Soil Structure & Compaction

AUS-ASC-LVG-SSC General Low confidence

Benchmark Value

2000 kPa
Direction: Lower is desirable ↓
Form: UpperThreshold

Scoring Curve

This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context.

Evidence & Context

General soil science literature indicates that penetrometer resistance values above 2000-2500 kPa begin to significantly restrict root growth for many agricultural plant species

Metric Definition:

Penetrometer resistance

Benchmark Definition:

This benchmark represents the upper limit of soil compaction measured by penetrometer resistance, above which root growth in pasture species begins to be significantly restricted in the Alpine and Subalpine Complex biome under livestock grazing and pasture land use.

Justification:

General threshold where root growth of many pasture species begins to be significantly impeded; aeration and infiltration may also be compromised.

Sources (1)

Preview of Drewry, J. J., Cameron, K. C., & Buchan, G. D. (2008). Pasture yield and soil physical property responses to soil compaction from treading and grazing – a review.
Drewry, J. J., Cameron, K. C., & Buchan, G. D. (2008). Pasture yield and soil physical property responses to soil compaction from treading and grazing – a review. Journal

Manea, A., & Aon, M. A. (2020). Penetration resistance: An effective indicator for monitoring soil compaction in pastures. Ecological Indicators, 117, 106647.

View Source

Supporting Sources (7)

Additional references from the underlying research that informed this benchmark.

Preview of Alpine Grazing Taskforce. (2005). Report of the Alpine Grazing Taskforce. Department of Sustainability and Environment, Victoria.
Alpine Grazing Taskforce. (2005). Report of the Alpine Grazing Taskforce. Department of Sustainability and Environment, Victoria.
Contextual Support Journal

Effects of grazing on alpine grassland soil available nutrients across the Tibetan Plateau

View Source
Preview of Australian Subalpine Soil Invertebrate Diversity and Abundance Under Simulated Drought - ANU Student Journals
Australian Subalpine Soil Invertebrate Diversity and Abundance Under Simulated Drought - ANU Student Journals
Contextual Support Journal

Kirkpatrick, J. B., Bridle, K., & Wild, A. S. (2014). Patterns of variation in Australian alpine soils and their relationships to parent material, vegetation formation, climate and topography. CATENA, 121, 186-194.

View Source
Preview of Determining baselines, drivers and trends of soil health and stability ..., accessed July 12, 2025,
Determining baselines, drivers and trends of soil health and stability ..., accessed July 12, 2025,
Contextual Support Journal

Phosphorus: a finite resource essential for life, critical for agriculture and food security

View Source
Preview of finalrepport - MLA, accessed August 5, 2025,
finalrepport - MLA, accessed August 5, 2025,
Direct Evidence Journal

Department of Primary Industries and Regional Development, Western Australia. (n.d.). Soil compaction overview.

View Source
Preview of Lunt, I. D., Eldridge, D. J., Morgan, J. W., & Witt, G. B. (2007). A framework to predict the effects of livestock grazing and grazing exclusion on conservation values in natural ecosystems in Australia. Australian Journal of Botany, 55(4), 401-415.
Lunt, I. D., Eldridge, D. J., Morgan, J. W., & Witt, G. B. (2007). A framework to predict the effects of livestock grazing and grazing exclusion on conservation values in natural ecosystems in Australia. Australian Journal of Botany, 55(4), 401-415.
Contextual Support Government

Lunt, I. D., Eldridge, D. J., Morgan, J. W., & Witt, G. B. (2007). A framework to predict the effects of livestock grazing and grazing exclusion on conservation values in natural ecosystems in Australia. Australian Journal of Botany, 55(4), 401-415.

View Source
Preview of Scherrer, D., & Pickering, C. M. (2009). Modelling the impact of drought on grass survival in Australian alpine environments. Journal of Plant Ecology, 5(2), 121-129.
Scherrer, D., & Pickering, C. M. (2009). Modelling the impact of drought on grass survival in Australian alpine environments. Journal of Plant Ecology, 5(2), 121-129.
Contextual Support GreyLiterature

Drewry, J. J., Cameron, K. C., & Buchan, G. D. (2008). Pasture yield and soil physical property responses to soil compaction from treading and grazing – a review. Australian Journal of Soil Research, 46(4), 237-256.

View Source
Preview of TERN. (n.d.). Sustaining the Australian Alps. Terrestrial Ecosystem Research Network.
TERN. (n.d.). Sustaining the Australian Alps. Terrestrial Ecosystem Research Network.
Contextual Support Journal

TERN. (n.d.). Sustaining the Australian Alps. Terrestrial Ecosystem Research Network.

View Source

Context

  • Region Australia
  • Biome Alpine and Subalpine Complex
  • Land Use Livestock Grazing & Pasture
  • Assessment Agricultural Biodiversity Target
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 3 Jun 2026

Notes

Range provided as 2000-2500 kPa.

Related Benchmarks

Other benchmarks in the AUS-ASC-LVG-SSC family.

3000 kPa Low
Livestock Grazing & Pasture ยท Agricultural Biodiversity Target
UpperThreshold Active v1