Chapter 4. Predicting Post-Fire Erosion and Sedimentation Risk on a Landscape Scale
| Autor: | Deborah A. Martin, Robert W. Sampson, Lee H. MacDonald, Don Brady, Leah Juarros |
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| Rok vydání: | 2000 |
| Předmět: |
Hydrology
Renewable Energy Sustainability and the Environment Soil texture Geography Planning and Development Forestry Vegetation Management Monitoring Policy and Law Sedimentation Universal Soil Loss Equation Fire protection Vegetation type Erosion Environmental science Risk assessment Food Science |
| Zdroj: | Journal of Sustainable Forestry. 11:57-87 |
| ISSN: | 1540-756X 1054-9811 |
| Popis: | Summary Historic fire suppression efforts have increased the likelihood of large wildfires in much of the western U.S. Post-fire soil erosion and sedimentation risks are important concerns to resource managers. In this paper we develop and apply procedures to predict post-fire erosion and sedimentation risks on a pixel-, catchment-, and landscape-scale in central and western Colorado. Our model for predicting post-fire surface erosion risk is conceptually similar to the Revised Universal Soil Loss Equation (RUSLE). One key addition is the incorporation of a hydrophobicity risk index (HY-RISK) based on vegetation type, predicted fire severity, and soil texture. Post-fire surface erosion risk was assessed for each 90-m pixel by combining HYRISK, slope, soil erodibility, and a factor representing the likely increase in soil wetness due to removal of the vegetation. Sedimentation risk was a simple function of stream gradient. Composite surface erosion and sedimentation risk indices were calculated and compare... |
| Databáze: | OpenAIRE |
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