Question

what is net primary productivity​

Answer 1

Plants capture and store solar energy through photosynthesis. During photosynthesis, living plants convert carbon dioxide in the air into sugar molecules they use for food. In the process of making their own food, plants also provide the oxygen we need to breathe. Thus, plants provide the energy and air required by most life forms on Earth. Plant productivity also plays a major role in the global carbon cycle by absorbing some of the carbon dioxide released when people burn coal, oil, and other fossil fuels. The carbon plants absorb becomes part of leaves, roots, stalks or tree trunks, and ultimately, the soil.

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Answer 2

• It is the amount of organic matter stored by producers per unit time and per unit area.
• It is equal to organic matter synthesized by photosynthesis minus utilization in respiration and other losses.
• It depends upon gross primary productivity as well as amount of consumption of photosynthesis.
• NPP is equal to GPP-R, where R is energy used in respiration$.$