Soil Nitrogen
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 3 benchmarks together — the OptimalRange form drives the primary score, while 2 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
For a production forestry system on a loamy sand soil, an optimal range for total soil nitrogen in the top 0-15 cm would be 500 – 1000 mg/kg.
Optimal functional range of total soil nitrogen in the topsoil layer (0-15 cm) for production forestry
Optimal functional range of total soil nitrogen supporting productive tree growth and native understorey health in Australian Temperate Grassy Woodlands & Plains production forestry on loamy sand soil.
Expert-derived range centered on the benchmark to balance nutrient demands and maintain low-nutrient adapted understorey.
Sources (1)
Elevated carbon dioxide increases soil nitrogen and phosphorus availability in a phosphorus-limited Eucalyptus woodland
View SourceSupporting Sources (5)
Additional references from the underlying research that informed this benchmark.
How Past Rainfall Shapes Australia's Dryland Ecosystems - Western Sydney University
View SourceEFFECTS OF INTENSIFIED HARVESTING ON RATES OF NITROGEN AND PHOSPHORUS REMOVAL FROM PINUS RADIATA AND EUCALYPTUS FORESTS IN AUSTR
View SourceLiving soils in agriculture | TERN Australia, accessed July 16, 2025,
View SourceSoil management guides - NSW Department of Primary Industries
View SourcePlant nutrients in the soil - NSW Department of Primary Industries
View Source