Litter Cover

AUS-AMR-FOR-LIT General Moderate confidence

Benchmark Value

No specific value — see range

Range: 50 to 70 %

Thresholds: Lower: 50, Upper: —

Optimal Range: 50 to 70

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 17 benchmarks together — the OptimalRange form drives the primary score, while 16 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary MinimumOnly Guard OptimalRange Guard Point Guard OptimalRange Guard MinimumOnly Guard LowerThreshold Guard OptimalRange Guard MinimumOnly Guard OptimalRange Guard UpperThreshold Guard MinimumOnly Guard LowerThreshold Guard UpperThreshold Guard OptimalRange Guard MinimumOnly Guard LowerThreshold Guard

Evidence & Context

This evidence strongly supports a critical lower threshold for total groundcover in the range of 50% to 70%. The 50% value represents the absolute minimum to mitigate significant wind erosion risk on flatter areas, while the 70% value is a more conservative threshold necessary to manage water erosion on the gentle to moderate slopes characteristic of the target biome.

Metric Definition:

Total Groundcover (%)

Benchmark Definition:

This benchmark defines the optimal range of total groundcover percentage needed to prevent significant wind and water erosion in the Arid Mountain Ranges & Uplands biome under production forestry land use.

Justification:

Land management agencies across Australia have developed clear, evidence-based guidelines for minimum groundcover levels required to prevent accelerated erosion.

Sources (2)

Groundcover Management - Technical Note 19 -18842 Journal

Groundcover Management - Technical Note 19 -18842

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Preview of Maintaining groundcover to reduce erosion and sustain production - NSW Department of Primary Industries, accessed July 22, 2025,

Maintaining groundcover to reduce erosion and sustain production - NSW Department of Primary Industries, accessed July 22, 2025, Journal

Lang, D. (1979). Groundcover for pastures. Journal of Soil Conservation NSW.

View Source

Supporting Sources (3)

Additional references from the underlying research that informed this benchmark.

Effects of fuel reduction burning on fire behaviour ... - DBCA Library

Direct Evidence Journal

Effects of fuel reduction burning on fire behaviour ... - DBCA Library

View Source

Fuel reduction and fire management

Contextual Support Journal

Fuel reduction and fire management

View Source

Victorian semi-arid woodlands - Arthur Rylah Institute for Environmental Research

Direct Evidence Journal

Australia's Sustainable Forest Management - DAFF, accessed July 12, 2025,

View Source

Context

Region Australia
Biome Arid Mountain Ranges & Uplands
Land Use Production Forestry
Assessment Pristine Reference
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 19 Mar 2026

Notes

Lower Critical Threshold: 50 %. No upper detrimental threshold — higher values are always better up to natural saturation. The 50-70% threshold refers to total groundcover, not just litter cover. Below 50% total cover, the risk of irreversible soil degradation is high.

Related Benchmarks

Other benchmarks in the AUS-AMR-FOR-LIT family.