Soil Nitrogen

AUS-TSW-LVG-SON General Moderate confidence

Benchmark Value

760 mg/kg

Direction: Higher is desirable ↑

Form: Point

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is Point, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.

Evidence & Context

Best-on-Offer TN (mg/kg) for Loamy soils is 760, derived from mean pasture SOC and a C:N ratio of 25:1.

Metric Definition:

Total soil nitrogen concentration in mg/kg at 0-10 cm depth for loamy soils under best-practice grazing management.

Benchmark Definition:

This benchmark represents the best-on-offer total soil nitrogen concentration for loamy soils in Australian temperate semi-arid woodlands under best-practice grazing management, indicating healthy soil nitrogen levels within an optimal range.

Justification:

Derived from large-scale SOC data and a biome-appropriate C:N ratio of 25:1, representing a healthy, stable system under best-practice grazing.

Sources (2)

Preview of Review of C:N Ratios in Vegetation, Litter and Soil Under Australian Native Forests and Plantations - DCCEEW

Review of C:N Ratios in Vegetation, Litter and Soil Under Australian Native Forests and Plantations - DCCEEW Journal

Review of C:N Ratios in Vegetation, Litter and Soil ... - DCCEEW

View Source

Soil carbon monitoring and trends - Department for Environment and Water, accessed August 5, 2025, Government

Soil carbon monitoring and trends - Department for Environment and Water

View Source

Context

Region Australia
Biome Temperate Semi-Arid Shrublands & Open Woodlands
Land Use Livestock Grazing & Pasture
Assessment Not Stated
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 10 Jun 2026

Notes

Lower Critical Threshold: 500 mg/kg. Upper Detrimental Threshold: 1000 mg/kg. Represents a reference condition for loamy soils in the biome; lower and upper functional thresholds define the optimal range and detrimental levels. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TSW-LVG-SON family.