Soil Structure & Compaction

AUS-TSW-FOR-SSC General Moderate confidence

Benchmark Value

No specific value — see range

Range: 0 to 1500 kPa

Optimal Range: 0 to 1500

Direction: Lower is desirable ↓

Form: OptimalRange

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

Evidence & Context

Functional Thresholds: The optimal range for root growth is <1,500 kPa. Compaction becomes constraining above 1,500 kPa, and severely restrictive (degraded) above a critical threshold of ~2,500−3,000 kPa.

Metric Definition:

Penetration resistance range indicating functional zones of soil compaction affecting root growth and ecosystem function.

Benchmark Definition:

Optimal functional range of soil penetration resistance supporting healthy root growth and ecosystem function in temperate semi-arid shrublands and open woodlands under production forestry.

Justification:

Based on scientific consensus and field measurements indicating root growth is unimpeded below 1,500 kPa.

Sources (1)

Soil Compaction and Productivity Evolution in a Harvested and Grazed Mediterranean Scots Pine (Pinus sylvestris L.) Forest Journal

Soil Compaction and Productivity Evolution in a Harvested and Grazed Mediterranean Scots Pine (Pinus sylvestris L.) Forest

View Source

Supporting Sources (6)

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

Australia's State of the Forests Report Synthesis 2023

View Source

Healthy Roots and Healthy Trees - 2.926 - CSU Extension - Colorado State University

Irrelevant

Healthy Roots and Healthy Trees - 2.926 - CSU Extension - Colorado State University

View Source

Impacts of Logging-Associated Compaction on Forest Soils: A Meta-Analysis - Frontiers, accessed July 11, 2025,

Contextual Support Journal

Impacts of Logging-Associated Compaction on Forest Soils: A Meta-Analysis - Frontiers, accessed July 19, 2025

View Source

National Soil Monitoring Program - CSIRO, accessed August 4, 2025,

Contextual Support GreyLiterature

National Soil Monitoring Program - CSIRO, accessed July 8, 2025

View Source

Preview of Soil Compaction and Productivity Evolution in a Harvested and Grazed Mediterranean Scots Pine (Pinus sylvestris L.) Forest - Universitat Politècnica de Madrid - Portal Científico UPM, accessed July 11, 2025,

Soil Compaction and Productivity Evolution in a Harvested and Grazed Mediterranean Scots Pine (Pinus sylvestris L.) Forest - Universitat Politècnica de Madrid - Portal Científico UPM, accessed July 11, 2025,

Contextual Support Journal

View Source

Tree Root Growth Requirements - Arborcare Tree and Garden ...

Contextual Support Journal

Tree Root Growth Requirements - Arborcare Tree and Garden ...

View Source

Context

Region Australia
Biome Temperate Semi-Arid Shrublands & Open Woodlands
Land Use Production Forestry
Assessment Not Stated
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

The optimal range represents the best available condition achievable under production forestry, with values below 1,500 kPa indicating minimal physiological stress on trees and efficient water and nutrient uptake. No upper detrimental threshold — higher values are always worse. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

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