Basal Area — Benchmark Detail - Nature Index

Benchmark Value

No specific value — see range

Range: 12 to 16 m²/ha

Optimal Range: 12 to 16

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 15 benchmarks together — the OptimalRange form drives the primary score, while 14 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

This value is situated within an optimal functional range of 12–16 m²/ha.

Metric Definition:

Basal area, defined as the sum of the cross-sectional area of tree trunks at breast height (1.3 m) per unit of land (expressed as m²/ha)

Benchmark Definition:

The optimal functional range for basal area in production woodlands.

Justification:

This range balances productivity with ecological resilience, allowing for healthy tree growth and a diverse understorey.

Sources (1)

Preview of The effect of thinning on structural attributes of a low rainfall forest in eastern Australia

The effect of thinning on structural attributes of a low rainfall forest in eastern Australia

Supporting Sources (53)

Additional references from the underlying research that informed this benchmark.

Preview of (PDF) Planning and monitoring forest sustainability: An Australian perspective, accessed July 12, 2025,

(PDF) Planning and monitoring forest sustainability: An Australian perspective, accessed July 12, 2025,

Contextual Support Journal

Sustainable Forestry – Protecting Australia's Forest Dwelling Wildlife, accessed July 12, 2025

Preview of A report on silvicultural guidelines for the 2024- 2033 Forest Management Plan to the Western Australian Department of Biodiversity, Conservation and, accessed July 12, 2025,

A report on silvicultural guidelines for the 2024- 2033 Forest Management Plan to the Western Australian Department of Biodiversity, Conservation and, accessed July 12, 2025,

Contextual Support Journal

Ecological Thinning Information and Workbook - AWS

Preview of AUSTRALASIAN Temperate Dry Sclerophyll Forest & Woodlands (south-eastern), accessed July 12, 2025,

AUSTRALASIAN Temperate Dry Sclerophyll Forest & Woodlands (south-eastern), accessed July 12, 2025,

Contextual Support GreyLiterature

East Australian Mediterranean Woodlands & Temperate Savannas (AU4) - One Earth, accessed July 12, 2025

Preview of Australia's forests - DAFF, accessed July 12, 2025,

Australia's forests - DAFF, accessed July 12, 2025,

Contextual Support Government

Woodlands of Australia - A biography of the Australian continent, accessed July 12, 2025

Preview of Australia's forests – overview - DAFF, accessed August 5, 2025,

Australia's forests – overview - DAFF, accessed August 5, 2025,

Contextual Support Government

Eastern Australian Temperate Forests | One Earth, accessed April 29, 2025,

Preview of Australia's forests and forestry glossary, accessed July 12, 2025,

Australia's forests and forestry glossary, accessed July 12, 2025,

Contextual Support Journal

Baw Baw Shire Council Draft – Version 1.1 October 2019, accessed April 6, 2026

Preview of Australia's Framework of Criteria and Indicators - DAFF, accessed July 12, 2025,

Australia's Framework of Criteria and Indicators - DAFF, accessed July 12, 2025,

Contextual Support Journal

Australia's Framework of Criteria and Indicators - DAFF, accessed July 30, 2025,

Preview of Australia's Sustainable Forest Management - DAFF, accessed July 12, 2025,

Australia's Sustainable Forest Management - DAFF, accessed July 12, 2025,

Contextual Support

Sustainable forest management: the Australian context - DAFF

Preview of Australian flora | EBSCO Research Starters, accessed July 12, 2025,

Australian flora | EBSCO Research Starters, accessed July 12, 2025,

Contextual Support GreyLiterature

Australia's forests – overview - DAFF, accessed July 12, 2025

Preview of Biodiversity Conservation Trust Ecological Thinning Guidelines, accessed July 12, 2025,

Biodiversity Conservation Trust Ecological Thinning Guidelines, accessed July 12, 2025,

Contextual Support

Estimating the relative magnitude of expected increases in soil ...

Preview of Biodiversity Conservation Trust Guidelines for Ecological Thinning, accessed July 12, 2025,

Biodiversity Conservation Trust Guidelines for Ecological Thinning, accessed July 12, 2025,

Contextual Support

Critical Ecological Roles, Structural Attributes and ... - Frontiers

Preview of Box Ironbark Forests - Victoria's Forestry Heritage, accessed July 12, 2025,

Box Ironbark Forests - Victoria's Forestry Heritage, accessed July 12, 2025,

Contextual Support GreyLiterature

Box-Ironbark Forests & Woodlands Investigation - Mount Alexander Shire Council, accessed July 12, 2025

Preview of box-ironbark | Christopher Jones' Research, accessed July 12, 2025,

box-ironbark | Christopher Jones' Research, accessed July 12, 2025,

Contextual Support GreyLiterature

Ecological impacts of firewood collection, accessed July 12, 2025

Preview of Box-Ironbark Ecological Thinning Trial Field Guide: Documentation of Methods and Monitoring Framework - ResearchGate, accessed July 12, 2025,

Box-Ironbark Ecological Thinning Trial Field Guide: Documentation of Methods and Monitoring Framework - ResearchGate, accessed July 12, 2025,

Direct Evidence Methodology Source Government

Native Forests Show Resilience to Selective Timber Harvesting in Southeast Queensland, Australia - Frontiers, accessed July 12, 2025

Preview of Box-Ironbark Forests & Woodlands Investigation - Mount Alexander Shire Council, accessed July 12, 2025,

Box-Ironbark Forests & Woodlands Investigation - Mount Alexander Shire Council, accessed July 12, 2025,

Contextual Support Journal

Box-Ironbark Forests & Woodlands Investigation - Mount Alexander Shire Council, accessed July 12, 2025,

Preview of Can ecological thinning deliver conservation outcomes in high-density river red gum forests? Establishing an adaptive management experiment - ResearchGate, accessed July 12, 2025,

Can ecological thinning deliver conservation outcomes in high-density river red gum forests? Establishing an adaptive management experiment - ResearchGate, accessed July 12, 2025,

Contextual Support Journal

Riverina River red gum reserves in NSW and Victoria - ResearchGate, accessed July 15, 2025

Preview of Competition and Density in Woodland Stands | OSU Extension Service, accessed July 12, 2025,

Competition and Density in Woodland Stands | OSU Extension Service, accessed July 12, 2025,

Contextual Support GreyLiterature

Forest and woodland stand structural complexity: Its definition and measurement, accessed July 12, 2025

Preview of Did early logging or changes in disturbance regimes promote high tree densities in river red gum forests? - CSIRO PUBLISHING | Australian Journal of Botany, accessed July 12, 2025,

Did early logging or changes in disturbance regimes promote high tree densities in river red gum forests? - CSIRO PUBLISHING | Australian Journal of Botany, accessed July 12, 2025,

Contextual Support Direct Evidence Journal

Did early logging or changes in disturbance regimes promote high tree densities in river red gum forests? - CSIRO PUBLISHING | Australian Journal of Botany, accessed July 19, 2025

Preview of Ecological FirE ManagEMEnt guidElinEs - Department for Environment and Water, accessed July 12, 2025,

Ecological FirE ManagEMEnt guidElinEs - Department for Environment and Water, accessed July 12, 2025,

Contextual Support Journal

Ecological FirE ManagEMEnt guidElinEs - Department for Environment and Water, accessed July 12, 2025

Preview of Ecological Thinning Trial in New South Wales and Victorian River Red Gum Forests - Environment and Heritage, accessed July 12, 2025,

Ecological Thinning Trial in New South Wales and Victorian River Red Gum Forests - Environment and Heritage, accessed July 12, 2025,

Contextual Support

Ecological Thinning Trial in New South Wales and Victorian River Red Gum Forests - Environment and Heritage, accessed July 19, 2025

Preview of Eucalypt woodland in Australia - Food and Agriculture Organization of the United Nations, accessed July 12, 2025,

Eucalypt woodland in Australia - Food and Agriculture Organization of the United Nations, accessed July 12, 2025,

Contextual Support Journal

AUSTRALASIAN Temperate Dry Sclerophyll Forest & Woodlands (south-eastern), accessed July 12, 2025

Preview of Eucalypt woodlands Regrowth Benefits - Management Guideline - Queensland Government, accessed July 12, 2025,

Eucalypt woodlands Regrowth Benefits - Management Guideline - Queensland Government, accessed July 12, 2025,

Contextual Support Journal

Australia's forests – overview - DAFF, accessed April 29, 2025,

Preview of Forest and woodland stand structural complexity: Its definition and measurement, accessed July 12, 2025,

Forest and woodland stand structural complexity: Its definition and measurement, accessed July 12, 2025,

Methodology Source Journal

Estimating stand basal area

Preview of Forest and woodland structure as an index of biodiversity: a review - CiteSeerX, accessed August 10, 2025,

Forest and woodland structure as an index of biodiversity: a review - CiteSeerX, accessed August 10, 2025,

Contextual Support

Forest and woodland stand structural complexity: Its definition ...

Preview of Forest Management Options for Private Landowners, accessed July 12, 2025,

Forest Management Options for Private Landowners, accessed July 12, 2025,

Contextual Support GreyLiterature

Forest Management Plan | Department of Biodiversity, Conservation and Attractions

Preview of Full article: Active management: a definition and considerations for implementation in forests of temperate Australia - Taylor & Francis Online, accessed July 12, 2025,

Full article: Active management: a definition and considerations for implementation in forests of temperate Australia - Taylor & Francis Online, accessed July 12, 2025,

Contextual Support Journal

National Recovery Plan for White Box–Yellow Box–Blakely's Red ..., accessed May 15, 2025

Preview of Growth and carbon stock change in eucalypt woodlands in northeast Australia: Ecological and greenhouse sink implications | Request PDF - ResearchGate, accessed July 12, 2025,

Growth and carbon stock change in eucalypt woodlands in northeast Australia: Ecological and greenhouse sink implications | Request PDF - ResearchGate, accessed July 12, 2025,

Contextual Support Direct Evidence Journal

The effect of thinning on structural attributes of a low rainfall forest in eastern Australia, accessed July 12, 2025

Preview of Little left to lose: deforestation and forest degradation in Australia since European colonization | Journal of Plant Ecology | Oxford Academic, accessed July 12, 2025,

Little left to lose: deforestation and forest degradation in Australia since European colonization | Journal of Plant Ecology | Oxford Academic, accessed July 12, 2025,

Contextual Support Journal

Little left to lose: deforestation and forest degradation in Australia since European colonization | Journal of Plant Ecology | Oxford Academic

Preview of management of inland arid and semi-arid woodland ... - DBCA Library, accessed July 12, 2025,

management of inland arid and semi-arid woodland ... - DBCA Library, accessed July 12, 2025,

Contextual Support Journal

management of inland arid and semi-arid woodland ... - DBCA Library

Preview of Native Forests Show Resilience to Selective Timber Harvesting in Southeast Queensland, Australia - Frontiers, accessed July 12, 2025,

Native Forests Show Resilience to Selective Timber Harvesting in Southeast Queensland, Australia - Frontiers, accessed July 12, 2025,

Contextual Support Journal

The Secret Woodlands That Safeguard Australia's Threatened Birds | The Pew Charitable Trusts

Preview of Overview - new arrangements for private native forestry, accessed July 12, 2025,

Overview - new arrangements for private native forestry, accessed July 12, 2025,

Regulatory Framework Journal

Stand basal area, accessed July 12, 2025

Preview of PARKS VICTORIA TECHNICAL SERIES - AWS, accessed July 12, 2025,

PARKS VICTORIA TECHNICAL SERIES - AWS, accessed July 12, 2025,

Contextual Support Journal

Litter accumulation and fire risks show direct and indirect climate-dependence at continental scale - PubMed Central, accessed May 15, 2025

Preview of Partitioning of evapotranspiration in a semi-arid eucalypt woodland in south-western Australia - ResearchGate, accessed July 12, 2025,

Partitioning of evapotranspiration in a semi-arid eucalypt woodland in south-western Australia - ResearchGate, accessed July 12, 2025,

Contextual Support Direct Evidence

Semi-arid woodlands (shrubby sub-formation) | NSW Environment, Energy and Science, accessed July 12, 2025

Preview of Picture goes here (in Header and Footer) Ecological impacts of firewood collection, accessed July 12, 2025,

Picture goes here (in Header and Footer) Ecological impacts of firewood collection, accessed July 12, 2025,

Contextual Support Journal

Does thinning regrowth restore habitat for biodiversity? - NSW Department of Primary Industries, accessed July 15, 2025,

Preview of Private Native Forestry - Amazon S3, accessed July 12, 2025,

Private Native Forestry - Amazon S3, accessed July 12, 2025,

Contextual Support Regulatory Framework Journal

Private Native Forestry - Amazon S3, accessed July 12, 2025,

Preview of Private Native Forestry Code of Practice for Northern NSW | AustLII, accessed August 10, 2025,

Private Native Forestry Code of Practice for Northern NSW | AustLII, accessed August 10, 2025,

Regulatory Framework Journal

Private Native Forestry Code of Practice for Northern NSW | AustLII, accessed July 12, 2025

Preview of Rainfall, land use and woody vegetation cover change in semi-arid Australian savanna - College of Agriculture, Life & Environmental Sciences, accessed July 12, 2025,

Rainfall, land use and woody vegetation cover change in semi-arid Australian savanna - College of Agriculture, Life & Environmental Sciences, accessed July 12, 2025,

Contextual Support Journal

Biodiversity Conservation Trust Guidelines for Ecological Thinning, accessed July 12, 2025

Preview of Recruitment, mortality and growth in semi‐arid conifer‐eucalypt forest: Small trees insure against fire and drought - PubMed Central, accessed July 12, 2025,

Recruitment, mortality and growth in semi‐arid conifer‐eucalypt forest: Small trees insure against fire and drought - PubMed Central, accessed July 12, 2025,

Contextual Support Direct Evidence Journal

Recruitment, mortality and growth in semi‐arid conifer‐eucalypt forest: Small trees insure against fire and drought - PMC, accessed April 1, 2026,

Preview of Review of 2022 Private Native Forestry Code of Practice for Northern NSW - NationBuilder, accessed July 12, 2025,

Review of 2022 Private Native Forestry Code of Practice for Northern NSW - NationBuilder, accessed July 12, 2025,

Regulatory Framework Journal

Review of 2022 Private Native Forestry Code of Practice for Northern NSW - NationBuilder

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

Preview of Stand basal area, accessed July 12, 2025,

Stand basal area, accessed July 12, 2025,

Contextual Support Methodology Source

Vegetation and floristics of a lowland tropical rainforest in northeast Australia - Biodiversity Data Journal

Preview of Structural overshoot of tree growth with climate variability and the global spectrum of drought-induced forest dieback - Alistair S. Jump, accessed July 12, 2025,

Structural overshoot of tree growth with climate variability and the global spectrum of drought-induced forest dieback - Alistair S. Jump, accessed July 12, 2025,

Contextual Support

Rainfall, land use and woody vegetation cover change in semi-arid Australian savanna - College of Agriculture, Life & Environmental Sciences, accessed July 12, 2025

Preview of Sustainable Forestry – Protecting Australia's Forest Dwelling Wildlife, accessed July 12, 2025,

Sustainable Forestry – Protecting Australia's Forest Dwelling Wildlife, accessed July 12, 2025,

Contextual Support GreyLiterature

SFI 2015-2019 STANDARDS AND RULES - Sustainable Forestry Initiative, accessed on May 27, 2025

Preview of Sustainable native forest management, accessed July 12, 2025,

Sustainable native forest management, accessed July 12, 2025,

Contextual Support Journal

(PDF) Sustainable harvesting of tropical rainforests: Reply to Keto ..., accessed July 20, 2025

Preview of Temperate Eucalypt Woodlands in Australia: Biology, Conservation, Management and Restoration - ResearchGate, accessed July 12, 2025,

Temperate Eucalypt Woodlands in Australia: Biology, Conservation, Management and Restoration - ResearchGate, accessed July 12, 2025,

Contextual Support GreyLiterature

Temperate Eucalypt Woodlands in Australia: Biology, Conservation, Management and Restoration - ResearchGate, accessed July 12, 2025

Preview of The effect of thinning on structural attributes of a low rainfall forest in eastern Australia, accessed July 12, 2025,

The effect of thinning on structural attributes of a low rainfall forest in eastern Australia, accessed July 12, 2025,

Direct Evidence Journal

PARKS VICTORIA TECHNICAL SERIES - AWS, accessed July 12, 2025

Preview of Thinning - Agroforestry in Australia, accessed July 12, 2025,

Thinning - Agroforestry in Australia, accessed July 12, 2025,

Contextual Support Journal

Thinning - Agroforestry in Australia, accessed July 20, 2025

Preview of THINNING OF NATIVE FOREST - Forestry Australia, accessed July 12, 2025,

THINNING OF NATIVE FOREST - Forestry Australia, accessed July 12, 2025,

Contextual Support Journal

THINNING OF NATIVE FOREST - Forestry Australia, accessed July 31, 2025

Preview of Thinning Regrowth Eucalypts - NET, accessed July 12, 2025,

Thinning Regrowth Eucalypts - NET, accessed July 12, 2025,

Contextual Support Journal

Forest Management Options for Private Landowners, accessed July 12, 2025

Preview of Top 6 Sustainable Forest Management Techniques, accessed July 12, 2025,

Top 6 Sustainable Forest Management Techniques, accessed July 12, 2025,

Contextual Support GreyLiterature

Sustainable native forest management, accessed July 12, 2025

Preview of Woodlands - DCCEEW, accessed August 5, 2025,

Woodlands - DCCEEW, accessed August 5, 2025,

Contextual Support Government

Woodlands - DCCEEW, accessed August 4, 2025,

Preview of Woodlands and woody debris: Understanding structure and composition to inform restoration - PubMed, accessed July 12, 2025,

Woodlands and woody debris: Understanding structure and composition to inform restoration - PubMed, accessed July 12, 2025,

Contextual Support Journal

A report on silvicultural guidelines for the 2024- 2033 Forest Management Plan to the Western Australian Department of Biodiversity, Conservation and, accessed July 12, 2025

Preview of Woodlands of Australia - A biography of the Australian continent, accessed July 12, 2025,

Woodlands of Australia - A biography of the Australian continent, accessed July 12, 2025,

Contextual Support GreyLiterature

Australia's forests – overview - DAFF, accessed July 12, 2025

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 28 May 2026

Notes

Lower Critical Threshold: null. Upper Detrimental Threshold: null. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

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