Soil Structure & Compaction
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 10 benchmarks together — the OptimalRange form drives the primary score, while 9 guard(s) constrain the result.
Evidence & Context
This report proposes an indicative benchmark for penetrometer resistance in Australian Tropical Monsoonal Savannas managed for Conservation / Protected Natural Areas, aiming for values < 1000 kPa (ideally < 500 kPa) when measured at or near field capacity, to represent the "best available condition."
Penetrometer resistance (kPa) as a measure of soil structure and compaction, indicating mechanical impedance to root growth.
Penetrometer resistance indicates soil compaction affecting root growth and water infiltration in Tropical Monsoonal Savannas under conservation management. Values below 1000 kPa represent minimal compaction and better soil health.
The benchmark is inferred from soil physical principles and root limitation thresholds, supported by limited direct data from conservation sites.
Supporting Sources (23)
Additional references from the underlying research that informed this benchmark.
(PDF) Australian Savanna ecosystems - ResearchGate, accessed May 11, 2025
View SourceAuthor's personal copy - Texas A&M AgriLife
View SourceChallenging the maximum rooting depth paradigm in grasslands and savannas
View SourceEcological Sustainability of Military Training Areas in Australia's Tropical Savannas | Request PDF - ResearchGate
View SourceAustralian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC
View SourceShort-term effects of experimental fire for a soil under eucalyptus forest (SE Australia), accessed May 20, 2025
View SourceHippopotamus and livestock grazing near water points: consequences for vegetation cover, plant species richness and composition in African savannas - Frontiers
View SourceResting Subtropical Grasslands from Grazing in the Wet Season Boosts Biocrust Hotspots to Improve Soil Health - MDPI, accessed July 15, 2025,
View Source
The soil of abandoned farmland, Cumberland Plain Woodland and restored vegetation - Research Profiles and Repository, accessed July 15, 2025,
View SourceReview of threats to biodiversity in the Northern Territory - Environment and Natural Resources
View SourceNatural Recovery Dynamics of Alfalfa Field Soils under Different Degrees of Mechanical Compaction - ResearchGate
View Source
Savanna soil water content effect on its shear strength-compaction relationship - Bioline.org
View SourceSoil carbon sequestration in rangelands: a critical review of the impacts of major management strategies - CSIRO Publishing
View Source
high soil strength - fact sheet - GRDC
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Soil irrigation frequencies, compaction, air porosity and shear stress effects on soybean root development - SciELO México
View Source
Soil Quality and Its Management in Humid Subtropical and Tropical Environments - UKnowledge
View SourceAustralia's State of the Forests Report 2018 - DAFF, accessed July 31, 2025,
View Source
The effects of soil compaction on wheat seedling root growth are specific to soil texture and soil moisture status - Rothamsted Repository
View Source
The science of soil compaction - Department of Agriculture and Food
View SourceUncovering root compaction response mechanisms: new insights and opportunities - PMC
View Source
www.greeningaustralia.org.au, accessed May 11, 2025
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