Inputs are not stocks
Biomass and root carbon entering soil should not be reported as an equivalent increase in stable soil organic carbon.
Design defensible measurement
A credible program needs consistent sampling and interpretation.
- Georeferenced baseline samples
- Fixed depth and bulk density
- Comparable season and laboratory method
- Multi-year resampling
Use product figures carefully
The Ruziziensis file’s annual organic-carbon figure requires a named method and boundary before use.