Soil Electrical Conductivity (EC)

AUS-TMI-CON-SEC General Moderate confidence

Benchmark Value

No specific value — see range

Range: 0 to 0.4 dS/m

Optimal Range: 0 to 0.4

Direction: Lower is desirable ↓

Form: OptimalRange

Scoring Curve

This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 10 benchmarks together — the OptimalRange form drives the primary score, while 9 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary OptimalRange Guard MaximumOnly Guard OptimalRange Guard Point Guard MaximumOnly Guard OptimalRange Guard MinimumOnly Guard OptimalRange Guard MaximumOnly Guard

Evidence & Context

The optimal range for soil EC in these conservation areas is therefore defined as <0.4 dS/m (EC1:5).

Metric Definition:

Soil Electrical Conductivity (EC1:5) measured in a 1:5 soil:water suspension

Benchmark Definition:

The optimal soil electrical conductivity range for conservation areas in Australia's Tropical & Subtropical Maritime Islands biome is below 0.4 dS/m, supporting ecosystem resilience within a non-saline state.

Justification:

Combines 'Very low' and 'Low' salinity classes from CSIRO manual, accounting for natural variation across soil types.