Tests whether any horizon meets the salic horizon criteria. The salic horizon is a horizon of soluble-salt accumulation, diagnostic for Solonchaks.
Usage
salic(
pedon,
min_thickness = 15,
min_ec_dS_m = 15,
alkaline_min_ec_dS_m = 8,
alkaline_min_pH = 8.5,
min_product = 450,
alkaline_min_product = 240
)Arguments
- pedon
A
PedonRecord.- min_thickness
Minimum thickness in cm (default 15).
- min_ec_dS_m
Primary EC threshold (default 15 dS/m at 25C).
- alkaline_min_ec_dS_m
Alkaline-path EC threshold (default 8 dS/m, used when pH(H2O) \>=
alkaline_min_pH).- alkaline_min_pH
Required pH(H2O) for alkaline path (default 8.5).
- min_product
Primary path product (EC * thickness in dS/m * cm) threshold (default 450 per WRB 2022).
- alkaline_min_product
Alkaline-path product threshold (default 240).
Details
Sub-tests called:
test_ec_concentration– EC \>= 15 dS/m (primary) OR (EC \>= 8 dS/m AND pH(H2O) \>= 8.5) (alkaline).test_minimum_thickness– thickness \>= 15 cm.test_salic_product– EC * thickness product \>= 450 (primary) or \>= 240 (alkaline) per qualifying layer.
v0.3.1: alkaline-path and product test added (WRB 2022 Ch 3.1.20, p. 49). Earlier versions only enforced the primary EC + thickness gate.