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 basal area approaching zero represents a critically degraded state, not a healthy pasture.
Basal area representing the minimum critical threshold below which ecosystem function is impaired.
The lower critical threshold for basal area indicating severe degradation and loss of ecosystem services in arid grazing landscapes.
The scientific literature does not specify a precise numerical value for a lower critical basal area threshold, but it is qualitatively described as approaching zero, indicating severe degradation.
Sources (1)
Reducing the impacts of grazing on water quality - EPA Victoria, accessed July 10, 2025,
View SourceSupporting Sources (1)
Additional references from the underlying research that informed this benchmark.
Does grazing exclusion in Australia's rangelands affect biomass and debris carbon stocks?
View Source