Basal Area

AUS-TSW-AGR-BAS General Moderate confidence

Benchmark Value

No specific value — see range
Range: 4 to 8 m²/ha
Optimal Range: 4 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 11 benchmarks together — the OptimalRange form drives the primary score, while 10 guard(s) constrain the result.

Evidence & Context

The 4–8 m²/ha range reflects observed values in functional, well-managed semi-arid agroforestry systems and represents a balance between ecological health and sustainable production.

Metric Definition:

Basal area of trees in m²/ha within agricultural crop production systems in temperate semi-arid woodlands.

Benchmark Definition:

This benchmark represents the basal area of tree stems per hectare in temperate semi-arid woodlands under agricultural crop production, balancing ecological function and sustainable agricultural viability.

Justification:

This reference value is a synthesized proxy derived from the best available evidence balancing ecological function and agricultural viability.

Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

Preview of Beale (1973)
Beale (1973)
Contextual Support

Management of eucalypt woodlands

View Source

Context

  • Region Australia
  • Biome Temperate Semi-Arid Shrublands & Open Woodlands
  • Land Use Agricultural Crop Production
  • Assessment Conservation Target
  • Vegetation Woodland
  • Evidence Type TargetCondition

Lifecycle

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

Notes

Lower Critical Threshold: 2 m²/ha. Upper Detrimental Threshold: 10 m²/ha. The range 4–8 m²/ha reflects functional, well-managed semi-arid agroforestry systems balancing ecological health and production.