Soil Structure & Compaction

AUS-AKW-LVG-SSC General Moderate confidence

Benchmark Value

2500 kPa
Direction: Lower is desirable ↓
Form: MaximumOnly

Scoring Curve

This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context.

Evidence & Context

A penetrometer resistance exceeding 2,500 kPa (2.5 MPa) is identified as the critical threshold for significant ecological degradation.

Metric Definition:

Penetrometer resistance (PR) threshold beyond which root growth is severely restricted and ecological function is impaired.

Benchmark Definition:

Critical soil compaction threshold where penetrometer resistance above 2,500 kPa indicates severe restriction of root growth and ecological degradation in arid karstic woodlands under livestock grazing.

Justification:

At this level, root growth for most pasture species is severely restricted, water infiltration is drastically reduced, and a negative feedback loop of degradation is likely initiated.

Sources (1)

Preview of How Biodiversity-Friendly Is Regenerative Grazing? - Frontiers, accessed August 5, 2025,
How Biodiversity-Friendly Is Regenerative Grazing? - Frontiers, accessed August 5, 2025, Journal

The Science behind Regenerative Agriculture

View Source

Supporting Sources (28)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) PENETROMETERS TO DETERMINE THE RESISTANCE TO PENETRATION IN OXISOL IN PASTURE LAND IN THE CERRADO - ResearchGate, accessed July 24, 2025
(PDF) PENETROMETERS TO DETERMINE THE RESISTANCE TO PENETRATION IN OXISOL IN PASTURE LAND IN THE CERRADO - ResearchGate, accessed July 24, 2025
Contextual Support Journal

final report - MLA, accessed July 24, 2025

View Source
Preview of Add a heading - Great Barrier Reef Foundation, accessed July 24, 2025
Add a heading - Great Barrier Reef Foundation, accessed July 24, 2025
Contextual Support GreyLiterature

Add a heading - Great Barrier Reef Foundation, accessed July 24, 2025

View Source
Preview of Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed August 5, 2025,
Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed August 5, 2025,
Contextual Support Journal

How should we manage our soils to increase soil carbon?, accessed May 10, 2026

View Source
Preview of Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed July 24, 2025
Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed July 24, 2025
Contextual Support Journal

Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed July 24, 2025

View Source
Preview of Best Management Practices to Use on Karst and Silurian Soil - Crops and Soils, accessed July 23, 2025,
Best Management Practices to Use on Karst and Silurian Soil - Crops and Soils, accessed July 23, 2025,
Contextual Support Government

Australian Soil: Definition, Classification, Types and Quality - Access EP, accessed July 16, 2025,

View Source
Preview of Calcareous Soils Initiative - GRDC, accessed July 22, 2025,
Calcareous Soils Initiative - GRDC, accessed July 22, 2025,
Contextual Support Government

Some Characteristics of Calcareous soils. A review A.S. Taalab1, G.W. Ageeb2, Hanan S. Siam1 and Safaa A. Mahmoud1 - CURRENT RESEARCH WEB

View Source
Preview of Can simple, on-ground vegetation and soil measures reliably indicate the health of rangelands? An application in Australia's semi-arid woodlands - CSIRO Publishing, accessed July 30, 2025
Can simple, on-ground vegetation and soil measures reliably indicate the health of rangelands? An application in Australia's semi-arid woodlands - CSIRO Publishing, accessed July 30, 2025
Contextual Support Journal

The Rangeland Journal - CSIRO PUBLISHING, accessed July 10, 2025

View Source
Preview of Compaction | VRO - Victorian Resources Online, accessed August 4, 2025,
Compaction | VRO - Victorian Resources Online, accessed August 4, 2025,
Contextual Support

3- Build and maintain soil nutrients to improve soil fertility and health in all pasture zones

View Source
Preview of Compaction | VRO - Victorian Resources Online, accessed July 24, 2025
Compaction | VRO - Victorian Resources Online, accessed July 24, 2025
Contextual Support Journal

Compaction | VRO - Victorian Resources Online, accessed July 24, 2025

View Source
Preview of Do grazing intensity and herbivore type affect soil health? Insights from a semi-arid productivity gradient, accessed July 24, 2025
Do grazing intensity and herbivore type affect soil health? Insights from a semi-arid productivity gradient, accessed July 24, 2025
Contextual Support Journal

Soil acidification | .Meat & Livestock Australia

View Source
Preview of Effects of soil degradation on infiltration rates in grazed semiarid rangelands of northeastern Patagonia, Argentina - project bedrock
Effects of soil degradation on infiltration rates in grazed semiarid rangelands of northeastern Patagonia, Argentina - project bedrock
Contextual Support Journal

Landscape rehydration and regenerative agriculture improves soil health, accessed July 23, 2025

View Source
Preview of Final report - MLA, accessed July 19, 2025,
Final report - MLA, accessed July 19, 2025,
Contextual Support

Queensland Government guidelines for grazing lands

View Source
Preview of How do I manage the impact of compaction? - Soil Health Knowledgebase, accessed July 24, 2025
How do I manage the impact of compaction? - Soil Health Knowledgebase, accessed July 24, 2025
Contextual Support Journal

Grazing management to reduce soil damage - Agriculture Victoria

View Source
Preview of Managing, soil, pasture… - Kangaroo Island - Landscape SA, accessed July 24, 2025
Managing, soil, pasture… - Kangaroo Island - Landscape SA, accessed July 24, 2025
Contextual Support Government

Managing, soil, pasture… - Kangaroo Island - Landscape SA, accessed July 24, 2025

View Source
Preview of Potential Geoheritage Values of Landscapes in the Australian Drylands - DCCEEW, accessed July 23, 2025,
Potential Geoheritage Values of Landscapes in the Australian Drylands - DCCEEW, accessed July 23, 2025,
Contextual Support Journal

Wetlands | Environment, land and water | Queensland Government, accessed July 24, 2025

View Source
Preview of Progressive rehabilitation and closure plan schedule for P-PRCP-100812653 - NET, accessed July 18, 2025,
Progressive rehabilitation and closure plan schedule for P-PRCP-100812653 - NET, accessed July 18, 2025,
Contextual Support Journal

Ian Partridge - FutureBeef, accessed July 23, 2025

View Source
Preview of Protect your soil from compaction - NSW Department of Primary Industries, accessed August 4, 2025,
Protect your soil from compaction - NSW Department of Primary Industries, accessed August 4, 2025,
Contextual Support

Rangeland Soil Quality Compaction, accessed July 28, 2025

View Source
Preview of Rangelands Living Skin - Final report, accessed July 21, 2025,
Rangelands Living Skin - Final report, accessed July 21, 2025,
Contextual Support Journal

Inclusive Urban Greening - Sustainable Communities and Waste Hub

View Source
Preview of Restoration of degraded grazing country in the semi-arid areas of ..., accessed July 10, 2025,
Restoration of degraded grazing country in the semi-arid areas of ..., accessed July 10, 2025,
Contextual Support Journal

Maintain and improve groundcover - Local Land Services

View Source
Preview of Restoration of degraded grazing country in the semi-arid areas of NSW, accessed July 24, 2025
Restoration of degraded grazing country in the semi-arid areas of NSW, accessed July 24, 2025
Contextual Support GreyLiterature

GROWTH-LIMITING SOIL BULK DENSITIES AS INFLUENCED BY SOIL TEXTURE DEVELOPED BY RICHARD L. DADDOW AND GORDON E. WARRINGTON WSDG R, accessed July 27, 2025

View Source
Preview of Review: The effects of soil compaction on root penetration, pasture growth and persistence - Journal of New Zealand Grasslands, accessed July 24, 2025
Review: The effects of soil compaction on root penetration, pasture growth and persistence - Journal of New Zealand Grasslands, accessed July 24, 2025
Contextual Support Journal

Review: The effects of soil compaction on root penetration, pasture growth and persistence - Journal of New Zealand Grasslands, accessed July 24, 2025

View Source
Preview of Semi-arid woodlands (shrubby sub-formation) | NSW Environment, Energy and Science, accessed July 12, 2025, )
Semi-arid woodlands (shrubby sub-formation) | NSW Environment, Energy and Science, accessed July 12, 2025, )
Contextual Support Government

Semi-arid woodlands (grassy sub-formation) | NSW Environment, Energy and Science

View Source
Preview of SOIL CARBON EDITION - North Central Catchment Management Authority, accessed July 28, 2025,
SOIL CARBON EDITION - North Central Catchment Management Authority, accessed July 28, 2025,
Contextual Support Government

Soil Compaction - Tas | Fact Sheets | soilquality.org.au, accessed July 24, 2025

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
Contextual Support

Root Penetration Is Associated with Root Diameter and Root Growth ...

View Source
Preview of Soil Health Assessment Part IV: Soil Penetration Resistance and Plant Roots – Soil and Water Conservation Laboratory Manual - New Prairie Press Open Book Publishing, accessed August 11, 2025
Soil Health Assessment Part IV: Soil Penetration Resistance and Plant Roots – Soil and Water Conservation Laboratory Manual - New Prairie Press Open Book Publishing, accessed August 11, 2025
Contextual Support Journal

The Influence of Compaction and Soil Strength on the Establishment of Four Australian Landscape Trees | Request PDF - ResearchGate, accessed July 24, 2025

View Source
Preview of Soil Respiration Characteristics and Karst Carbon Sink Potential in Woodlands and Grasslands - MDPI, accessed July 24, 2025
Soil Respiration Characteristics and Karst Carbon Sink Potential in Woodlands and Grasslands - MDPI, accessed July 24, 2025
Contextual Support Journal

Soil Respiration Characteristics and Karst Carbon Sink Potential in Woodlands and Grasslands - MDPI, accessed July 24, 2025

View Source
Preview of Topic 14: Grazing Management - Woolwise - The Australian Wool Education Trust, accessed July 24, 2025
Topic 14: Grazing Management - Woolwise - The Australian Wool Education Trust, accessed July 24, 2025
Contextual Support Journal

Topic 14: Grazing Management - Woolwise - The Australian Wool Education Trust, accessed July 24, 2025

View Source
Preview of www.barrierreef.org, accessed on May 25, 2025,
www.barrierreef.org, accessed on May 25, 2025,
Contextual Support Journal

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

View Source

Context

  • Region Australia
  • Biome Arid Karstic Woodlands & Shrublands
  • Land Use Livestock Grazing & Pasture
  • Assessment Conservation Target
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 2
  • Effective From 7 Jun 2026

Notes

This threshold represents a transition to a dysfunctional ecological state, where the landscape's resilience and productivity are fundamentally compromised.

Related Benchmarks

Other benchmarks in the AUS-AKW-LVG-SSC family.

500 kPa Moderate
Livestock Grazing & Pasture ยท Conservation Target
MaximumOnly Active v1