Basal Area — Benchmark Detail

Benchmark Value

No specific value — see range

Range: 14 to 19 m²/ha

Optimal Range: 14 to 19

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

An Optimal Range for balancing ecological health and sustainable production is identified as 14 to 19 m²/ha.

Metric Definition:

Basal area as total cross-sectional area of tree stems per hectare.

Benchmark Definition:

An optimal basal area range balancing ecological health and sustainable timber production in production forestry on tropical and subtropical maritime islands in Australia.

Justification:

Synthesized from the lower threshold and the saturation point data to maintain ecological structure and productive vigor.

Sources (1)

Preview of Native Forests Show Resilience to Selective Timber Harvesting in Southeast Queensland, Australia

Native Forests Show Resilience to Selective Timber Harvesting in Southeast Queensland, Australia Journal

Resilience of selectively harvested forests to timber harvesting in subtropical Australia

View Source

Context

Region Australia
Biome Tropical & Subtropical Maritime Islands
Land Use Production Forestry
Assessment Not Stated
Evidence Type HealthyOperationalRange

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

Operating within this range allows maintenance of a healthy, structurally diverse forest ecosystem while optimizing sustainable timber production. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

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