Maximum net productivity in the terrestrial ecosystem is in

Options

A. Rain forest
B. Deciduous forest
C. Mangrove plantation
D. Both (a) and (b)

Answer

To determine the maximum net productivity in the terrestrial ecosystem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Ecosystem Productivity**: Ecosystem productivity refers to the rate at which energy is produced and stored by primary producers (like plants) through photosynthesis.

2. **Classify Ecosystems by Productivity**: Ecosystems can be classified into three main categories based on their productivity levels:
- **High Productivity Ecosystems**: These ecosystems have a primary productivity of approximately 2 to 4 kg per meter square per year.
- **Average Productivity Ecosystems**: These ecosystems have moderate productivity levels.
- **Low Productivity Ecosystems**: These ecosystems have low productivity, often below 0.5 to 3 grams per meter square per year.

3. **Identify High Productivity Ecosystems**: Examples of high productivity ecosystems include:
- Tropical rainforests
- Flood plains
- Coral reefs
- Areas of upwelling
- Sugarcane fields

4. **Evaluate Other Ecosystems**:
- Average productivity ecosystems include temperate forests and common agricultural crops.
- Low productivity ecosystems include grasslands, savannas, deserts, deep sea, and arid lands.

5. **Focus on Tropical Rainforests**: Among the listed ecosystems, tropical rainforests are known for their high levels of biodiversity, ample sunlight, and nutrient availability, making them the most productive terrestrial ecosystem.

6. **Conclusion**: Based on the classification and examples provided, the maximum net productivity in the terrestrial ecosystem is found in **tropical rainforests**.

### Final Answer:
The maximum net productivity in the terrestrial ecosystem is in **tropical rainforests**.

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