2nd October 2019

britannica
18

What is the definition of primary productivity?

Primary productivity is the rate at which energy is converted by photosynthetic and chemosynthetic autotrophs to organic substances. The total amount of productivity in a region or system is gross primary productivity.

Also, how can primary productivity be measured?

Primary productivity can be measured in three ways: The amount of carbon dioxide used. The rate of sugar formation. The rate of oxygen production.

How do you measure net primary productivity?

Primary productivity is the measure of carbon intake by plants during photosynthesis, and this measure is an important indicator for studying the health for plant communities. Net Primary Productivity (NPP) is the amount of carbon uptake after subtracting Plant Respiration (RES) from Gross Primary Productivity (GPP).

How do you measure net productivity?

Another term, which is used to describe this process more quantitatively, is gross productivity, the amount of biomass produced by photosynthesis per unit area over a specific time period. Gross productivity can be measured indirectly using grass plants. The answer is due to the metabolic needs of the plant itself.
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