How does the Net Primary Productivity work?

NPP = GPP − Ra (autotrophic respiration) Then: In gC/m²/year or kcal/m²/year.

Can you give an example of how to use the Net Primary Productivity?

Example: Input Tropical rainforest GPP 7000 · Ra 3500 gives a result of NPP = 3,500 gC/m²/yr (Highest productivity ecosystem).

Is the Net Primary Productivity free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Net Primary Productivity?

Our Net Primary Productivity uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Net Primary Productivity

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GPP (kcal/m²/yr)

Respiration R (kcal/m²/yr)

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.

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Did You Know?

Agriculture covers 12% of global land but humans appropriate ~24% of terrestrial NPP for food, feed, and fibre.

References

›Primary production — Wikipedia

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