LS=2, C=1, P=1
Kết quả
A = 100 tonnes/ha/year (severe erosion)
Vegetation urgently needed
Lỗi thường gặp cần tránh
- ✕Ignoring erosion impact until productivity loss evident
- ✕Assuming grade alone predicts erosion (vegetation crucial)
Câu hỏi thường gặp
How does vegetation prevent erosion?
Roots bind soil, canopy reduces raindrop impact, litter protects surface. 90%+ cover reduces erosion dramatically.
Is soil erosion always bad?
Slight erosion natural, but excessive causes loss of fertile topsoil, sedimentation, and productivity decline.
Sẵn sàng để tính toán? Dùng thử Máy tính Soil Erosion miễn phí
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