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
Therefore, a Total N concentration of approximately 600 mg/kg is proposed as the lower critical threshold for Vertosols in this biome.
Lower critical threshold concentration of Total Soil Nitrogen below which ecosystem function is compromised.
This benchmark defines the minimum concentration of Total Soil Nitrogen in Vertosol soils of this biome, below which essential ecosystem functions are significantly impaired.
Supported by studies showing degraded sites with Total N around 560 mg/kg and a 43% reduction from good condition sites.
Sources (1)
Soil-landscape and vegetation indicators of condition in the Channel Country, Queensland, Australia
View SourceSupporting Sources (1)
Additional references from the underlying research that informed this benchmark.
Channel Country bioregion - DCCEEW, accessed July 21, 2025
View Source