Erosion Susceptibility Analysis#

RUSLE-based erosion susceptibility analysis using LS-factor, STI, SPI, profile curvature, and slope. Produces an Erosion Susceptibility Index (ESI) scaled 0-100 with 5-level classification.

Inputs:

  • Terrain Analysis Package (ZIP). ZIP file from terrain_analysis containing DEM, slope, flow accumulation, curvature, STI, SPI, and manifest.json

  • Weight: LS-Factor. Weight for the LS-factor indicator (default: 0.35)

  • Weight: STI. Weight for the Sediment Transport Index (default: 0.25)

  • Weight: SPI. Weight for the Stream Power Index (default: 0.15)

  • Weight: Curvature. Weight for the profile curvature indicator (default: 0.10)

  • Weight: Slope. Weight for the slope indicator (default: 0.15)

  • Hotspot Threshold. ESI value above which areas are classified as hotspots (default: 65)

  • Spectral Indices Package (ZIP). Optional ZIP from spectral_indices with vegetation index aggregates. When provided, a vegetation indicator is added to the weighted overlay.

  • Weight: Vegetation Index. Weight for the vegetation index indicator (default: 0.10). Only used when spectral_zip is provided. Other weights are scaled down proportionally.

Outputs:

  • Erosion Analysis Package (ZIP). ZIP archive with erosion susceptibility rasters, vectors, statistics, and manifest

  • Summary. Human-readable summary of the erosion analysis results

  • Manifest JSON. JSON manifest string describing all outputs

Launch the tool: https://toolbox.nextgis.com/t/erosion_analysis

Example:

../../_images/analysis_input_en.png

Fig. 135. Example input#

../../_images/erosion_analysis_result_en.png

Fig. 136. Example output#

Try the tool in action

  1. Click on the Demo button above the tool form. The fields are filled in with demo values.

  2. Click on the Run button.

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