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प्रश्न
State the relation between gross and net primary productivity.
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उत्तर
The relation between the gross and net primary productivity can be shown as:
Pn = Pg − R
where,
Pn = Net primary productivity
Pg = Gross primary productivity
R = Respiration
संबंधित प्रश्न
How are productivity, gross productivity, net primary productivity and secondary productivity interrelated ?
What is primary productivity?
Explain what does the equation given below show:
NPP = GPP – R
Answer the following question.
Describe the inter-relationship between productivity, gross primary productivity, and net productivity.
Which one of the following ecosystem is most productive in term of net primary production?
How much of the net primary productively of a terrestrial ecosystem is eaten and digested by herbivores?
Which of the following ecosystems is most productive in terms of net primary production?
Justify the pitcher plant as a producer.
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”.
Use the information provided in the table given below to answer the following questions:
| Tropic level | Net Production(KJm-2y-1) | Respiration (KJm-2y-1) |
| Top Carnivore | 50 | 35 |
| Carnivores | 420 | 378 |
| Herbivores | 4490 | 4041 |
| Producers | 45000 | 40,367 |
- Calculate the gross primary productivity.
- Analyze the trend in the Net Production from Producers to Top Carnivore. Give a reason for your observation.
