Sphy Manual 3.0
  • 📚Readme
  • manual
    • SPHY Manual
      • Introduction
      • Theory
        • Background
        • Modules
        • Reference and potential evaporation
        • Dynamic vegetation processes
        • Snow processes
        • Glacier processes
        • Soil water processes
        • Soil erosion processes
        • Routing
      • Applications
        • Irrigation management in lowland areas
        • Snow- and glacier-fed river basins
        • Flow forecasting
      • Installation of SPHY
      • Build your own SPHY-model
        • Select projection extent and resolution
        • Clone map
        • DEM and Slope
        • Delineate catchment and create local drain direction map
        • Preparing stations map and sub-basins map
        • Glacier fraction map
        • Soil hydraulic properties
        • Other static input maps
        • Meteorological forcing map series
        • Open water evaporation
        • Soil erosion model input
        • Sediment transport
        • Reporting
      • References
      • Copyright
Powered by GitBook
On this page
Edit on GitHub
  1. manual
  2. SPHY Manual
  3. Build your own SPHY-model

Soil erosion model input

The soil erosion model needs input data for each of the landuse classes, as provided in the landuse map. The user needs to provide a PCRaster table file (*.tbl), where each row represents a landuse class. The following data needs to be provided (with the numbers corresponding to the column numbers):

  1. Landuse class

  2. Plant height in m (PH)

  3. Stem density in stems m-2 (NV)

  4. Stem diameter in m (D)

  5. Canopy cover, from 0 to 1 (CC), only in case canopy cover is not obtained from LAI

  6. Ground cover, from 0 to 1 (GC)

  7. No erosion flag, 0 or 1 (e.g. for urban and water landuse classes)

  8. Tillage flag, 0 or 1

  9. Manning in s m-1/3, is only used when the value is bigger than 0

  10. No vegetation flag, 0 or 1, is used to switch off the roughness calculation for vegetation (Equation 67)

The model provides an optional table to provide changes in the landuse-specific soil erosion parameters after harvest of a crop. The following data needs to be provided (with the numbers corresponding to the column numbers):

  1. Landuse class

  2. Sowing date, as day of the year

  3. Harvest date, as day of the year

  4. Plant height in m (PH)

  5. Stem density in stems m-2 (NV)

  6. Stem diameter in m (D)

  7. Canopy cover, from 0 to 1 (CC), only in case canopy cover is not obtained from LAI

  8. Ground cover, from 0 to 1 (GC)

  9. Tillage flag, 0 or 1

PreviousOpen water evaporationNextSediment transport

Last updated 2 years ago