Ground Cover - Tree Canopy

AUS-TSR-FOR-TCC General Moderate confidence

Benchmark Value

No specific value — see range

Range: 60 to 70 %

Thresholds: Lower: 40, Upper: 80

Optimal Range: 60 to 70

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 9 benchmarks together — the OptimalRange form drives the primary score, while 8 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

This report establishes a scientifically defensible reference benchmark for Tree Canopy Cover within production forestry systems in Australia's Tropical and Subtropical Rainforests biome.

Metric Definition:

Tree Canopy Cover within production forestry systems in Australia's Tropical and Subtropical Rainforests biome

Benchmark Definition:

A benchmark representing a state of high environmental health achievable under best-practice sustainable management in production forestry within Australia's Tropical and Subtropical Rainforests.

Justification:

The benchmark is derived from a long-term study identifying a moderate harvesting intensity (47% basal area removal) as ecologically sustainable in Australian subtropical rainforests, representing a 'best-on-offer' condition.

Sources (1)

Preview of Modelling growth, recruitments and mortality to describe and simulate dynamics of subtropical rainforests following different levels of disturbance

Modelling growth, recruitments and mortality to describe and simulate dynamics of subtropical rainforests following different levels of disturbance

View Source

Supporting Sources (10)

Additional references from the underlying research that informed this benchmark.

Australia's State of the Forests Report - 2013 - DAFF, accessed July 20, 2025

Contextual Support Journal

Australia's State of the Forests Report - 2013 - DAFF, accessed July 20, 2025

View Source

AUSTRALIA'S STATE OF THE FORESTS REPORT - DAFF, accessed July 12, 2025,

Regulatory Framework Journal

The Influence of Compaction and Soil Strength on the Establishment of Four Australian Landscape Trees | Arboriculture & Urban Forestry, accessed May 15, 2025

View Source

AUSTRALIA'S STATE OF THE FORESTS REPORT - DAFF, accessed July 20, 2025

Contextual Support Journal

(PDF) Modelling growth, recruitments and mortality to describe and simulate dynamics of subtropical rainforests following different levels of disturbance - ResearchGate, accessed July 20, 2025

View Source

ecosystem services in a forest landscape facing significant changes Eleanor Rosemary Tew - CORE, accessed July 20, 2025

Contextual Support

ecosystem services in a forest landscape facing significant changes Eleanor Rosemary Tew - CORE, accessed July 20, 2025

View Source

Preview of Full article: Estimating the extent of selective timber harvesting in private native eucalypt forests with multi-temporal lidar - Taylor and Francis, accessed July 20, 2025

Full article: Estimating the extent of selective timber harvesting in private native eucalypt forests with multi-temporal lidar - Taylor and Francis, accessed July 20, 2025

Methodology Source Journal

sustainable native forest management - Queensland Government publications, accessed July 20, 2025

View Source

Indicators of Rainforest Recovery from Disturbance - Preprints.org, accessed July 20, 2025

Contextual Support Journal

Australia's native forests and wood production - DAFF

View Source

Land | State of the Environment Report 2011, accessed August 10, 2025,

Contextual Support Journal

Regenerative Land Management | HEALTHY SOILS AUSTRALIA, accessed May 11, 2025

View Source

Land | State of the Environment Report 2011, accessed July 20, 2025

Contextual Support Journal

Land | State of the Environment Report 2011, accessed July 20, 2025

View Source

Preview of Regeneration changes in tree species abundance diversity and structure in logged and unlogged subtropical rainforest over a 36-y - CiteSeerX, accessed July 20, 2025

Regeneration changes in tree species abundance diversity and structure in logged and unlogged subtropical rainforest over a 36-y - CiteSeerX, accessed July 20, 2025

Contextual Support

Earth Observation: Data, Processing and Applications Volume 2C, accessed July 20, 2025

View Source

The Long-Term Survival and Growth of Enrichment Plantings in ..., accessed July 17, 2025,

Contextual Support Journal

Reforestation in the Tropics and Subtropics of Australia, accessed July 20, 2025

View Source

Context

Region Australia
Biome Tropical & Subtropical Rainforests
Land Use Production Forestry
Assessment Pristine Reference
Evidence Type TargetCondition

Lifecycle

Status Active
Version 1
Effective From 24 Mar 2026

Notes

Lower Critical Threshold: 40 %. Upper Detrimental Threshold: 80 %. Optimal Range: 55-75 %. Lower canopy cover below 40% is linked to intensive logging compromising ecological integrity; canopy cover above 80% may suppress regeneration needed for sustainable timber production. [Migration] Original wider evidence range: 55 – 75 (retained OptimalRange: 60 – 70)

Related Benchmarks

Other benchmarks in the AUS-TSR-FOR-TCC family.