Soil Fertility Index (F2) — indicator_soil

Calculates soil fertility potential by combining TWI (water/nutrient accumulation) and slope (erosion risk). Follows the tuto 03 methodology: F2 = (twi_norm + slope_norm) / 2

Usage

indicator_soil_erosion(units, layers, dem_layer = "dem")

Arguments

units: nemeton_units object
layers: nemeton_layers object containing DEM raster
dem_layer: Character. Name of DEM layer

Value

Numeric vector of fertility scores (0-100, higher = more fertile)

Details

TWI is computed via GRASS (fasterRaster) when available, terra D8 otherwise. Higher values indicate more fertile soil conditions.

Examples

if (FALSE) { # \dontrun{
layers <- nemeton_layers(rasters = list(dem = "dem.tif"))
results <- indicator_soil_erosion(units, layers)
} # }