Paano Kalkulahin si Net Primary Productivity
Ano ang Net Primary Productivity?
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.
Step-by-Step na Gabay
- 1NPP = GPP − Ra (autotrophic respiration)
- 2In gC/m²/year or kcal/m²/year
Mga Nalutas na Halimbawa
Input
Tropical rainforest GPP 7000 · Ra 3500
Resulta
NPP = 3,500 gC/m²/yr
Highest productivity ecosystem
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