Soil Nitrogen

AUS-AIF-FOR-SON General Moderate confidence

Benchmark Value

No specific value — see range

Range: 800 to 1500 mg/kg

Optimal Range: 800 to 1500

Direction: Higher is desirable ↑

Form: OptimalRange

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is CompositeFramework, 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.

Contributing Benchmarks

CompositeFramework Primary MaximumOnly Guard OptimalRange Guard MinimumOnly Guard MaximumOnly Guard Point Guard MinimumOnly Guard OptimalRange Guard MaximumOnly Guard Point Guard OptimalRange Guard Point Guard MinimumOnly Guard MaximumOnly Guard Point Guard MinimumOnly Guard MaximumOnly Guard OptimalRange Guard

Evidence & Context

An optimal functional range is proposed between 800 and 1500 mg/kg, reflecting the natural variability of a healthy, resilient system.

Metric Definition:

Total Soil Nitrogen concentration in the topsoil (0–30 cm)

Benchmark Definition:

This benchmark represents the optimal functional range of total soil nitrogen concentration in the topsoil that supports a healthy, resilient forest ecosystem in arid inland floodplains and ephemeral river systems under production forestry.

Justification:

This range accommodates the natural spatial and temporal variability of the ecosystem while remaining below levels that could trigger negative consequences.

Sources (1)

Preview of Changes in soil carbon and nitrogen stocks following tree clearing were estimated at 32 rangeland sites in central and southern Queensland

Changes in soil carbon and nitrogen stocks following tree clearing were estimated at 32 rangeland sites in central and southern Queensland Journal

Changes in soil carbon and soil nitrogen after tree clearing in the semi-arid rangelands of Queensland - CSIRO PUBLISHING | Australian Journal of Botany, accessed July 30, 2025,

View Source

Context

Region Australia
Biome Arid Inland Floodplains & Ephemeral River Systems
Land Use Production Forestry
Assessment Not Stated
Evidence Type HealthyOperationalRange

Lifecycle

Status Active
Version 1
Effective From 9 Jun 2026

Notes

Represents a healthy, stable native ecosystem with high resilience and the capacity to support sustainable production while maintaining biodiversity. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-AIF-FOR-SON family.