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.
Evidence & Context
A pivotal study identified a critical initial SOC threshold of approximately 1.5% that fundamentally alters how the soil carbon system responds to management inputs, specifically nitrogen fertilization.
Critical SOC threshold affecting soil carbon stability and response to nitrogen fertilization
Critical SOC threshold for stable carbon accumulation and effective nitrogen response.
Represents a biogeochemical tipping point where soil carbon cycling shifts from transient to stable pools.
Sources (1)
Soil organic carbon thresholds control fertilizer effects on carbon accrual in croplands worldwide - PMC
View SourceSupporting Sources (4)
Additional references from the underlying research that informed this benchmark.
Beefing up carbon capture | On-farm emissions case studies - Agriculture Victoria
View SourceDevelopment of a soil carbon benchmark matrix for central west NSW - IUSS
View SourceHow Much Carbon Can Soil Store - NSW | Fact Sheets | soilquality.org.au
View SourceSoil carbon dynamics under different cropping and pasture management in temperate Australia: Results of three long-term experiments - CSIRO Publishing
View Source