🌿Net Primary Productivity Calculator
Net Primary Productivity (NPP) is the rate at which plants produce organic matter through photosynthesis minus the carbon they use in their own respiration. NPP = GPP − Ra.
- 1NPP = GPP − Ra (autotrophic respiration)
- 2In gC/m²/year or kcal/m²/year
Tropical rainforest GPP 7000 · Ra 3500=NPP = 3,500 gC/m²/yrHighest productivity ecosystem
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Fun Fact
Agriculture covers 12% of global land but humans appropriate ~24% of terrestrial NPP for food, feed, and fibre.
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