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Lesson Outline Erosion- Introduction Erosion- Think about it... What is Erosion? Impacts of Erosion on Soil, Air, and Water Quality Case Study on a Local Level Case Study on a National Level Case Study on a World Level Impacts of Erosion on Air Quality How Water and Wind Erosion Occur Factors Contributing to Water and Wind Erosion of Soil Factors Continued...Climate Factors Continued...Soil Properties Factors Continued...Soil Cover Factors Continued...Topography Factors Continued...Land Management Factors Continued...Soil Surface Roughness Types of Water and Wind Erosion Water Erosion Wind Erosion Summary Lesson Media Objects Phases of Particle Movement Phases of Particle Movement2 Processes of Wind Erosion Soil Erosion Introduction Soil Types and Erosion Tillage Affects on Erosion Hill Shapes Wind Erosion - Saltation Saltation

Erosion Rate Me 1 2 3 4 5 Summary Erosion is the wearing away of the land surface by agents that abrade, detach, remove, and deposit the material elsewhere. Erosion has especially been accelerated by human or anthropogenic activities. Erosion impacts soil, water, and air quality. Some farming practices reduce water quality as topsoil, rich in nutrients, is detached, transported and deposits into water bodies. Urbanization is another contributor to erosion as the construction and movement of material creates conditions for soil erosion. Erosion is commonly broken down into wind and water erosion though energy is the main factor in both. Climate, soil properties, and land management (along with others) influence water and water erosion. Factors Influencing Erosion Water Erosion Wind Erosion climate climate soil properties: aggregation /soil moisture soil properties soil cover soil cover land management land management topography soil surface roughness   unsheltered distance   wind velocity and turbulence The three processes in water and wind erosion are detachment, transport, and deposition. Types of water erosion include splash, sheet, rill, and gully. Types of wind erosion include suspension, saltation, and creep. Comments Be the first to write a comment... Add Comment

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This project was supported in part by the National Research Initiative Competitive Grants CAP project 2011-68002-30029 from the USDA National Institute of Food and Agriculture, adminstered by the University of California-Davis and by the National Science Foundation (NSF), Division of Undergraduate Education, National SMETE Digital Library Program, Award #0938034, administered by the University of Nebraska. Any opinions, findings, conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the USDA or NSF.
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