Basal Area — Benchmark Detail

Benchmark Value

5.1 m²/ha

Direction: Higher is desirable ↑

Form: Point

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 5 benchmarks together — the OptimalRange form drives the primary score, while 4 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary Point Guard Point Guard MinimumOnly Guard MaximumOnly Guard

Evidence & Context

The primary finding identifies a benchmark value of 5.1 m²/ha.

Metric Definition:

Tree basal area measured as the cross-sectional area of tree stems per hectare in a grazed semi-arid woodland system.

Benchmark Definition:

This benchmark represents the best available condition of tree basal area in a managed grazing landscape within the Arid Inland Floodplains biome, reflecting a high ecological function compatible with sustainable pastoral production.

Justification:

Selected based on a peer-reviewed field measurement from a long-term grazed semi-arid woodland under improved management, representing a high ecological function state compatible with sustainable pastoral production.

Sources (1)

Preview of Long-term monitoring and modelling of pasture regeneration and water quality from a Bothriochloa pertusa site in the Great Barrier Reef catchments - CSIRO PUBLISHING | The Rangeland Journal, accessed July 15, 2025,

Long-term monitoring and modelling of pasture regeneration and water quality from a Bothriochloa pertusa site in the Great Barrier Reef catchments - CSIRO PUBLISHING | The Rangeland Journal, accessed July 15, 2025, Journal

Reducing the impacts of grazing on water quality - EPA Victoria, accessed July 10, 2025,

View Source

Supporting Sources (3)

Additional references from the underlying research that informed this benchmark.

Environmental flow requirements in arid zone rivers- A case study from the Lake Eyre Basin, central Australia - ResearchGate

Contextual Support Journal

Environmental flow requirements in arid zone rivers- A case study from the Lake Eyre Basin, central Australia - ResearchGate

View Source

Land condition - FutureBeef

Contextual Support GreyLiterature

Rates of erosion and sediment transport in Australia - INTERNATIONAL ASSOCIATION OF HYDROLOGICAL SCIENCES

View Source

Preview of Persistence of in-stream waterholes in ephemeral rivers of tropical northern Australia and potential impacts of climate change - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 18, 2025,

Persistence of in-stream waterholes in ephemeral rivers of tropical northern Australia and potential impacts of climate change - CSIRO PUBLISHING | Marine and Freshwater Research, accessed July 18, 2025,

Contextual Support Journal

Persistence of in-stream waterholes in ephemeral rivers of tropical northern Australia and potential impacts of climate change - CSIRO PUBLISHING | Marine and Freshwater Research

View Source

Context

Region Australia
Biome Arid Inland Floodplains & Ephemeral River Systems
Land Use Livestock Grazing & Pasture
Assessment Conservation Target
Vegetation Woodland
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

This benchmark is derived from a semi-arid woodland site with improved grazing management and is considered the best-on-offer condition for the biome and land use. It is positioned within the optimal functional range balancing facilitative and competitive effects of trees.

Related Benchmarks

Other benchmarks in the AUS-AIF-LVG-BAS family.