Basal Area

AUS-TDG-AGR-BAS General Moderate confidence

Benchmark Value

5 m²/ha
Direction: Higher is desirable ↑
Form: MaximumOnly

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 19 benchmarks together — the OptimalRange form drives the primary score, while 18 guard(s) constrain the result.

Evidence & Context

A whole-farm Basal Area exceeding 5.0 - 7.0 m²/ha is proposed as the Upper Detrimental Threshold for this land use in this biome.

Metric Definition:

Basal Area as a measure of tree stand structure and function.

Benchmark Definition:

This benchmark marks the maximum Basal Area above which tree competition harms crop production in water-limited temperate agricultural systems.

Justification:

Competition for water and light becomes a dominant limiting factor above this threshold.

Sources (1)

Preview of THE PRACTICE OF AGROFORESTRY IN AUSTRALIA FE Batini+, GW Anderson*, and R. Moore0
THE PRACTICE OF AGROFORESTRY IN AUSTRALIA FE Batini+, GW Anderson*, and R. Moore0 Journal

THE PRACTICE OF AGROFORESTRY IN AUSTRALIA FE Batini+, GW Anderson*, and R. Moore0, accessed August 12, 2025

View Source

Supporting Sources (3)

Additional references from the underlying research that informed this benchmark.

Preview of Reversing a tree regeneration crisis in an endangered ecoregion - PNAS
Reversing a tree regeneration crisis in an endangered ecoregion - PNAS
Contextual Support Journal

Reversing a tree regeneration crisis in an endangered ecoregion - PNAS, accessed August 12, 2025

View Source
Preview of Reversing a tree regeneration crisis in an endangered ecoregion - ResearchGate, accessed August 12, 2025
Reversing a tree regeneration crisis in an endangered ecoregion - ResearchGate, accessed August 12, 2025
Contextual Support Journal

Reversing a tree regeneration crisis in an endangered ecoregion - ResearchGate, accessed August 12, 2025

View Source
Preview of Shelterbelts | MP Landcare, accessed August 12, 2025
Shelterbelts | MP Landcare, accessed August 12, 2025
Contextual Support

Shelterbelts | MP Landcare, accessed August 12, 2025

View Source

Context

  • Region Australia
  • Biome Temperate Dry Woodlands & Native Grasslands
  • Land Use Agricultural Crop Production
  • Assessment Not Stated
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 7 Jun 2026

Notes

Represents the point where the system ceases to be a productive integrated agro-ecosystem. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.