1 / 73

Soil Erosion and Erosion Control

Soil Erosion and Erosion Control. Overview A. One of the most destructive human events on world’s soil resources. Overview A. One of the most destructive human events on world’s soil resources. Overview A. One of the most destructive human events on world’s soil resources. Overview

tyrell
Download Presentation

Soil Erosion and Erosion Control

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Soil Erosion and Erosion Control

  2. Overview A. One of the most destructive human events on world’s soil resources

  3. Overview A. One of the most destructive human events on world’s soil resources

  4. Overview A. One of the most destructive human events on world’s soil resources

  5. Overview A. One of the most destructive human events on world’s soil resources

  6. The Dust Bowl (1931-1939)

  7. The Dust Bowl (1931-1939)

  8. Overview B. Labeled as a pollutant by EPA

  9. II. The Erosion Process A. Agents of erosion

  10. Langbein and Schumm, 1958 II. The Erosion Process B. Natural soil loss as a function of ppt.

  11. Langbein and Schumm, 1958 II. The Erosion Process B. Natural soil loss as a function of ppt.

  12. II. The Erosion Process C. Effects of Particle Size on Erosion Hjulstrom, 1939

  13. II. The Erosion Process D. Water Rainsplash

  14. II. The Erosion Process D. Water Sheet Wash

  15. A. Erosion

  16. Rill Erosion

  17. Gully Erosion

  18. II. The Erosion Process E. Wind

  19. II. The Erosion Process E. Wind

  20. II. The Erosion Process E. Wind Most common in arid and semi-arid environments

  21. III. Erosion and Land Use A. Agriculture

  22. III. Erosion and Land Use A. Agriculture

  23. III. Erosion and Land Use A. Agriculture

  24. Sediment Supply

  25. Mill Pond Dams

  26. Mill Pond Dams

  27. Mill Pond Dams

  28. Mill Pond Dams

  29. Rates of Denudation (Erosion) Long Term: ~4 cm/1000 yr Historic: 200 – 1600 cm/1000 yr

  30. Logging III. Erosion and Land Use B. Land Development

  31. Wolman, 1967 III. Erosion and Land Use B. Land Development

  32. Vice and others, 1069 III. Erosion and Land Use B. Land Development

  33. Wolman and Schick III. Erosion and Land Use B. Land Development

  34. Table 10-2 III. Erosion and Land Use B. Land Development

  35. IV. Universal Soil Loss Equation A. Overview • Hailed as one of the most significant developments in soil and water conservation in the 20th century. • Empirically-derived to estimate soil erosion by raindrop impact and surface runoff. • Culmination of decades of soil erosion experimentation conducted by university faculty and federal scientists across the United States. • In use world-wide

  36. IV. Universal Soil Loss Equation B. The Equation A = RKLSCP

  37. IV. Universal Soil Loss Equation A = RKLSCP A: Estimated soil loss (tons/acre/yr) R: Rainfall Factor: A statistic calculated from the annual summation of rainfall energy in every storm (correlates with raindrop size) times its maximum 30 - minute intensity.

More Related