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Erosion Control

Erosion controlReinforcedflexterraslope.jpg is the practice of preventing or controlling wind or water erosion in agriculture, land development and construction. This sometimes involves the creation of a physical barrier, such as vegetation or rock, to absorb some of the energy of the wind or water that is causing the erosion. Effective erosion controls are important techniques in preventing water pollution and soil loss. Erosion control may arise in natural areas, agricultural settings or urban environments, the latter of which is often characterized as stormwater runoff driven. On construction sites they are often implemented in conjunction with sediment controls such as sediment basins, silt fences and straw wattle (fiber roll).

Examples of some erosion control methods include:

  1. Aerially Delivered Re-forestation and Erosion Control System
  2. buffer strip
  3. cellular confinement systems
  4. crop rotation
  5. conservation tillage
  6. contour bunding
  7. contour plowing
  8. cover crops
  9. ditch liners
  10. fiber rolls
  11. gabions
  12. hydroseeding
  13. level spreaders
  14. mulching
  15. perennial crops
  16. polyacrylamide
  17. reforestation
  18. riparian strip
  19. riprap
  20. strip farming
  21. Sand fence
  22. vegetated waterway
  23. terracing
  24. wattle (construction)
  25. windbreaks

Mathematical modeling

Since the 1920s and 1930s scientists have been creating mathematical models for understanding the mechanisms of soil erosion and resulting sediment surface runoff, including an early paper by Albert Einstein applying Baer's law. These models have addressed both gully and sheet erosion. Earliest models were a simple set of linked equations which could be employed by manual calculation. By the 1970s the models had expanded to complex computer models addressing nonpoint source pollution with thousands of lines of computer code. The more complex models were able to address nuances in micrometerology, soil particle size distributions and micro-terrain variation.



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