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प्रश्न
Answer the following question.
Describe the inter-relationship between productivity, gross primary productivity, and net productivity.
उत्तर
The rate of biomass production per unit area, over a time period by plant during photosynthesis is called productivity.
- It is expressed (kcal m-2)yr-1or g/m2/yr or g m-2y-1.
- The amount of biomass or organic matter produced per unit area over a time period in plants during photosynthesis is called primary production.
| * It is the rate of production of organic matter during photosynthesis in an ecosystem. | * It is the weight of the organic matter stored by the produces in a unit area/volume per unit time. |
| * Some of GPP is utilized in respiration. |
NPP = GPP - R |
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संबंधित प्रश्न
Write the equation that helps in deriving the net primary productivity of an ecosystem.
State the relation between gross and net primary productivity.
Write the relationship between productivity, gross primary productivity, net primary productivity, and secondary productivity.
The biomes energy available for consumption by herbivores is called ______.
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
In the equation GPP − R = NPP R represents ______
Why are oceans least productive?
Justify the following statement in terms of ecosystem dynamics. “Nature tends to increase the gross primary productivity, while man tends to increase the net primary productivity”.
Which of the following ecosystems will be more productive in terms of primary productivity? Justify your answer. A young forest, a natural old forest, a shallow polluted lake, alpine meadow.
The primary productivity in an ecosystem is expressed as ______.
- gm-2 yr-1
- gm-2 yr
- Kcal m-2 yr-1
- Kcal m-2
