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 4 benchmarks together — the OptimalRange form drives the primary score, while 3 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Analysis of functional thresholds suggests a lower critical limit below ~5 m²/ha, where woodland structure is compromised.
Basal Area (BA) as the cross-sectional area of tree stems at breast height per unit ground area.
This benchmark represents the lower critical threshold of Basal Area below which woodland structure and function are lost in temperate dry woodlands and native grasslands under livestock grazing.
Based on ecosystem definitions, 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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