Soil Structure & Compaction

AUS-TMI-FOR-SSC General Moderate confidence

Benchmark Value

1300 kPa
Direction: Lower is desirable ↓
Form: MinimumOnly

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 13 benchmarks together — the OptimalRange form drives the primary score, while 12 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary MinimumOnly Guard MinimumOnly Guard UpperThreshold Guard MaximumOnly Guard MaximumOnly Guard MaximumOnly Guard OptimalRange Guard MinimumOnly Guard Point Guard MaximumOnly Guard OptimalRange Guard LowerThreshold Guard

Evidence & Context

A comprehensive review of Australian cotton-farming systems, which often deal with similar soil challenges, identifies a critical level of 2 MPa (2000 kPa) as a threshold above which soil strength restricts root elongation.

Metric Definition:

Soil penetration resistance measured by a cone penetrometer indicating soil strength at which root elongation is restricted.

Benchmark Definition:

This benchmark represents the critical soil penetration resistance threshold above which root elongation is restricted in soils under production forestry in the Tropical & Subtropical Maritime Islands biome of Australia.

Justification:

Identified from a review of Australian cotton-farming systems with similar soil challenges.

Sources (1)

Preview of Mechanical Resistance to Penetration for Improved Diagnosis of ..., accessed July 30, 2025,
Mechanical Resistance to Penetration for Improved Diagnosis of ..., accessed July 30, 2025, Journal

Mechanical Resistance to Penetration for Improved Diagnosis of Soil Compaction at Grazing and Forest Sites - MDPI

View Source

Supporting Sources (32)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Review of factors affecting disturbance, compaction and trafficability of soils with particular reference to timber harvesting in the forests of south-west Western Australia - ResearchGate, accessed July 30, 2025,
(PDF) Review of factors affecting disturbance, compaction and trafficability of soils with particular reference to timber harvesting in the forests of south-west Western Australia - ResearchGate, accessed July 30, 2025,
Contextual Support

Sustainable forest management and the ecosystem approach - An Australian perspective, accessed July 11, 2025,

View Source
Preview of (PDF) Soil compaction and controlled traffic considerations in ..., accessed July 30, 2025,
(PDF) Soil compaction and controlled traffic considerations in ..., accessed July 30, 2025,
Contextual Support

Ripping Mallee soils, what are the production benefits? - Agronomy Australia Proceedings, accessed August 28, 2025

View Source
Preview of (PDF) Soil Compaction and Root Growth: A Review - ResearchGate, accessed July 30, 2025,
(PDF) Soil Compaction and Root Growth: A Review - ResearchGate, accessed July 30, 2025,
Direct Evidence

(PDF) Soil Compaction and Root Growth: A Review - ResearchGate

View Source
Preview of 2025 Guide: Australian Forestry & Sustainable Farming Standards, accessed July 30, 2025,
2025 Guide: Australian Forestry & Sustainable Farming Standards, accessed July 30, 2025,
Contextual Support GreyLiterature

2025 Guide: Australian Forestry & Sustainable Farming Standards, accessed July 30, 2025,

View Source
Preview of Additional Information: Forestry and mining operations on the Tiwi Islands, accessed July 31, 2025
Additional Information: Forestry and mining operations on the Tiwi Islands, accessed July 31, 2025
Contextual Support Journal

Additional Information: Forestry and mining operations on the Tiwi Islands, accessed July 31, 2025,

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), accessed July 12, 2025,

View Source
Preview of Australia's Indian Ocean Islands, accessed July 30, 2025,
Australia's Indian Ocean Islands, accessed July 30, 2025,
Contextual Support GreyLiterature

Australia's Indian Ocean Islands, accessed July 30, 2025,

View Source
Preview of Category:Islands of the Northern Territory - Wikipedia, accessed July 30, 2025,
Category:Islands of the Northern Territory - Wikipedia, accessed July 30, 2025,
Contextual Support GreyLiterature

Category:Islands of the Northern Territory - Wikipedia, accessed July 30, 2025,

View Source
Preview of Cocos Keeling Islands - Australia's Last Unspoilt Paradise, accessed July 30, 2025,
Cocos Keeling Islands - Australia's Last Unspoilt Paradise, accessed July 30, 2025,
Contextual Support GreyLiterature

Cocos Keeling Islands - Australia's Last Unspoilt Paradise, accessed July 30, 2025,

View Source
Preview of Effects of soil compaction on the growth and mortality of planted dipterocarp seedlings in a logged-over tropical rainforest in Sarawak, Malaysia | Request PDF - ResearchGate, accessed July 30, 2025,
Effects of soil compaction on the growth and mortality of planted dipterocarp seedlings in a logged-over tropical rainforest in Sarawak, Malaysia | Request PDF - ResearchGate, accessed July 30, 2025,
Contextual Support Journal

Effects of soil compaction on the growth and mortality of planted dipterocarp seedlings in a logged-over tropical rainforest in Sarawak, Malaysia | Request PDF - ResearchGate, accessed July 20, 2025

View Source
Preview of Explore Queensland Islands and Island Adventures, accessed July 30, 2025,
Explore Queensland Islands and Island Adventures, accessed July 30, 2025,
Contextual Support Irrelevant

Explore Queensland Islands and Island Adventures, accessed July 30, 2025,

View Source
Preview of Forestry | NT.GOV.AU, accessed August 1, 2025,
Forestry | NT.GOV.AU, accessed August 1, 2025,
Contextual Support

Forestry | NT.GOV.AU, accessed August 1, 2025,

View Source
Preview of GUIDE TO GROWING AND MANAGING FORESTS | Safe Work Australia, accessed July 30, 2025,
GUIDE TO GROWING AND MANAGING FORESTS | Safe Work Australia, accessed July 30, 2025,
Contextual Support Journal

GUIDE TO GROWING AND MANAGING FORESTS | Safe Work Australia, accessed July 30, 2025,

View Source
Preview of Impacts of Logging-Associated Compaction on Forest Soils: A Meta-Analysis - Frontiers, accessed July 30, 2025,
Impacts of Logging-Associated Compaction on Forest Soils: A Meta-Analysis - Frontiers, accessed July 30, 2025,
Contextual Support Meta Analysis Journal

Impacts of Logging-Associated Compaction on Forest Soils: A Meta-Analysis - Frontiers

View Source
Preview of Improved forest management - CSIRO, accessed July 12, 2025,
Improved forest management - CSIRO, accessed July 12, 2025,
Contextual Support Government

Ecosystem wicks: Woodland trees enhance water infiltration in a fragmented agricultural landscape in eastern Australia, accessed May 15, 2025,

View Source
Preview of INCREASED MECHANISATION AND SOIL DAMAGE IN FORESTS — A REVIEW - Scion Research, accessed July 30, 2025,
INCREASED MECHANISATION AND SOIL DAMAGE IN FORESTS — A REVIEW - Scion Research, accessed July 30, 2025,
Contextual Support Journal

INCREASED MECHANISATION AND SOIL DAMAGE IN FORESTS — A REVIEW - Scion Research, accessed July 30, 2025,

View Source
Preview of Incredible Great Barrier Reef Islands For Your Holiday - Visitor's Guide - Queensland, accessed July 30, 2025,
Incredible Great Barrier Reef Islands For Your Holiday - Visitor's Guide - Queensland, accessed July 30, 2025,
Contextual Support

Incredible Great Barrier Reef Islands For Your Holiday - Visitor's Guide - Queensland, accessed August 2, 2025,

View Source
Preview of Interim Biogeographic Regionalisation for Australia - Wikipedia, accessed July 13, 2025,
Interim Biogeographic Regionalisation for Australia - Wikipedia, accessed July 13, 2025,
Contextual Support GreyLiterature

Category:IBRA regions - Wikipedia, accessed August 1, 2025

View Source
Preview of Interim Biogeographic Regionalisation for Australia (IBRA), Version 7 (Subregions), accessed July 30, 2025,
Interim Biogeographic Regionalisation for Australia (IBRA), Version 7 (Subregions), accessed July 30, 2025,
Contextual Support GreyLiterature

Interim Biogeographic Regionalisation for Australia (IBRA), Version 7 (Subregions), accessed July 30, 2025,

View Source
Preview of List of ecoregions in Australia Facts for Kids - Kids encyclopedia facts, accessed July 30, 2025,
List of ecoregions in Australia Facts for Kids - Kids encyclopedia facts, accessed July 30, 2025,
Contextual Support GreyLiterature

List of ecoregions in Australia Facts for Kids - Kids encyclopedia facts, accessed July 30, 2025,

View Source
Preview of Projects — Tiwi Plantations, accessed July 30, 2025,
Projects — Tiwi Plantations, accessed July 30, 2025,
Contextual Support GreyLiterature

Projects — Tiwi Plantations, accessed July 30, 2025,

View Source
Preview of RELATIONSHIPS BETWEEN CONE PENETRATION RESISTANCE, BULK DENSITY, AND MOISTURE CONTENT IN UNCULTIVATED, REPACKED, AND CULTIVATED, accessed July 30, 2025,
RELATIONSHIPS BETWEEN CONE PENETRATION RESISTANCE, BULK DENSITY, AND MOISTURE CONTENT IN UNCULTIVATED, REPACKED, AND CULTIVATED, accessed July 30, 2025,
Contextual Support Methodology Source Journal

Relationships between cone penetration resistance, bulk density, and moisture content in uncultivated, repacked, and cultivated hardsetting and non-hardsetting soils from the coastal lowlands of south-east Queensland, Australia

View Source
Preview of Research and development investment delivering for Tiwi community, accessed July 30, 2025,
Research and development investment delivering for Tiwi community, accessed July 30, 2025,
Contextual Support GreyLiterature

Research and development investment delivering for Tiwi community, accessed July 30, 2025,

View Source
Preview of Resistance and resilience of the forest soil microbiome to logging-associated compaction, accessed July 30, 2025,
Resistance and resilience of the forest soil microbiome to logging-associated compaction, accessed July 30, 2025,
Contextual Support Journal

Use Our: Soil Penetrometer - onondaga county soil & water conservation district, accessed August 2, 2025

View Source
Preview of Soil compaction - practical considerations - Forest Research, accessed July 30, 2025,
Soil compaction - practical considerations - Forest Research, accessed July 30, 2025,
Contextual Support Government

Soil on the Edge: Australia's Soil Health Crisis - Environmental Clean Technologies, accessed August 2, 2025

View Source
Preview of Soil compaction | UMN Extension, accessed July 30, 2025,
Soil compaction | UMN Extension, accessed July 30, 2025,
Contextual Support Government

Soil compaction | UMN Extension, accessed July 22, 2025,

View Source
Preview of Soil management guides - NSW Department of Primary Industries, accessed July 30, 2025,
Soil management guides - NSW Department of Primary Industries, accessed July 30, 2025,
Contextual Support Government

Managing soils during and after drought in cropping systems - Fact sheet - Soil CRC

View Source
Preview of Sustainable Forest Management, accessed July 30, 2025,
Sustainable Forest Management, accessed July 30, 2025,
Contextual Support GreyLiterature

Australia's Voluntary National Contribution to the United Nations Global Forest Goals – 2 April 2019

View Source
Preview of The Secretary - Parliament of Australia, accessed July 30, 2025,
The Secretary - Parliament of Australia, accessed July 30, 2025,
Contextual Support Journal

The Secretary - Parliament of Australia, accessed July 30, 2025

View Source
Preview of These 21 Beautiful Tropical Islands Are Closer Than You Think | Travel Insider - Qantas, accessed August 3, 2025
These 21 Beautiful Tropical Islands Are Closer Than You Think | Travel Insider - Qantas, accessed August 3, 2025
Contextual Support

These 21 Beautiful Tropical Islands Are Closer Than You Think | Travel Insider - Qantas, accessed July 30, 2025

View Source
Preview of Tiwi Islands Tours & Travel Guide | AAT Kings US, accessed July 30, 2025,
Tiwi Islands Tours & Travel Guide | AAT Kings US, accessed July 30, 2025,
Contextual Support GreyLiterature

Tiwi Islands Tours & Travel Guide | AAT Kings US, accessed July 30, 2025,

View Source
Preview of Tiwi-led Forestry Project to Boost Estate and Double Exports - Wood Central, accessed July 30, 2025,
Tiwi-led Forestry Project to Boost Estate and Double Exports - Wood Central, accessed July 30, 2025,
Contextual Support GreyLiterature

Tiwi-led Forestry Project to Boost Estate and Double Exports - Wood Central, accessed July 30, 2025,

View Source

Context

  • Region Australia
  • Biome Tropical & Subtropical Maritime Islands
  • Land Use Production Forestry
  • Assessment Pristine Reference
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 15 Mar 2026

Notes

ConsistencyResolver applied 2026-03-23 00:16 UTC: BenchmarkValue 2000 → 1300 (check: MinAboveMax, rationale: Swapping the MinimumOnly benchmark's value to 1300 kPa aligns with the lower degradation threshold indicated by the Brazilian study, resolving the MinAboveMax contradiction.)

Related Benchmarks

Other benchmarks in the AUS-TMI-FOR-SSC family.

2000 kPa Moderate
Production Forestry · Pristine Reference
UpperThreshold Active v1