Soil Nitrogen
Benchmark Value
Scoring Curve
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
Evidence & Context
An upper detrimental threshold is identified at levels above 2000 mg/kg. Exceeding this threshold through artificial inputs poses a high risk of severe negative ecological consequences, including a significant loss of native understorey biodiversity, invasion by nitrophilic weeds, and off-site nutrient pollution of sensitive waterways.
Total Soil Nitrogen concentration in the topsoil (0–30 cm)
This benchmark defines the upper detrimental threshold of total soil nitrogen concentration in the topsoil above which severe negative ecological consequences occur in arid inland floodplains and ephemeral river systems under production forestry.
Levels above 2000 mg/kg indicate artificial nutrient enrichment and a high risk of ecological degradation including biodiversity loss and water pollution.
Sources (1)
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,
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