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4 Feb 2026·Source: The Indian Express
3 min
Environment & EcologyNEWS

Arunachal's Subansiri Hydel Project: Plantation Proposal Amidst Environmental Concerns

Arunachal's Subansiri hydel project faces scrutiny over compensatory afforestation plans.

Arunachal's Subansiri Hydel Project: Plantation Proposal Amidst Environmental Concerns

Photo by Derek Lee

The Subansiri hydel project in Arunachal Pradesh faces scrutiny regarding its compensatory afforestation plans. Decisions to undertake an avulsiion hydro-peaking to allow elephants to cross the river have been taken. The project involves planting in areas already under plantations, raising concerns about its environmental impact. Six reminders from Environment Ministry since 2020 have highlighted the need for proper compensatory afforestation. The project's impact on the local ecosystem and biodiversity remains a key concern.

Key Facts

1.

Project: Subansiri hydel project in Arunachal Pradesh

2.

Issue: Compensatory afforestation plans under scrutiny

3.

Concern: Planting in existing plantation areas

4.

Reminder: Six reminders from Environment Ministry since 2020

UPSC Exam Angles

1.

GS Paper 3: Environment and Ecology - Conservation, environmental pollution and degradation, environmental impact assessment

2.

Connects to syllabus topics on environmental governance, forest management, and biodiversity conservation

3.

Potential question types: Statement-based MCQs on legal provisions, analytical questions on the effectiveness of compensatory afforestation

Visual Insights

Subansiri Hydel Project Location

Map showing the location of the Subansiri Lower Hydroelectric Project at the border of Arunachal Pradesh and Assam.

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📍Arunachal Pradesh📍Assam
More Information

Background

The concept of compensatory afforestation arises from the need to mitigate the environmental impact of projects that require forest land diversion. The legal basis for this in India stems from the Forest Conservation Act of 1980, which mandates that when forest land is diverted for non-forest purposes, an equivalent area of non-forest land must be afforested. This act aims to maintain ecological balance and prevent deforestation. Over time, the implementation of compensatory afforestation has evolved. Initially, the focus was primarily on afforesting an equivalent area of land. However, concerns about the quality of afforestation and its impact on local ecosystems led to the establishment of the Compensatory Afforestation Fund Management and Planning Authority (CAMPA). CAMPA was created to manage funds collected for compensatory afforestation and ensure that afforestation activities are carried out effectively and sustainably. The legal framework surrounding compensatory afforestation is further strengthened by various guidelines and court orders. The Supreme Court has played a significant role in ensuring the proper implementation of compensatory afforestation schemes. These legal interventions emphasize the importance of considering the ecological and social impacts of afforestation projects, ensuring that they benefit local communities and contribute to biodiversity conservation. The Environment Ministry plays a crucial role in monitoring and enforcing these regulations.

Latest Developments

Recent developments in compensatory afforestation include a greater emphasis on using native species and involving local communities in the planning and implementation of afforestation projects. The Ministry of Environment, Forest and Climate Change (MoEFCC) is promoting the use of technology, such as drones and remote sensing, to monitor afforestation activities and ensure their effectiveness. This shift towards more sustainable and participatory approaches aims to address some of the past shortcomings of compensatory afforestation schemes. However, challenges remain in ensuring the effective implementation of compensatory afforestation. One of the key challenges is the availability of suitable land for afforestation, particularly in densely populated areas. Another challenge is ensuring the long-term survival of planted trees and the restoration of degraded ecosystems. Addressing these challenges requires a coordinated effort from government agencies, local communities, and other stakeholders. Looking ahead, there is a growing recognition of the need to integrate compensatory afforestation with broader landscape restoration efforts. This includes promoting agroforestry, restoring degraded forests, and enhancing the resilience of ecosystems to climate change. By adopting a more holistic approach, compensatory afforestation can contribute to achieving multiple environmental and social benefits.

Frequently Asked Questions

1. What is the main environmental concern regarding the Subansiri hydel project in Arunachal Pradesh?

The primary concern revolves around the compensatory afforestation plans, specifically the proposal to plant in areas that already have plantations. This raises questions about the genuine environmental benefit and effectiveness of such afforestation efforts.

2. What is compensatory afforestation and what legal act mandates it?

Compensatory afforestation is the practice of planting trees to compensate for forest land diverted for non-forest purposes. In India, the Forest Conservation Act of 1980 mandates this, requiring an equivalent area of non-forest land to be afforested when forest land is used for other projects.

3. Why is the Subansiri hydel project in the news recently?

The Subansiri hydel project is in the news due to scrutiny of its compensatory afforestation plans. The Environment Ministry has sent six reminders since 2020, highlighting concerns about planting in existing plantation areas and the overall environmental impact.

4. What concerns has the Environment Ministry raised regarding the afforestation plans?

The Environment Ministry has raised concerns about the suitability of planting in areas already under plantations, questioning the ecological benefits. They have sent six reminders since 2020, emphasizing the need for proper compensatory afforestation to mitigate the project's impact.

5. What is the potential impact of the Subansiri hydel project on the local ecosystem?

The project's impact on the local ecosystem and biodiversity is a key concern. This includes potential disruptions to river flow, habitat loss for aquatic and terrestrial species, and the overall ecological balance of the region.

6. How might the issue of compensatory afforestation impact local communities?

If afforestation is not done properly, local communities could face negative impacts. This could include loss of access to forest resources, displacement, and disruption of traditional livelihoods. Proper planning and community involvement are crucial to ensure positive outcomes.

7. What are the recent developments in compensatory afforestation practices being promoted by the Ministry of Environment, Forest and Climate Change (MoEFCC)?

The Ministry of Environment, Forest and Climate Change (MoEFCC) is promoting the use of native species and involving local communities in afforestation projects. They are also using technology like drones and remote sensing to monitor afforestation activities and ensure their effectiveness.

8. What are the pros and cons of compensatory afforestation as a mitigation strategy for environmental damage caused by projects like the Subansiri hydel project?

Pros include potential habitat restoration and carbon sequestration. Cons include the risk of ineffective planting (e.g., in already planted areas), displacement of local communities, and failure to fully replicate the original ecosystem's biodiversity.

9. What key facts about the Subansiri hydel project should I remember for the Prelims exam?

Remember that the project is in Arunachal Pradesh, its compensatory afforestation plans are under scrutiny, and the Environment Ministry has sent reminders about concerns since 2020. Focus on the environmental impact and the concept of compensatory afforestation.

Exam Tip

Focus on location and environmental aspects for Prelims.

10. What is 'avulsion hydro-peaking' and how is it related to the Subansiri project?

Avulsion hydro-peaking refers to the practice of releasing large volumes of water from a dam in short bursts. In the context of the Subansiri project, decisions were taken to undertake avulsion hydro-peaking to allow elephants to cross the river, mitigating potential harm to wildlife.

Practice Questions (MCQs)

1. Consider the following statements regarding the Compensatory Afforestation Fund Management and Planning Authority (CAMPA): 1. CAMPA was established to manage funds collected for compensatory afforestation. 2. CAMPA ensures afforestation activities are carried out effectively and sustainably. 3. CAMPA is primarily funded by international organizations. Which of the statements given above is/are correct?

  • A.1 and 2 only
  • B.2 and 3 only
  • C.1 and 3 only
  • D.1, 2 and 3
Show Answer

Answer: A

Statement 1 is CORRECT: CAMPA was indeed established to manage funds collected for compensatory afforestation, ensuring these funds are used for their intended purpose. Statement 2 is CORRECT: CAMPA's mandate includes ensuring that afforestation activities are carried out effectively and sustainably, promoting long-term ecological benefits. Statement 3 is INCORRECT: CAMPA is primarily funded by payments from user agencies who divert forest land for non-forest purposes, not by international organizations. These funds are then used for afforestation and related activities.

2. Which of the following principles is/are considered while undertaking compensatory afforestation? 1. Afforestation should be done as close as possible to the area where forest land was diverted. 2. Preference should be given to planting native species. 3. Local communities should be involved in the planning and implementation of afforestation projects. Select the correct answer using the code given below:

  • A.1 only
  • B.2 and 3 only
  • C.1 and 3 only
  • D.1, 2 and 3
Show Answer

Answer: D

All three statements are correct and reflect the principles that guide compensatory afforestation: Statement 1 is CORRECT: Afforestation should ideally be done as close as possible to the diverted area to compensate for the local ecological loss. Statement 2 is CORRECT: Preference for native species ensures better adaptation to the local environment and supports local biodiversity. Statement 3 is CORRECT: Involving local communities ensures better project implementation, monitoring, and long-term sustainability by fostering a sense of ownership and responsibility.

3. With reference to the Subansiri hydel project mentioned in the news, consider the following statements: 1. The project is located in Arunachal Pradesh. 2. The project involves compensatory afforestation in areas already under plantations. 3. The Environment Ministry has issued six reminders since 2020 regarding compensatory afforestation for the project. Which of the statements given above is/are correct?

  • A.1 and 2 only
  • B.2 and 3 only
  • C.1 and 3 only
  • D.1, 2 and 3
Show Answer

Answer: D

All three statements are correct as per the information provided in the news summary: Statement 1 is CORRECT: The Subansiri hydel project is indeed located in Arunachal Pradesh. Statement 2 is CORRECT: The project's compensatory afforestation plans involve planting in areas already under plantations, raising environmental concerns. Statement 3 is CORRECT: The Environment Ministry has issued six reminders since 2020, highlighting the need for proper compensatory afforestation for the project.

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