A 120 ha agroforestry plot earns tradable carbon credits once its trees sequester enough CO₂ to clear a verified baseline. Three linked formulas drive the model:
Biomass growth Gb = 6.5 t/ha/yr × (density / 400)
CO₂ sequestered Sco2 = 120 ha × Gb × 0.45 (carbon fraction) × 3.67 (CO₂:C ratio)
Net profit P = (Sco2 − 420) × price − $14/ha × 120 ha
Resilience index R = 0.5 × (farmers enrolled) + 0.5 × 0.68 (fixed baseline score)
- Tree density — trees per hectare; scales biomass growth and, through it, total annual CO₂ sequestration across the 120 ha plot.
- Credit price — market $/t CO₂ paid for credits above the 420 t CO₂/yr baseline, net of a flat $14/ha verification cost.
- Farmers enrolled — share of the local farmer community participating; blended with a fixed 0.68 baseline resilience score.
Each bar in the scene is normalised 0–1 against a realistic reference ceiling from the source planning model, so pushing a slider to its extreme will visibly cap the bar even as the underlying number keeps growing.