Soil Organic Carbon (SOC)

AUS-TMI-AGR-SOC General Moderate confidence

Benchmark Value

No specific value — see range
Direction: Higher 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 OptimalRange Guard MinimumOnly Guard OptimalRange Guard MinimumOnly Guard Point Guard CompositeFramework Guard MinimumOnly Guard OptimalRange Guard

Evidence & Context

Upper Boundary Consideration: The literature does not support a detrimental threshold for inherent SOC; higher levels up to a soil's natural saturation capacity are associated with increased resilience and function.

Metric Definition:

Soil Organic Carbon (SOC) concentration in the top 0–10 cm of soil.

Benchmark Definition:

The natural biophysical saturation capacity of soil for Soil Organic Carbon without ecological harm in tropical maritime island agricultural soils.

Justification:

Scientific literature indicates no detrimental ecological effects from reaching natural SOC saturation; high SOC is linked to positive soil functions.

Sources (3)

Preview of critical soil organic carbon range for optimal crop response to mineral fertiliser nitrogen on a ferralsol - ResearchGate, accessed August 3, 2025,
critical soil organic carbon range for optimal crop response to mineral fertiliser nitrogen on a ferralsol - ResearchGate, accessed August 3, 2025,

National Soil Strategy

View Source
Preview of National Soil Strategy, accessed August 3, 2025,
National Soil Strategy, accessed August 3, 2025, Journal

soils - of the australian alps

View Source
Preview of Soil Carbon Saturation: What Do We Really Know? - PMC - PubMed Central
Soil Carbon Saturation: What Do We Really Know? - PMC - PubMed Central Journal

Soil Carbon Saturation: What Do We Really Know? - PMC - PubMed Central

View Source

Supporting Sources (37)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Soil Organic Carbon – Role in Rainfed Farming Systems With ...
(PDF) Soil Organic Carbon – Role in Rainfed Farming Systems With ...
Contextual Support GreyLiterature

Soil Organic Carbon – Role in Rainfed Farming Systems With Particular Reference to Australian Conditions - ResearchGate

View Source
Preview of a comparisonof the soils of tropical latin america ano tropical australia
a comparisonof the soils of tropical latin america ano tropical australia
Contextual Support Journal

A comparison of the soil of tropical latin america and tropical australia

View Source
Preview of Addressing the rundown of nitrogen and soil organic carbon - GRDC, accessed July 25, 2025,
Addressing the rundown of nitrogen and soil organic carbon - GRDC, accessed July 25, 2025,
Direct Evidence Journal

Soil | Australia state of the environment 2021

View Source
Preview of AGRICULTURAL AUDIT & LAND USE CAPABILITY ASSESSMENT ..., accessed July 30, 2025,
AGRICULTURAL AUDIT & LAND USE CAPABILITY ASSESSMENT ..., accessed July 30, 2025,
Contextual Support Journal

VEGETATION 0}' LORD HOWE ISLAND - Botanic Gardens of Sydney

View Source
Preview of Australia's bioregions (IBRA) - DCCEEW, accessed July 15, 2025
Australia's bioregions (IBRA) - DCCEEW, accessed July 15, 2025
Contextual Support

Interim Biogeographic Regionalisation for Australia (IBRA), Version 7 (Regions)

View Source
Preview of Can best agricultural practices saturate the organic carbon in tropical soils? - ResearchGate
Can best agricultural practices saturate the organic carbon in tropical soils? - ResearchGate
Contextual Support GreyLiterature

Can best agricultural practices saturate the organic carbon in tropical soils? - ResearchGate, accessed July 19, 2025

View Source
Preview of Carbon farming | CottonInfo
Carbon farming | CottonInfo
Contextual Support GreyLiterature

Carbon farming | CottonInfo

View Source
Preview of Characteristics and Drivers of Soil Organic Carbon Saturation Deficit in Karst Forests of China - MDPI
Characteristics and Drivers of Soil Organic Carbon Saturation Deficit in Karst Forests of China - MDPI
Contextual Support Journal

Mapping soil organic carbon fractions for Australia, their stocks, and uncertainty - BG

View Source
Preview of Climate of Australia - Wikipedia, accessed July 13, 2025
Climate of Australia - Wikipedia, accessed July 13, 2025
Contextual Support GreyLiterature

Climate of Australia - Wikipedia

View Source
Preview of Common soil types | Environment, land and water - Queensland Government, accessed August 9, 2025
Common soil types | Environment, land and water - Queensland Government, accessed August 9, 2025
Contextual Support Government

Sodic & Alkaline Soil - Soil Quality Knowledge Base

View Source
Preview of Common soil types | Environment, land and water | Queensland ...
Common soil types | Environment, land and water | Queensland ...
Contextual Support Government

Phosphorus nutrition of phosphorus-sensitive Australian native ...

View Source
Preview of critical soil organic carbon range for optimal crop response to mineral fertiliser nitrogen on a ferralsol - ResearchGate
critical soil organic carbon range for optimal crop response to mineral fertiliser nitrogen on a ferralsol - ResearchGate
Contextual Support GreyLiterature

critical soil organic carbon range for optimal crop response to mineral fertiliser nitrogen on a ferralsol - ResearchGate

View Source
Preview of Ecological Regions Of Australia - WorldAtlas, accessed July 27, 2025,
Ecological Regions Of Australia - WorldAtlas, accessed July 27, 2025,
Contextual Support GreyLiterature

Ecological Regions Of Australia - WorldAtlas, accessed August 4, 2025,

View Source
Preview of Enhancing Organic Carbon Content in Tropical Soils: Strategies for Sustainable Agriculture and Climate Change Mitigation - ResearchGate
Enhancing Organic Carbon Content in Tropical Soils: Strategies for Sustainable Agriculture and Climate Change Mitigation - ResearchGate
Contextual Support Journal

AGRICULTURAL AUDIT & LAND USE CAPABILITY ASSESSMENT - Norfolk Island Regional Council

View Source
Preview of Growing soil organic carbon in dryland agricultural systems - CSIRO Publishing, accessed July 6, 2025,
Growing soil organic carbon in dryland agricultural systems - CSIRO Publishing, accessed July 6, 2025,
Contextual Support Journal

Regenerative agriculture in Australia: the changing face of farming - Frontiers, accessed July 8, 2025

View Source
Preview of HOW TO MEASURE AND INTERPRET RESULTS IN RELATION TO SOIL ORGANIC CARBON - Grains Research and Development Corporation (GRDC), accessed August 5, 2025,
HOW TO MEASURE AND INTERPRET RESULTS IN RELATION TO SOIL ORGANIC CARBON - Grains Research and Development Corporation (GRDC), accessed August 5, 2025,
Methodology Source Journal

(PDF) Soil organic carbon stocks in saline and sodic landscapes

View Source
Preview of Is there any optimum range for organic carbon found in tropical soils? - ResearchGate
Is there any optimum range for organic carbon found in tropical soils? - ResearchGate
Contextual Support Journal

Is there any optimum range for organic carbon found in tropical soils? - ResearchGate

View Source
Preview of Lord Howe Island Palms
Lord Howe Island Palms
Contextual Support GreyLiterature

Lord Howe Island supports a once-contiguous population of palm trees. Two soil types emerged on the - Chegg

View Source
Preview of Managing soil organic carbon in tropical agroecosystems: evidence from four long-term experiments in Kenya - Agritrop
Managing soil organic carbon in tropical agroecosystems: evidence from four long-term experiments in Kenya - Agritrop
Contextual Support Journal

Managing soil organic carbon in tropical agroecosystems: evidence from four long-term experiments in Kenya - Agritrop

View Source
Preview of Mapping soil organic carbon fractions for Australia, their stocks, and uncertainty - BG, accessed July 6, 2025,
Mapping soil organic carbon fractions for Australia, their stocks, and uncertainty - BG, accessed July 6, 2025,
Contextual Support Journal

Benefits and trade-offs of soil organic carbon sequestration - OAPEN Library

View Source
Preview of Norfolk Island Plant Communities - Jerry Coleby-Williams
Norfolk Island Plant Communities - Jerry Coleby-Williams
Contextual Support Journal

Norfolk Island Plant Communities - Jerry Coleby-Williams

View Source
Preview of Regenerative agriculture in Australia: the changing face of farming - Frontiers
Regenerative agriculture in Australia: the changing face of farming - Frontiers
Contextual Support GreyLiterature

Regenerative agriculture in Australia: the changing face of farming - Frontiers

View Source
Preview of Regenerative Agriculture—A Literature Review on the Practices and Mechanisms Used to Improve Soil Health - MDPI, accessed August 5, 2025,
Regenerative Agriculture—A Literature Review on the Practices and Mechanisms Used to Improve Soil Health - MDPI, accessed August 5, 2025,
Contextual Support Journal

Regenerative Agriculture—A Literature Review on the Practices and Mechanisms Used to Improve Soil Health - MDPI, accessed July 20, 2025,

View Source
Preview of Responses to controlled release potassium fertilisers in agriculture following phosphate mining - CSIRO PUBLISHING | Soil Research, accessed July 30, 2025,
Responses to controlled release potassium fertilisers in agriculture following phosphate mining - CSIRO PUBLISHING | Soil Research, accessed July 30, 2025,
Contextual Support Journal

Cocos nucifera L. - Forest Service, accessed July 30, 2025

View Source
Preview of Soil carbon | Environment, land and water - Queensland Government
Soil carbon | Environment, land and water - Queensland Government
Direct Evidence Journal

Soil carbon | Environment, land and water - Queensland Government

View Source
Preview of Soil carbon saturation: Linking concept and measurable carbon pools
Soil carbon saturation: Linking concept and measurable carbon pools
Contextual Support Journal

Soil carbon saturation: Linking concept and measurable carbon pools, accessed July 19, 2025

View Source
Preview of Soil Carbon Sequestration Potential: A review for Australian agriculture - MLA, accessed August 5, 2025,
Soil Carbon Sequestration Potential: A review for Australian agriculture - MLA, accessed August 5, 2025,
Contextual Support GreyLiterature

Coexistence of shrubs and grass in a semi-arid landscape: a case study of mulga (Acacia aneura, Mimosaceae) shrublands embedded in fire-prone spinifex (Triodia pungens, Poaceae) hummock grasslands - CSIRO PUBLISHING | Australian Journal of Botany

View Source
Preview of Soil Carbon Snapshot - Agriculture Victoria, accessed August 5, 2025,
Soil Carbon Snapshot - Agriculture Victoria, accessed August 5, 2025,
Contextual Support Journal

Soil Carbon Snapshot - Agriculture Victoria

View Source
Preview of Soil organic carbon and total nitrogen under Leucaena leucocephala pastures in Queensland - ResearchGate
Soil organic carbon and total nitrogen under Leucaena leucocephala pastures in Queensland - ResearchGate
Direct Evidence Journal

Soil organic carbon and total nitrogen under Leucaena leucocephala pastures in Queensland

View Source
Preview of Soil organic carbon is at risk in a large part of European agricultural land - EU Science Hub
Soil organic carbon is at risk in a large part of European agricultural land - EU Science Hub
Contextual Support Government

Soil carbon | Environment, land and water - Queensland Government, accessed July 19, 2025

View Source
Preview of Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects - JRC Publications Repository, accessed August 3, 2025,
Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects - JRC Publications Repository, accessed August 3, 2025,
Direct Evidence GreyLiterature

Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects - JRC Publications Repository, accessed August 3, 2025

View Source
Preview of Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects - ResearchGate, accessed July 25, 2025,
Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects - ResearchGate, accessed July 25, 2025,
Direct Evidence Journal

Soil Organic Carbon Thresholds and Nitrogen Management in Tropical Agroecosystems: Concepts and Prospects - ResearchGate

View Source
Preview of Soil organic matter in dryland systems – management and opportunities - GRDC
Soil organic matter in dryland systems – management and opportunities - GRDC
Contextual Support Government

Soil Respiration and Carbon Balance Under Cover Crop in a no-Till Tropical Fruit Orchard - Frontiers

View Source
Preview of The Stories Beneath the Soil: Norfolk Island's Unique Flora and Its Secrets
The Stories Beneath the Soil: Norfolk Island's Unique Flora and Its Secrets
Contextual Support Government

Pulu Keeling National Park Management Plan 2015-2025 - DCCEEW

View Source
Preview of The Stories Beneath the Soil: Norfolk Island's Unique Flora and Its Secrets, accessed July 25, 2025,
The Stories Beneath the Soil: Norfolk Island's Unique Flora and Its Secrets, accessed July 25, 2025,
Contextual Support GreyLiterature

Geology - Norfolk Island Flora & Fauna Society

View Source
Preview of Too Much Organic Matter - Maine Organic Farmers and Gardeners Association
Too Much Organic Matter - Maine Organic Farmers and Gardeners Association
Contextual Support GreyLiterature

Too Much Organic Matter - Maine Organic Farmers and Gardeners Association

View Source
Preview of Tropical Forests and Grasslands (Savanna) - Soils 4 Teachers
Tropical Forests and Grasslands (Savanna) - Soils 4 Teachers
Contextual Support GreyLiterature

Tropical Forests and Grasslands (Savanna) - Soils 4 Teachers

View Source

Context

  • Region Australia
  • Biome Tropical & Subtropical Maritime Islands
  • Land Use Agricultural Crop Production
  • Assessment Not Stated
  • Evidence Type ReferenceCondition

Lifecycle

  • Status Active
  • Version 1
  • Effective From 4 Jun 2026

Notes

No upper detrimental threshold — higher values are always better up to natural saturation. The upper boundary is a natural saturation limit determined by soil texture, not a harm threshold. Detrimental effects arise only from excessive external organic amendments, not from inherent SOC levels. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TMI-AGR-SOC family.

— % Moderate
Agricultural Crop Production · Conservation Target
OptimalRange Active v1
2.5 % Low
Agricultural Crop Production · Conservation Target
Point Active v1