Soil Structure & Compaction

AUS-TSR-CON-SSC General Moderate confidence

Benchmark Value

No specific value — see range

Range: 500 to 1500 kPa

Optimal Range: 500 to 1500

Direction: Higher is desirable ↑

Form: OptimalRange

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 6 benchmarks together — the OptimalRange form drives the primary score, while 5 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary MaximumOnly Guard MaximumOnly Guard MinimumOnly Guard MinimumOnly Guard MinimumOnly Guard

Evidence & Context

This synthesis leads to a proposed optimal range of approximately 500 kPa to 1500 kPa (when measured at field capacity).

Metric Definition:

Penetrometer resistance range measured at field capacity representing optimal soil compaction for ecosystem function.

Benchmark Definition:

Optimal range of penetrometer resistance for soil compaction balancing root anchorage and permeability.

Justification:

Range derived from synthesis of literature indicating balance between sufficient soil structure and low impedance for root growth.

Sources (1)

Preview of Australian Soils and Landscapes | Monitoring & Data | TERN - esoil.io, accessed July 30, 2025,

Australian Soils and Landscapes | Monitoring & Data | TERN - esoil.io, accessed July 30, 2025, Government

Australian Soils and Landscapes | Monitoring & Data | TERN - esoil.io, accessed July 17, 2025,

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Supporting Sources (4)

Additional references from the underlying research that informed this benchmark.

(PDF) How the Soil Resistance to Penetration Affects the Development of Agricultural Crops? - ResearchGate

Contextual Support Journal

(PDF) How the Soil Resistance to Penetration Affects the Development of Agricultural Crops? - ResearchGate

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Criteria and Indicators for Sustainable Forest Management in Victoria, accessed July 19, 2025

Direct Evidence Journal

Soil health: the foundation of sustainable agriculture - 2001 ...

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Early Response of Soil Properties and Function to Riparian ...

Direct Evidence Journal

Early Response of Soil Properties and Function to Riparian ...

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Safflower root and shoot growth affected by soil compaction - SciELO, accessed August 4, 2025,

Direct Evidence

Safflower root and shoot growth affected by soil ... - SciELO Brasil

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Context

Region Australia
Biome Tropical & Subtropical Rainforests
Land Use Conservation / Protected Natural Areas
Assessment Pristine Reference
Vegetation Forest
Evidence Type HealthyOperationalRange

Lifecycle

Status Active
Version 1
Effective From 21 Mar 2026

Notes

Range represents the 'sweet spot' for soil compaction in rainforest ecosystems.

Related Benchmarks

Other benchmarks in the AUS-TSR-CON-SSC family.