Soil Nitrogen

AUS-AIF-LVG-SON General Moderate confidence

Benchmark Value

No specific value — see range
Range: 900 to 1400 mg/kg
Optimal Range: 900 to 1400
Direction: Higher 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 3 benchmarks together — the OptimalRange form drives the primary score, while 2 guard(s) constrain the result.

Evidence & Context

Based on this evidence, an optimal functional range for Total Nitrogen in floodplain Vertosols is estimated to be 900 to 1400 mg/kg.

Metric Definition:

Optimal functional range of Total Soil Nitrogen concentration supporting healthy ecosystem function.

Benchmark Definition:

This benchmark represents the optimal range of Total Soil Nitrogen concentration in Vertosol floodplain soils that supports a healthy and resilient ecosystem under best-practice grazing management.

Justification:

Derived from values observed in high-condition arid and semi-arid sites and higher rainfall semi-arid floodplains.

Sources (1)

Preview of Soil-landscape and vegetation indicators of condition in the Channel Country, Queensland, Australia
Soil-landscape and vegetation indicators of condition in the Channel Country, Queensland, Australia

Soil-landscape and vegetation indicators of condition in the Channel Country, Queensland, Australia

View Source

Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

Preview of Channel Country bioregion - DCCEEW, accessed July 21, 2025
Channel Country bioregion - DCCEEW, accessed July 21, 2025
Direct Evidence Journal

Channel Country bioregion - DCCEEW, accessed July 21, 2025

View Source

Context

  • Region Australia
  • Biome Arid Inland Floodplains & Ephemeral River Systems
  • Land Use Livestock Grazing & Pasture
  • Assessment Not Stated
  • Evidence Type HealthyOperationalRange

Lifecycle

  • Status Active
  • Version 1
  • Effective From 9 Jun 2026

Notes

Soils within this range possess sufficient nitrogen capital to support healthy perennial plant communities and robust microbial activity. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.