Basal Area

AUS-AKW-LVG-BAS General Moderate confidence

Benchmark Value

No specific value — see range
Range: 2 to 8 m²/ha
Optimal Range: 2 to 8
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 18 benchmarks together — the OptimalRange form drives the primary score, while 17 guard(s) constrain the result.

Evidence & Context

The optimal functional range for co-beneficial outcomes is estimated to be 2-8 m²/ha.

Metric Definition:

Basal area (BA) is a standard forestry metric that quantifies stand density by summing the cross-sectional area of tree stems at a standardized height (typically 1.3 m) over a given area, expressed as square metres per hectare (m²/ha).

Benchmark Definition:

This benchmark defines the optimal basal area range balancing ecosystem function and grazing productivity in the Arid Karstic Woodlands & Shrublands under livestock grazing.

Justification:

Synthesized from lower and upper thresholds to represent a balanced, resilient system.

Sources (1)

Preview of The Rangeland Journal - CSIRO PUBLISHING, accessed May 13, 2025,
The Rangeland Journal - CSIRO PUBLISHING, accessed May 13, 2025, Journal

Grazing exclusion has nuanced effects on woody carbon stocks across Australian rangelands

View Source

Supporting Sources (4)

Additional references from the underlying research that informed this benchmark.

Preview of A window of opportunity for climate-change adaptation: easing tree mortality by reducing forest basal area | Request PDF - ResearchGate
A window of opportunity for climate-change adaptation: easing tree mortality by reducing forest basal area | Request PDF - ResearchGate
Contextual Support Journal

A window of opportunity for climate-change adaptation: easing tree mortality by reducing forest basal area | Request PDF - ResearchGate

View Source
Preview of Maximizing retention of native biodiversity in Australian agricultural ...
Maximizing retention of native biodiversity in Australian agricultural ...
Contextual Support Journal

Does grazing exclusion in Australia's rangelands affect biomass and debris carbon stocks? - CSIRO Publishing, accessed April 29, 2025,

View Source
Preview of Method for Rangeland condition monitoring: shrubland - Government of Western Australia
Method for Rangeland condition monitoring: shrubland - Government of Western Australia
Contextual Support

Method for Rangeland condition monitoring: shrubland - Government of Western Australia

View Source
Preview of Thresholds of biodiversity and ecosystem function in a forest ecosystem undergoing dieback
Thresholds of biodiversity and ecosystem function in a forest ecosystem undergoing dieback
Contextual Support GreyLiterature

Thresholds of biodiversity and ecosystem function in a forest ecosystem undergoing dieback

View Source

Context

  • Region Australia
  • Biome Arid Karstic Woodlands & Shrublands
  • Land Use Livestock Grazing & Pasture
  • Assessment Not Stated
  • Evidence Type HealthyOperationalRange

Lifecycle

  • Status Active
  • Version 1
  • Effective From 8 Jun 2026

Notes

Range represents a balance between maintaining woody structure and avoiding pasture suppression and drought vulnerability. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.