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ATI Soils

Lesson Outline

Lesson Media Objects

Faculty/Instructor

Deana Namuth-Covert
Professor, Director of Online Education and Outreach, The Ohio State University; Agronomy & Horticulture Adjunct Professor, University of Nebraska
dcovert2@unl.edu

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Erosion

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Impacts of Erosion on Air Quality

The following case study is an example of the effects of soil erosion on air quality.

Case Study 4 - Wind Erosion in the Columbia Plateau

The Columbia Plateau of eastern Washington, northeast Oregon, and the Idaho panhandle includes soils that are susceptible to wind erosion. A high concentration of aerosol-size particles (less than 10 micrometers) have contributed to respiratory health problems. Urban areas of the Columbia Plateau have exceeded the allowable limit of airborne particles as defined by the 1990 Clean Air Act. In this area, research has demonstrated that less frequent traffic and/or disturbance especially in crop lands can reduce dust emissions by up-to 94% during severe wind events. In addition, manure, plant residue, and minimizing the fallow period have proven to reduce wind erosion.

Dust blowing over a farmstead from a bare field. Image by the (NOAA) National Oceanic and Atmospheric Administration/Department of Commerce.

Map of the Columbia Plateau. Image by the United States Geological Survey

For more information:

http://pnw-winderosion.wsu.edu/

http://topsoil.nserl.purdue.edu/nserlweb-old/isco99/pdf/ISCOdisc/SustainingTheGlobalFarm/P183-Saxton.pdf

Thinking Question:

Discuss how wind erosion impacts water quality.

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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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