Planic features (WRB 2022) — planic

Tests whether the profile shows an abrupt textural change between adjacent horizons (clay-doubling within 7.5 cm vertical distance, typically at the E/Bt boundary). Diagnostic of Planosols.

Usage

planic_features(pedon, min_ratio = 2, require_abrupt_boundary = TRUE)

Arguments

pedon: A PedonRecord.
min_ratio: Minimum clay ratio (default 2.0).
require_abrupt_boundary: If TRUE (default), the upper horizon must have boundary_distinctness matching "abrupt".

Value

A DiagnosticResult.

References

IUSS Working Group WRB (2022), Chapter 5, Planosols.