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 2 benchmarks together — the OptimalRange form drives the primary score, while 1 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Reference Soil pH (1:5 soil:water) Value/Range: A target operational window of pH 5.0 – 5.5.
Soil pH measured as a 1:5 soil:water suspension.
This benchmark defines the target soil pH range of 5.0 to 5.5 for sustainable production forestry in the Alpine and Subalpine Complex biome, balancing natural soil acidity with species preferences to support healthy soil functions and productivity.
Balances natural alpine soil acidity with lower end of target species' preference; aims for sustainable productivity without excessive intervention; supports robust soil functions.
Sources (1)
Caritat, P. de, & Cooper, M. (2011). The pH of Australian soils: Field results from a national survey. Soil Research, 49, 172-182.
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