Soil Nitrogen — Benchmark Detail

Benchmark Value

No specific value — see range

Direction: Lower is desirable ↓

Form: CompositeFramework

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 MinimumOnly Guard OptimalRange Guard MaximumOnly Guard MinimumOnly Guard OptimalRange Guard MaximumOnly Guard Point Guard Point Guard MinimumOnly Guard MaximumOnly Guard MaximumOnly Guard

Evidence & Context

No specific Total Soil Nitrogen (TSN) value or range from a peer-reviewed study or government report has been identified that explicitly quantifies TSN for the "best available condition" or "high environmental health" under best-practice sustainable/regenerative livestock grazing specifically within the Australian Alpine and Subalpine Complex.

Metric Definition:

Total Soil Nitrogen (TSN) represents the total reservoir of nitrogen held within the soil, encompassing organic and inorganic forms.

Benchmark Definition:

This benchmark represents the concept that Total Soil Nitrogen (TSN) in Australian alpine and subalpine livestock grazing and pasture systems should be maintained or increased towards levels characteristic of healthy, naturally functioning alpine ecosystems. While no specific numerical benchmark exists, excessive localized nitrogen can cause ecological harm.

Justification:

Due to the critical lack of direct, specific research data for Australian alpine/subalpine best-practice grazing systems that links TSN values to validated states of high ecological health, a precise numerical benchmark cannot be confidently assigned from the available evidence.

Sources (4)

Preview of (PDF) Nitrogen dynamics in alpine soils of south-eastern Australia, accessed on May 31, 2025

(PDF) Nitrogen dynamics in alpine soils of south-eastern Australia, accessed on May 31, 2025 GreyLiterature

Australia state of the environment 2021: land, accessed on May 28, 2025

View Source

Preview of Sheep camping influences soil properties and pasture production in an acidic soil of New South Wales, Australia - ResearchGate

Sheep camping influences soil properties and pasture production in an acidic soil of New South Wales, Australia - ResearchGate GreyLiterature

What are the optimum nutrient targets for pastures?

View Source

What are the optimum nutrient targets for pastures? - Soil Health Knowledgebase, accessed August 5, 2025, Government

What are the optimum nutrient targets for pastures? - Soil Health Knowledgebase, accessed July 18, 2025

View Source

Preview of www.barrierreef.org, accessed on May 25, 2025,

www.barrierreef.org, accessed on May 25, 2025, Journal

Regenerative Agriculture Program restoring soil pH case study: Macdonald, Whites Flat/Koppio, accessed July 18, 2025,

View Source

Supporting Sources (9)

Additional references from the underlying research that informed this benchmark.

Preview of Australian dryland soils are acidic and nutrient‐depleted, and have unique microbial communities compared with other drylands - Arid Ecology Lab, accessed August 3, 2025

Australian dryland soils are acidic and nutrient‐depleted, and have unique microbial communities compared with other drylands - Arid Ecology Lab, accessed August 3, 2025

Direct Evidence Government

Soil Inorganic Carbon, the Other and Equally Important Soil Carbon Pool: Distribution, Controlling Factors, and the Impact of C

View Source

Fire Effects on Soils and Restoration Strategies - National Academic Digital Library of Ethiopia, accessed May 10, 2026

Contextual Support Journal

Grover, S.E., et al. (2023). Nitrogen dynamics in alpine soils of south-eastern Australia. Soil Research, 61(6), 560-568. 1

View Source

Impact of atmospheric Nitrogen deposition on upland and alpine ecosystems

Contextual Support Journal

Impact of atmospheric Nitrogen deposition on upland and alpine ecosystems

View Source

Preview of Kirkpatrick, J.B., et al. (2014). Patterns of variation in Australian alpine soils and their relationships to parent material, vegetation formation, climate and topography. CATENA, 121, 186-194.

Kirkpatrick, J.B., et al. (2014). Patterns of variation in Australian alpine soils and their relationships to parent material, vegetation formation, climate and topography. CATENA, 121, 186-194.

Contextual Support Journal

Kirkpatrick, J.B., et al. (2014). Patterns of variation in Australian alpine soils and their relationships to parent material, vegetation formation, climate and topography. CATENA, 121, 186-194. 5

View Source

Preview of Orgill, S.E., et al. (2026). Maintaining appropriate levels of carbon and nitrogen in soils is critical to the maintenance of productivity in agricultural systems. PLOS ONE, 21(2), e0342006.

Orgill, S.E., et al. (2026). Maintaining appropriate levels of carbon and nitrogen in soils is critical to the maintenance of productivity in agricultural systems. PLOS ONE, 21(2), e0342006.

Contextual Support Journal

Orgill, S.E., et al. (2026). Maintaining appropriate levels of carbon and nitrogen in soils is critical to the maintenance of productivity in agricultural systems. PLOS ONE, 21(2), e0342006. 11

View Source

Preview of Patterns of variation in Australian alpine soils and their relationships to parent material, vegetation formation, climate and topography | Request PDF - ResearchGate, accessed August 3, 2025,

Patterns of variation in Australian alpine soils and their relationships to parent material, vegetation formation, climate and topography | Request PDF - ResearchGate, accessed August 3, 2025,

Direct Evidence Journal

Water infiltration rate as affected by grazing land management ...

View Source

Soil microbial communities respond to an environmental gradient

Contextual Support Journal

Wilson, J.P., et al. (2021). Soils of the Australian Alps. Austral Ecology, 46(8), 1256-1272. 4

View Source

STATEMENTS OF UNACCEPTABILITY OF GRAZING IN THE AUSTRALIAN ALPS

Contextual Support

Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed May 10, 2026

View Source

theaustralianalpsnationalparks.org, accessed on May 29, 2025,

Contextual Support Journal

Soil Conservation in Alpine Catchments - The Kosciuszko Huts Association, accessed August 17, 2025,

View Source

Context

Region Australia
Biome Alpine and Subalpine Complex
Land Use Livestock Grazing & Pasture
Assessment Not Stated
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 1 Jun 2026

Notes

The guiding principle is that sustainable grazing should maintain or increase TSN towards levels characteristic of healthy, naturally functioning alpine ecosystems with high organic carbon and nitrogen. Localized nutrient hotspots with TSN >3800 mg/kg show detrimental ecological effects, indicating an upper limit for specific locations but no landscape-scale threshold is defined. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.