Soil Organic Carbon (SOC)
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 2 benchmarks together — the OptimalRange form drives the primary score, while 1 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
This range is centered on the benchmark value of 1.26% from the Cobar study. It represents the optimal functional range for soils with a balanced texture and is supported by mean values for loams in broader studies.
Indicative healthy SOC range (%) for loamy soils (loamy Kandosols, Calcarosols, duplex soils) in the Arid Mountain Ranges & Uplands biome under conservation use.
This benchmark represents the typical soil organic carbon range for loamy soils in the Arid Mountain Ranges & Uplands biome under conservation, reflecting their balanced texture and higher capacity for SOC storage.
Supported by benchmark value from Cobar study and Great Western Woodlands data, reflecting typical loamy soil SOC levels.
Sources (1)
The relationship between soil organic carbon and soil surface characteristics in the semi-arid rangelands of southern Australia
View SourceSupporting Sources (2)
Additional references from the underlying research that informed this benchmark.
Great Western Woodlands, Ground Water Data, 2014 - TERN Data Discovery Portal, accessed July 10, 2025,
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Is there a critical level of organic matter in the agricultural soils of temperate regions: A review | Request PDF - ResearchGate
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