Soil pH
Benchmark Value
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 16 benchmarks together — the OptimalRange form drives the primary score, while 15 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
A proposed reference soil pH (1:5 soil:water) range for production forestry in Australian alpine and subalpine ecosystems is pH 5.0 to 5.5.
Soil pH measured as a 1:5 soil:water suspension
This benchmark defines the target soil pH range for production forestry in Australian alpine and subalpine ecosystems, balancing natural soil acidity with species preferences to support sustainable productivity and soil function.
This proposed range balances natural alpine soil acidity with the lower end of target species' preference; aims for sustainable productivity without excessive intervention; supports robust soil functions.
Sources (1)
Soil pH | Environment, land and water - Queensland Government, accessed August 28, 2025,
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