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 3 benchmarks together — the OptimalRange form drives the primary score, while 2 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
Synthesising these data points, the optimal range for SOC in pastures on Ferrosol soils within this biome is defined as 3.5% to 6.0%.
Soil Organic Carbon (SOC) content in soil, representing the carbon constituent of Soil Organic Matter.
This benchmark defines the optimal soil organic carbon range for pastures on Ferrosol soils in the Tropical & Subtropical Maritime Islands biome, indicating high ecological health and sustainable productivity.
Anchored by the optimal value from Norfolk Island assessments and consistent with data from analogous high-rainfall pasture systems.
Sources (2)
Potential for soil carbon sequestration in Northern Australian grazing lands: A review of the evidence
View SourceSpatial distribution of soil microbial activity and soil properties ..., accessed August 13, 2025,
View SourceSupporting Sources (3)
Additional references from the underlying research that informed this benchmark.
Soil Organic Carbon May Decline Under Climate Change: A Case Study in Mexican Forests, accessed July 19, 2025
View SourceA farmer's guide to increasing Soil Organic Carbon under pastures - NSW Department of Primary Industries
View SourceMapping soil organic carbon fractions for Australia, their stocks, and uncertainty - BG
View Source