Litter Cover

AUS-ASC-URB-LIT General Moderate confidence

Benchmark Value

90 %
Direction: Higher is desirable ↑
Form: MinimumOnly

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 2 benchmarks together — the OptimalRange form drives the primary score, while 1 guard(s) constrain the result.

Evidence & Context

Proposed Lower Critical Threshold: <90%

Metric Definition:

Percentage of ground covered by plant litter and living vegetation

Benchmark Definition:

This benchmark defines the lower critical threshold for litter cover in the Alpine and Subalpine Complex biome under Urban & Developed Use, below which erosion and soil degradation processes are likely to initiate.

Justification:

The loss of cover continuity below 90% signifies the onset of accelerated erosion and soil degradation via frost heave and erosion processes.

Sources (1)

Preview of theaustralianalpsnationalparks.org, accessed on May 29, 2025,
theaustralianalpsnationalparks.org, accessed on May 29, 2025, Journal

Soil Conservation in Alpine Catchments - The Kosciuszko Huts Association, accessed August 17, 2025,

View Source

Supporting Sources (2)

Additional references from the underlying research that informed this benchmark.

Preview of Draft Discussion Paper Feasibility assessment ... - NSW Government
Draft Discussion Paper Feasibility assessment ... - NSW Government
Contextual Support

Draft Discussion Paper Feasibility assessment ... - NSW Government

View Source
Preview of The Australian Alps rehabilitation manual
The Australian Alps rehabilitation manual
Contextual Support Journal

Invasive Species Research - Research Centre for Applied Alpine Ecology

View Source

Context

  • Region Australia
  • Biome Alpine and Subalpine Complex
  • Land Use Urban & Developed Use
  • Assessment Rehabilitation Target
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 1 Jun 2026

Notes

Below this level, bare ground becomes a significant component, initiating a positive feedback loop of soil degradation via frost heave and erosion, compromising long-term stability.

Related Benchmarks

Other benchmarks in the AUS-ASC-URB-LIT family.