GIS-based upland erosion mapping

• Main Authors: Teh S.H., Sidek L.M., Julien P.Y., Luis J.
• Other Authors: 56789696100
• Format: Book Chapter
• Published: CRC Press 2023

The main source of sediments in reservoirs is from upland erosion. Morgan and Davidson [22] and Julien [15,16] describe soil erosion processes and dynamics that have been studied for decades. The main factors contributing to upland erosion losses include rainfall erosivity, soil erodibility, land topography, land use, and land conservation practices [9]. Specific degradation rates in reservoirs of the United States are typically less than 2000 tons/km2/year [18] and are primarily linked to upland erosion rates. Upland erosion losses have been estimated using well-known methods like the Universal Soil Loss Equation (USLE) from Wischmeier and Smith [34]. The USLE includes all the factors affecting upland erosion from sheet and rill erosion. Renard et al. [25] provided a modified version named the Revised Universal Soil Loss Equation (RUSLE). © 2014 by Taylor & Francis Group, LLC.