Basal Area
Benchmark Value
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.
Contributing Benchmarks
Evidence & Context
A lower critical limit below ~5 m²/ha, where woodland structure is compromised.
Basal Area (BA) quantifies the cross-sectional area of tree stems at breast height per unit ground area.
This benchmark defines the lower critical basal area threshold below which woodland structure and function are compromised in temperate dry woodlands and native grasslands under livestock grazing.
Based on ecosystem definitions and evidence from degradation and recovery studies indicating loss of woodland function below this level.
Sources (1)
Synthesis derived from multiple sources including Lindenmayer et al. (2020), Wardle et al. (2024), Florence (2002), Fensham (1998), NSW OEH (2019), Keto & Scott (2024). See report Sections 3 & 6 for details.
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