Wind Erosion Prediction and Control

• Published in: Water science and technology Vol. 28; no. 3-5; pp. 519 - 527
• Main Authors: Nanney, R D, Fryrear, D W, Zobeck, T M
• Format: Journal Article
• Language: English
• Published: London IWA Publishing 01-01-1993
• Subjects: Agricultural research; Agriculture; Air pollution; Climatology; Computer simulation; Cover crops; Crop damage; Crop production; Crop residues; Crops; Data collection; Decomposition; Erosion; Erosion control; Erosion mechanisms; Erosion rates; Farms; Forecasting; Hydrology; Lakes; Mathematical models; Soil; Soil conservation; Soil erosion; Soil pollution; Soil properties; Soil surfaces; Tillage; Topsoil; Water pollution; Wind effects; Wind erosion; Windbreaks
• ISSN: 0273-1223; 1996-9732
• DOI: 10.2166/wst.1993.0455

Few regions of the United States are entirely safe from wind erosion. Whenever the soil surface is loose and dry with limited crop residue cover, and the wind sufficiently strong, soil erosion will occur. Soil erosion by wind causes diffuse pollution, loss of topsoil, reduced crop production, and damage to both public and private facilities. Factors contributing to the wind erosion process can vary daily. This complex process presents a challenge to the science of wind erosion prediction and control. USDA Agricultural Research Service is developing a new Wind Erosion Prediction System (WEPS) to overcome the limitations of the existing Wind Erosion Equation (WEQ). WEPS is a computer based model with submodels for crops, soils, tillage, erosion, weather, hydrology, and decomposition. USDA Soil Conservation Service assisted with the characterization of changes in the temporal soil properties of the tillage zone and ground surface and erosion rates at a validation site in the Great Lakes region. The results of the data collection for the soils and erosion submodels and a discussion of a windbreak demonstration site show the dynamic nature of the wind erosion process.