IAS Mains Answer Writing-18 April 2026

1. Mangrove forests play a vital role in climate resilience, biodiversity conservation, and livelihood security in India. Examine their importance and critically assess the contribution of government interventions and community participation in sustaining mangrove ecosystems alongside economic activities.

Introduction

• Mangrove forests are unique coastal ecosystems found in intertidal zones of tropical and subtropical regions.

• India hosts about 4,992 sq km of mangroves (ISFR 2023), with major concentrations in the Sundarbans, Andaman & Nicobar Islands, and Gujarat.

• They are crucial for climate resilience, biodiversity, and coastal livelihoods.

Importance of Mangrove Forests

• Climate Resilience and Blue Carbon:

  • Mangroves are highly efficient carbon sinks (“blue carbon ecosystems”), storing up to 3–5 times more carbon than terrestrial forests.

  • Protect coastlines from cyclones, storm surges, and sea-level rise (e.g., reduced impact during cyclones like Amphan).

• Biodiversity Conservation:

  • Provide habitat for diverse flora and fauna including endangered species like Royal Bengal Tiger and estuarine crocodile.

  • Act as nursery grounds for fish, crustaceans, and marine biodiversity.

• Coastal Protection:

  • Prevent coastal erosion, stabilise shorelines, and reduce disaster risks.

  • Act as a natural barrier against tsunamis and flooding.

• Livelihood and Economic Significance:

  • Support fisheries, honey collection, fuelwood, and eco-tourism.

  • Nearly 4 million people in India depend directly or indirectly on mangroves.

Government Interventions

• Policy and Legal Measures:

  • Coastal Regulation Zone (CRZ) Notification under Environment Protection Act, 1986.

  • Mangroves classified as ecologically sensitive areas.

• National Schemes and Programs:

  • MISHTI Scheme (2023):

    • Mangrove Initiative for Shoreline Habitats & Tangible Incomes.

    • Focus: afforestation and livelihood generation.

    • Convergence with MGNREGA, CAMPA funds, and state schemes

  • National Coastal Mission (under NAPCC): Emphasis on climate adaptation and mangrove restoration.

• Conservation and Restoration Efforts:

  • Afforestation drives in states like Gujarat and Maharashtra.

  • India’s mangrove cover increased by ~540 sq km since 2011 (ISFR).

• International Commitments: Alignment with Ramsar Convention and SDGs.

  • Many mangrove areas designated as Ramsar sites (e.g., Sundarbans).

  • Alignment with Sustainable Development Goals (esp. SDG 13, 14, 15), Paris Agreement (blue carbon ecosystems)

• Limitations:

  • Weak enforcement of CRZ norms.

  • Coastal development (ports, aquaculture) still threatens mangroves.

  • Fragmented institutional coordination.

Community Participation

• Joint Forest Management (JFM): Local communities involved in protection and sustainable use.

• Traditional Practices: Sustainable fishing, honey collection, and resource use.

• Successful Models:

  • Community-led mangrove restoration in Gujarat and Odisha.

  • Self-help groups engaged in eco-tourism and conservation.

• Evaluation:

  • Strengths: Enhances sustainability, reduces conflicts, ensures livelihood security.

  • Challenges: Limited financial support, lack of awareness, competing economic pressures.

Way Forward

• Promote blue economy with sustainability.

• Strengthen community-based conservation models.

• Use remote sensing and GIS for monitoring.

• Ensure strict enforcement of CRZ norms.

• Integrate livelihood programs with conservation (eco-tourism, fisheries).

Conclusion

• Mangroves are indispensable for India’s ecological security and coastal economy.

• A synergistic approach combining robust policy frameworks with active community participation is essential to ensure their long-term sustainability amid rising developmental pressures.

2. Beyond its geopolitical importance, the Indian Ocean is a key determinant of India’s climate, biodiversity, and environmental stability. Analyse its role and assess the challenges associated with its sustainable management.

Introduction

• The Indian Ocean is the third-largest ocean, covering nearly 20% of Earth’s oceanic area, and is uniquely positioned to influence India’s geography.

• It is not just a geopolitical arena but a critical driver of India’s climate system, biodiversity, and environmental stability, making it indispensable for sustainable development.

Role of the Indian Ocean

• Climate Regulation (Core Determinant):

  • Monsoon Driver: The Indian Ocean governs the Southwest Monsoon, which provides ~70–75% of India’s annual rainfall and sustains agriculture and water security.

  • Indian Ocean Dipole (IOD):

    • A key climate phenomenon affecting rainfall variability.

    • Positive IOD enhances rainfall, while negative IOD suppresses it.

  • Interaction with ENSO: IOD can offset El Niño impacts, stabilising monsoon variability.

  • Heat Sink Role: Absorbs large amounts of heat, moderating global warming.

  • Extreme Weather Link: Ocean warming intensifies cyclones, floods, and erratic rainfall.

• Biodiversity and Marine Ecosystems:

  • Hosts diverse ecosystems: coral reefs, mangroves, seagrasses.

  • Regions like Lakshadweep and Andaman and Nicobar Islands are marine biodiversity hotspots.

  • Supports phytoplankton productivity, forming the base of marine food chains.

  • Crucial for fisheries → supports millions of livelihoods.

• Environmental and Ecological Stability:

  • Regulates regional temperature, humidity, and precipitation cycles.

  • Maintains carbon cycle and blue carbon ecosystems.

  • Buffers climate change impacts via ocean circulation systems.

  • Influences coastal ecosystems and shoreline stability.

• Economic-Ecological Linkages:

  • Supports blue economy sectors: fisheries, shipping, offshore energy.

  • Monsoon variability directly impacts agriculture, GDP, and inflation.

  • Nearly 70% of agriculture depends on monsoon rainfall, linking ocean dynamics to economic stability.

Challenges to Sustainable Management

• Rapid Ocean Warming:

  • The Indian Ocean has warmed ~1.0–1.2°C since the mid-20th century, faster than the global ocean average.

  • Projections suggest heatwave days may rise from ~20 days/year to ~220–250 days/year by 2100

  • Leads to coral bleaching and ecosystem collapse.

• Climate Variability and Extremes:

  • Increasing frequency of IOD fluctuations and ENSO interactions.

  • Rising extreme rainfall, droughts, and cyclones.

• Declining Monsoon Stability:

  • Long-term decline in monsoon rainfall trends in some regions.

  • Forecasting challenges due to complex ocean-atmosphere interactions.

• Marine Pollution:

  • Indian Ocean carries significant global plastic waste load.

  • Oil spills, chemical runoff degrade marine habitats.

• Overfishing and Resource Depletion: Unsustainable fishing threatens biodiversity and livelihoods.

• Coastal Degradation:

  • Urbanisation, port expansion, and habitat destruction.

  • Loss of mangroves and coral reefs.

• Weak Governance:

  • Fragmented ocean governance across countries.

  • Limited enforcement of marine conservation laws.

Assessment of Sustainable Management Efforts

• National Initiatives:

  • Deep Ocean Mission (2021–ongoing): Exploration of polymetallic nodules in the Central Indian Ocean Basin.

    • Strengthens scientific capacity and resource mapping.

  • Coastal Regulation Zone (CRZ) Notification, 2019: Issued under the Environment Protection Act, balances development and conservation.

  • Blue Economy policy framework: India’s Blue Economy, as outlined in the 2020 vision report by NITI Aayog, integrates economic growth with sustainability discourse

• Regional Cooperation:

  • Indian Ocean Rim Association (IORA).

  • Focus on maritime sustainability and disaster resilience.

• Technological Advances:

  • Satellite-based monitoring, improved cyclone forecasting.

  • AI-based climate modelling emerging.

Critical Evaluation

• Strengths:

  • Improved disaster preparedness (cyclone prediction accuracy improved significantly).

  • Growing focus on blue economy and climate resilience.

• Limitations:

  • Weak enforcement of pollution control.

  • Lack of integrated ocean governance.

  • Insufficient research in deep-sea ecosystems.

Way Forward

• Adopt Ecosystem-Based Ocean Management (EBOM).

• Strengthen marine protected areas (MPAs).

• Promote sustainable fisheries and blue economy practices.

• Enhance regional cooperation (IORA, SAGAR vision).

• Invest in climate modelling and ocean research.

Conclusion

• The Indian Ocean is the backbone of India’s climate system and ecological stability, directly influencing rainfall, biodiversity, and economic security.

• Ensuring its sustainability requires a holistic, science-driven, and cooperative governance framework, balancing development with environmental protection.