💥Join UPSC 2027,2028 Mentorship (August Batch) + XFactor Notes & Microthemes PDF
Talk to Mentor

Civilsdaily

Login

Subject: Conservation & Mitigation

1. Conservation Progs.
2. Worldwide initiatives
3. Mitigation Strategies
4. Conventions and Protocols

  • ‘Smog-eating’ photocatalytic coatings on roads to curb pollution

    Why in the News?

    Delhi government has announced a feasibility study to test photocatalytic coatings on roads, pavements, and public spaces to bring visible improvements in air quality.

    About Smog:

    • Overview: Combination of smoke and fog, forming smoky fog with soot, gases, and moisture.
    • Components: Includes soot particulates, sulphur dioxide (SO₂), nitrogen dioxide (NO₂), hydrocarbons, carbon monoxide (CO), and ozone (O₃).

    • Types:

      1. Sulfurous Smog (London Smog) – Caused by burning coal and sulphur-bearing fuels; worsened by dampness and particulates.
      2. Photochemical Smog (Los Angeles Smog) – Produced when NOₓ and hydrocarbons react under sunlight, forming ozone; appears as a brownish haze with respiratory effects.

    • Pollutants:

      1. Primary pollutants: Directly emitted (NO₂, SO₂, hydrocarbons).
      2. Secondary pollutants:  Formed via reactions (ozone, acid rain).
    • Haze vs. Smog: Haze = dry particles reducing visibility; Smog = pollutants with condensation.
    • Effects: Respiratory distress, eye irritation, plant damage, reduced visibility, carcinogenic risk, worsened by inversion layers and low rainfall.

    What are “Smog-Eating” Coatings?

    • Technology: Photocatalytic coatings using titanium dioxide (TiO₂) on roads, pavements, and public surfaces.
    • Function: Under sunlight, TiO₂ breaks down pollutants like NO₂ and hydrocarbons into less harmful compounds.
    • Advantages: Low-cost, stable, compatible with traditional materials, effective in depollution and creating self-cleaning surfaces.

    Delhi Government Plan

    • Plan: If viable, Cabinet proposal for citywide rollout at busy corridors, markets, and public spaces.
    • Evaluation: Study to assess cost-effectiveness, safety, and sustainability while shortlisting suppliers.
    • Strategic Context: Part of a 24×7, year-round environmental action plan using technology-driven interventions.
    [UPSC 2013] Photochemical smog is a resultant of the reaction among-

    (a) NO₂, O₃ and peroxyacetyl nitrate in the prescence of sunlight *

    (b) CO₂, O₂, and peroxyacetyl nitrate in the presence of sunlight

    (c) CO, CO₂, and NO₂ at low temperature

    (d) high concentration of NO₂, O₃ and CO in the evening

     

  • Ecological Impact of the ELSA 3 Shipwreck in the Arabian Sea

    Why in the News?

    The sinking of the ELSA 3 ship off the Kerala coast in May led to a significant ecological disruption in the south-eastern Arabian Sea, a new study has confirmed.

    Ecological Impact of the ELSA 3 Shipwreck in the Arabian Sea

    About the Pollution and Contaminants:

    • Oil Slick: Wreck of ELSA 3 released petroleum pollutants, initially forming a slick of about 2 square miles.
    • Polyaromatic Hydrocarbons (PAHs): Compounds like naphthalene, fluorene, anthracene, phenanthrene, fluoranthene, pyrene detected; toxic, carcinogenic, and bioaccumulative.
    • Naphthalene Marker: High levels confirmed continuous leakage from fuel tanks.
    • Trace Metals: Nickel, lead, copper, vanadium found in elevated levels in water and sediments, worsening toxicity.
    • Distribution: Oil spread shifted with sea turbulence—first mid-depth concentration, later visible on the surface.

    Ecological Impacts of the Oil Spill:

    • Plankton: Zooplankton showed pollutant accumulation, marking entry into the marine food chain.
    • Fish Eggs & Larvae: Collected in the southwest monsoon spawning season displayed decay and mortality, threatening commercial species recruitment.
    • Benthic Organisms: Sensitive species declined within days; only pollution-tolerant worms and bivalves survived, reflecting seabed stress.
    • Higher Fauna: Brown Noddy seabird (Anous stolidus) recorded with oil-soaked plumage, highlighting risks to birds and larger marine life.
    • Overall Effect: A multi-level disruption from plankton to fish stocks to seabirds.

    Microbial Response and Bioremediation:

    • Bacterial Diversity: Metagenomic studies found hydrocarbon-degrading bacteria near the wreck.
    • Key Strains: Neptunomonas acidivorans, Halomonas tabrizica, Acinetobacter baumannii detected.
    • Implications: Their presence reflects both severe contamination and natural bioremediation potential.
    • Outlook: Microbial action may reduce pollution gradually, but contamination in the Arabian Sea remains significant.
    [UPSC 2017] In the context of solving pollution problems what is/are the advantage/disadvantages of bioremediation technique?

    1. It is a technique for cleaning up pollution by enhancing the same biodegradation process that occurs in nature.

    2. Any contaminant with heavy metals such as cadmium and lead can be readily and completely treated by bioremediation using microorganisms.

    3. Genetic engineering can be used to create microorganisms specifically designed for bioremediation.

    Select the correct answer using the code given below:

    Options: (a) 1 only, (b) 2 and 3 only, (c) 1 and 3 only* (d) 1, 2 and 3

     

  • How serious is the global plastic pollution crisis?

    Introduction

    Plastic—once hailed as a symbol of modern convenience—has now become a global menace. Its non-biodegradable nature, rising consumption, and weak waste management systems have led to an unprecedented ecological and socio-economic challenge. This year’s World Environment Day theme, Ending Plastic Pollution, reflects the international recognition of the crisis. The issue cuts across dimensions of environment, economy, health, governance, and ethics, making it a critical topic for civil services preparation.

    Why is Plastic Pollution Making Headlines?

    Plastic consumption and waste generation are reaching historic highs. In 2024 alone, 500 million tonnes of plastic were produced, generating 400 million tonnes of waste. The OECD projects that if current trends persist, plastic waste could almost triple to 1.2 billion tonnes by 2060. Such data marks a tipping point in human-environment relations. For the first time, experts warn that by mid-century there may be more plastic in the ocean than fish, a striking reversal of natural balance.

    How Severe is the Plastic Pollution Crisis?

    1. Rising consumption: Plastics production doubled between 2000 and 2019, reaching 460 million tonnes.
    2. Waste surge: Global plastic waste touched 353 million tonnes in 2019, with packaging alone contributing 40%.
    3. Recycling failure: Only 9% of waste is recycled; 50% ends up in landfills, and 22% escapes into open environments.
    4. Oceanic threat: About 11 million tonnes enter oceans annually, adding to the estimated 200 million tonnes already present.
    5. Climate connection: Plastics contribute 3.4% of global GHG emissions and could consume 19% of the global carbon budget by 2040.

    Why is Plastic Pollution So Difficult to Manage?

    1. Non-biodegradability: Plastics fragment into micro- and nano-particles, contaminating soil, water, and even human bloodstreams.
    2. Global spread: From Mount Everest to ocean trenches, no ecosystem is spared.
    3. Health risks: Microplastics pose risks to food chains, water safety, and respiratory and cardiovascular health.
    4. Economic burden: Poorer nations, with weak waste management, face disproportionate costs of uncontrolled plastic dumping.

    What Global Remedies Are Being Proposed?

    1. Legally binding agreement: In 2022, all 193 UN member states pledged at UNEA-5 to negotiate an international treaty to end plastic pollution.
    2. UNEP target: Ambition to cut plastic waste by 80% in two decades through innovation, design, and recycling.
    3. Reduce single-use plastics: Phasing out unnecessary items made from petrochemical feedstock is urgent.
    4. Extended Producer Responsibility (EPR): Holding manufacturers accountable through deposit refunds, landfill taxes, and pay-as-you-throw systems.
    5. Recycling revolution: Currently, only 6% of plastics come from recycled sources. Scaling this up requires technology and market incentives.

    What Role Do Individuals and Media Play?

    1. Greener alternatives: Shifting to traditional, reusable products and eco-friendly materials.
    2. Awareness campaigns: Media’s power in shaping consumer habits and pressuring governments is significant.
    3. Behavioural change: Collective reduction in consumption is as important as systemic reform.

    Conclusion

    Plastic pollution exemplifies the contradictions of modern development—where convenience has bred crisis. The data suggests humanity stands at a civilisational crossroads: either continue unsustainable consumption or pivot towards circular, sustainable economies. For India, with its population, coastline, and developmental challenges, the issue is not peripheral but central to environmental governance, climate action, and public health.

    UPSC Relevance

    [UPSC 2023] What is oil pollution? What are its impacts on the marine ecosystem? In what way is oil pollution particularly harmful for a country like India?

    Linkage: Plastic and oil pollution are both marine pollutants of petrochemical origin, threatening biodiversity, fisheries, and coastal livelihoods. Like oil, plastics enter oceans in massive quantities (11 MT annually), fragmenting into microplastics that disrupt ecosystems. For India, with a long coastline and dependence on marine resources, the risks of livelihood loss, food insecurity, and ecological imbalance are particularly acute.

  • In news: Sahyadri Tiger Reserve

    Why in the News?

    The Union Environment Ministry has approved the capture and translocation of eight tigers from Tadoba-Andhari and Pench reserves to the Sahyadri Tiger Reserve (STR) in western Maharashtra.

    In news: Sahyadri Tiger Reserve

    About Sahyadri Tiger Reserve (STR):

    • Overview: Situated in the Sahyadri Range, Western Ghats (Maharashtra), spanning districts of Satara, Sangli, Kolhapur, Ratnagiri.
    • Status: Declared Tiger Reserve (2010); part of UNESCO Western Ghats World Heritage Site (2012).
    • Geography: Dominated by Shivsagar (Koyna) and Vasant Sagar (Warana) reservoirs.
    • Vegetation: Moist evergreen, semi-evergreen, moist & dry deciduous forests; endemic trees like karvi, bamboo, Terminalia, Emblica.
    • Fauna: Bengal tiger, leopard, dhole, gaur, antelopes, mouse deer, giant squirrel. Birds include hornbills, vultures, river tern.
    • Tiger Status: Tigers absent for years; 5–9 present since 2018 (as per camera trap evidence).
    • Corridor Linkages: Connected to Radhanagari WLS (north) and Anshi–Dandeli TR (south, Karnataka), forming a key Western Ghats corridor.
    • Ecological Role: Secures catchments of Koyna & Warna rivers, crucial for farming and livelihoods.

    Need for Tiger translocation:

    • Prey base: Reserve has prey-rich habitat but lacks a stable breeding tiger population.
    • Other benefits: Prevents local extinction, strengthens corridor connectivity, supports Project Tiger, conserves biodiversity, and secures river watersheds.
    [UPSC 2017] From the ecological point of view, which one of the following assumes importance in being a good link between the Eastern Ghats and the Western Ghats?

    Options: (a) Sathyamangalam Tiger Reserve* (b) Nallamala Forest (c) Nagarhole National Park (d) Seshachalam Biosphere Reserve

     

  • BS-VII Emission Norms

    Why in the News?

    To align India’s automobile sector with global standards, the government is planning to introduce BS VII emission norms by 2026-27.

    About BS7 Norms:

    • Overview: India’s equivalent of Euro 7 emission standards, aimed at reducing vehicular pollution and aligning with global benchmarks.
    • Coverage: Applies uniformly to cars, vans, buses, trucks, petrol, diesel, hybrid, and electric vehicles.
    • On-Board Monitoring (OBM): New system to monitor tailpipe emissions in real time, covering NOx, ammonia, PM, engine gases.
    • Non-Exhaust Regulation: First-time regulation of brake dust (PM) and tyre microplastics.
    • EV Standards: Introduces battery safety, durability, and longevity index to lower raw material use and build consumer confidence.
    • Digital Safeguards: Ensures vehicles are not tampered with and remain within emission limits.
    • Testing Scope: Expands checks to real driving conditions beyond lab-based cycles.

    Key Differences: BS6 vs BS7

    • OBD vs OBM: BS6 used On-Board Diagnostics (OBD); BS7 brings OBM for direct emission monitoring.
    • NOx Standards: BS6 allowed 60 mg/km petrol, 80 mg/km diesel; BS7 sets uniform 60 mg/km.
    • Coverage: BS6 regulated exhaust only; BS7 adds non-exhaust (brakes, tyres).
    • EV Inclusion: BS6 ignored EVs; BS7 regulates battery life, safety, and replacement cycles.
    • Testing: BS6 relied on defined test cycles; BS7 uses broader real-world conditions.
    • Technology Push: BS7 compels automakers towards advanced emission-control systems and turbo, direct-injection engines.
    • Cost Factor: BS7 compliance raises vehicle costs; some older models may be discontinued.

    History of Emission Norms in India:

    Year / Period Key Development
    1991 Mass emission norms introduced for petrol vehicles.
    1992 Mass emission norms introduced for diesel vehicles.
    April 1995 Mandatory catalytic converters in new petrol cars in Delhi, Mumbai, Kolkata, Chennai; unleaded petrol (ULP) introduced.
    2000 Introduction of Euro I equivalent “India 2000” norms for passenger and commercial vehicles; stricter norms for two-wheelers.
    2001 Euro II equivalent Bharat Stage II (BS II) norms introduced in Delhi, Mumbai, Chennai, Kolkata.
    August 2002 First Auto Fuel Policy announced, outlining emission and fuel roadmap up to 2010.
    April 2005 Bharat Stage III (BS III) norms implemented in 13 metro cities; rest of India continued with BS II.
    April 2010 Bharat Stage IV (BS IV) implemented in 13 metro cities; rest of India adopted BS III.
    October 2014 BS IV extended to 20 more cities.
    2013 Auto Fuel Policy 2025 submitted to MoPNG (Ministry of Petroleum & Natural Gas), outlining roadmap up to 2025.
    April 2017 Nationwide implementation of BS IV.
    April 2020 Direct leap to BS VI (skipping BS V) due to severe pollution in Delhi NCR.
    Upcoming (BS VII) To be aligned with Euro 7 standards: stricter norms, On-Board Monitoring (OBM), coverage of brake & tyre emissions, and EV battery standards.

     

    [UPSC 2004] Consider the following statements:

    1. The Oil Pool Account of Government of India was dismantled with effect from 1-4-2002.

    2. Subsidies on PDS kerosene and domestic LPG are borne by Consolidated Fund of India.

    3. An expert committee headed by Dr. R.A. Mashelkar to formulate a national auto fuel policy recommended that Bharat Stage-II Emission Norms should be applied throughout the country by 1 April, 2004.

    Which of these statements given above are correct?

    Options: (a) 1 and 2 (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3*

     

  • Researchers develop Red Ivy Plant-Based Wound-Healing Pad

    Why in the News?

    Researchers at JNTBGRI has developed a multifunctional wound-healing pad using nanomaterials, inspired by the red ivy plant (Strobilanthes alternata), traditionally used in folk medicine.

    About the Red Ivy Plant:

    • Overview: Strobilanthes alternata, locally called murikooti pacha, belonging to the Acanthaceae family.
    • Habitat: Found abundantly in tropical regions, including India.
    • Traditional Use: Used in folk medicine for treating cuts and wounds.
    • Scientific Discovery: JNTBGRI, Palode isolated acteoside, a natural bioactive compound, for the first time in this plant.
    • Therapeutic Use: Acteoside, known elsewhere for medicinal activity, showed high wound-healing efficacy at 0.2% concentration in red ivy.

    Features of the Wound-Healing Pad:

    • Design: India’s first multifunctional herbal wound dressing pad, combining traditional knowledge with nanotechnology.
    • Components: Electro-spun nanofiber layer (biodegradable, porous, antimicrobial barrier); Acteoside + neomycin sulfate blend (healing and infection control); Sodium alginate sponge (absorbs exudates); Activated carbon layer (controls odour).
    • Significance: Affordable, scalable, and a model of herbal medicine integrated with modern nanotech innovation.
    [UPSC 2021] Which one of the following is used in preparing a natural mosquito repellent?

    Options:

    (a) Congress grass (b) Elephant grass (c) Lemongrass* (d) Nut grass

     

  • Vultures and Pandemic Prevention

    Why in the News?

    Vultures, vital for carcass disposal and disease control, are key to pandemic preparedness.

    About Vulture Species in India:

    • Overview: Vultures are among 22 global species of large scavenger birds, found mostly in tropics and subtropics.
    • Ecological Role: Serve as nature’s garbage collectors, preventing disease spread and maintaining balance in ecosystems.
    • Indian Diversity: India hosts 9 species — Oriental white-backed, Long-billed, Slender-billed, Himalayan, Red-headed, Egyptian, Bearded, Cinereous, and Eurasian Griffon.

    Vultures and Pandemic Prevention

    Distribution and Population Trends:

    • Historic Abundance: In the 1980s, India had over 40 million vultures, often in large groups near carcass dumps.
    • Population Crash: Since the 1990s, numbers have declined by over 95%, mainly due to diclofenac poisoning from veterinary use.
    • Flyway Connection: Vultures are part of the Central Asian Flyway (CAF), linking breeding sites in Central Asia with South Asia’s wintering zones.
    • Global Relevance: The CAF spans 30+ countries, making vulture conservation a regional and international public health concern.

    Vultures and Pandemic Preparedness:

    • Carcass Disposal: By consuming dead animals, vultures stop spread of pathogens such as anthrax, Clostridium botulinum, rabies.
    • Bio-Monitor Role: As first responders at carcasses, they act as natural surveillance systems, reducing risks of zoonotic spillover.
    • Conservation Gap: Protection of vultures is rarely included in One Health strategies, despite being low-cost compared to pandemic response.
    • Community Involvement: Local communities coexisting with vultures can aid in awareness, conservation, and disease monitoring, but remain underutilised.
    [UPSC 2012] Vultures which used to be very common in Indian countryside some years ago are rarely seen nowadays. This is attributed to:

    (a) the destruction of their nesting sites by new invasive species disease among them

    (b) a drug used by cattle owners for treating their diseased cattle persistent and fatal*

    (c) scarcity of food available to them

    (d) a widespread, persistent and fatal disease among them

     

  • Swachh Vayu Survekshan, 2025

    Why in the News?

    Indore, already recognized as the cleanest city in India, has topped the list of million-plus population cities in the Swachh Vayu Survekshan 2025.

    Swachh Vayu Survekshan, 2025

    About Swachh Vayu Survekshan (SVS), 2025:

    • Overview: Annual survey by the Ministry of Environment, Forest and Climate Change (MoEFCC) under the National Clean Air Programme (NCAP).
    • Objective: Promotes healthy competition among cities and accelerates implementation of air quality measures.
    • Coverage: Includes 130 cities, grouped into 3 categories: million-plus population, 3–10 lakh population, and under 3 lakh population.
    • Parameters: Cities assessed on 8 factors such as road dust mitigation, solid waste management, vehicular emission control, industrial emission control, construction and demolition waste handling, public awareness, and particulate matter (PM10/PM2.5) reduction.
    • Methodology: Uses a multi-tier evaluation focusing on both on-ground actions and measurable outcomes.

    Key Findings of SVS, 2025:

    • Top Performer: Indore ranked 1st among million-plus cities, regaining its position after slipping to 6th in 2024. It had also topped in 2023, while Lucknow topped the inaugural edition in 2022.
    • Other Million-Plus Rankings: Jabalpur 2nd, Agra and Surat 3rd, Navi Mumbai 4th, Kanpur 5th, Bhopal 6th, Allahabad 7th, Chandigarh 8th, Ahmedabad–Pune–Nagpur 10th, Varanasi and Raipur 11th, Lucknow 15th, Hyderabad 22nd, Mumbai 25th, Jaipur 26th, Delhi 32nd, Bengaluru 36th, Kolkata 38th, Chennai 41st.
    • 3–10 Lakh Cities: Amravati 1st, Jhansi and Moradabad joint 2nd, Alwar 3rd.
    • Under-3 Lakh Cities: Dewas 1st, Parwanoo 2nd, Angul 3rd.
    • Air Quality Data: Indore recorded PM10 at 83 μg/m³ in 2024–25, slightly higher than 82 μg/m³ in 2017–18. Cities like Chennai (58 μg/m³), Varanasi (59 μg/m³), Bengaluru (68 μg/m³), and Hyderabad (81 μg/m³) showed lower PM10 levels than Indore.
    • Overall Trends: 103 of 130 cities reduced PM10 since 2017–18. 64 cities achieved a 20% reduction, while 25 cities achieved a 40% reduction. Only 22 cities met the national standard of ≤60 μg/m³, with Chennai the only metro (58 μg/m³). Among metros, Mumbai recorded the highest decline (44%), followed by Kolkata (37%), Hyderabad (26%), Bengaluru (26%), Delhi (15%), and Chennai (12%).
    [UPSC 2022] In the context of WHO Air Quality Guidelines, consider the following statements:

    1. The 24-hour mean of PM 2.5 should not exceed 15 μg/m3 and annual mean of PM 2.5 should not exceed 5 μg/m3.

    2. In a year, the highest levels of ozone pollution occur during the periods of inclement weather.

    3. PM 10 can penetrate the long barrier and enter the bloodstream.

    4. Excessive ozone in the air can trigger asthma.

    Which of the statements given above are correct?

    Options: (a) 1,3 and 4 (b) 1 and 4 only* (c) 2,3 and 4 (d) 1 and 2 only

     

  • The making of an ecological disaster in the Nicobar

    Introduction

    The Great Nicobar Island Project, with an estimated expenditure of ₹72,000 crore, has sparked unprecedented controversy. Instead of strengthening India’s ecological security and inclusive growth, the project threatens to uproot indigenous communities such as the Nicobarese and the Shompen, destroy one of the world’s richest biodiversity hotspots, and expose the island to severe natural disaster risks. By bypassing constitutional bodies, statutory protections, and scientific warnings, the project raises fundamental questions about governance, justice, and sustainability in India’s developmental trajectory.

    Uprooting Tribal Communities

    1. Nicobarese displacement: The project site overlaps with ancestral villages of the Nicobarese, already displaced once by the 2004 tsunami. Their hope of return will now be permanently extinguished.
    2. Shompen threat: The Shompen, classified as a Particularly Vulnerable Tribal Group (PVTG), face cultural and ecological extinction as their reserve land is denotified and forests destroyed.
    3. Violation of tribal safeguards: Article 338A mandates consultation with the National Commission for Scheduled Tribes, which was bypassed. The Tribal Council’s objections were ignored after being “rushed” into signing a no-objection letter, later revoked.

    Mockery of Legal and Regulatory Safeguards

    1. Social Impact Assessment failure: The 2013 Act on Land Acquisition and Rehabilitation excluded Nicobarese and Shompen from consideration, denying them stakeholder status.
    2. Forest Rights Act ignored: The Shompen’s authority to regulate and protect forests was bypassed.
    3. Constitutional neglect: Bodies like NCST and local tribal councils were side-lined, undermining democratic accountability.

    The Farce of Compensatory Afforestation

    1. Massive tree felling: The Ministry projects 8.5 lakh trees may be cut, but independent estimates put the figure between 32–58 lakh.
    2. Afforestation mismatch: Compensatory afforestation is planned in Haryana, thousands of kilometres away, with a completely different ecology.
    3. Mining contradiction: A quarter of this afforestation land has been auctioned for mining, nullifying the mitigation strategy.
    4. CRZ violation: Port site falls under CRZ 1A, which prohibits construction due to turtle nesting sites and coral reefs.

    Ecological and Wildlife Concerns

    1. Nicobar long-tailed macaque: Primatologists’ warnings on its survival risks were ignored.
    2. Sea turtle nesting mis-assessed: Surveys were conducted off-season, compromising accuracy.
    3. Dugong impact underestimated: Drone-based surveys only covered shallow waters.
    4. Biased assessments: Reports were allegedly conducted under duress, undermining credibility.

    A Disaster-Prone Location

    1. Tsunami precedent: In 2004, the island subsided by 15 feet.
    2. Seismic zone risk: A 6.2 magnitude earthquake in July 2025 reinforced its vulnerability.
    3. Jeopardising investment: Infrastructure and lives face catastrophic risk from earthquakes and tsunamis.

    Conclusion

    The Great Nicobar Project symbolizes an ecological and humanitarian misadventure where short-term ambitions eclipse constitutional morality, environmental prudence, and tribal justice. The survival of the Nicobarese and Shompen, along with an irreplaceable ecosystem, hangs in the balance. True development must integrate ecological sustainability and social justice rather than sacrifice them at the altar of misplaced mega-infrastructure.

    Value Addition

    Way Forward

    • Inclusive Development with Tribal Consent
      • Ensure free, prior, and informed consent of Nicobarese and Shompen communities in line with the Niyamgiri judgment (2013).
      • Empower tribal councils in decision-making as mandated by the Forest Rights Act (2006).
    • Strengthening Legal and Institutional Safeguards
      • Consult the National Commission for Scheduled Tribes (NCST) and respect constitutional provisions under Article 338A.
      • Strengthen Social Impact Assessments with participation of affected communities.
    • Rethinking Compensatory Afforestation
      • Undertake afforestation within island ecosystems, not in distant states like Haryana.
      • Promote ecosystem restoration rather than mere plantation drives.
    • Ecologically Sensitive Area Protection
      • Enforce CRZ 1A norms protecting turtle nesting sites, coral reefs, and coastal biodiversity.
      • Recognise Great Nicobar as an Ecologically Sensitive Zone (ESZ) under Environment Protection Act.
    • Disaster-Resilient Planning
      • Recognise that Great Nicobar lies in Seismic Zone V and redesign infrastructure accordingly.
      • Adopt a low-impact development model suited for fragile ecosystems (eco-tourism, research hubs, small-scale renewable energy).
    • Alternative Growth Models
      • Focus on sustainable livelihoods for locals (fisheries, forest produce, heritage tourism).
      • Leverage the island’s location for strategic security through minimal-impact naval installations, avoiding large-scale civilian displacement.

    PYQ Relevance

    [UPSC 2017] ‘Climate Change’ is a global problem. How India will be affected by climate change? How Himalayan and coastal states of India will be affected by climate change?

    Linkage: The Great Nicobar Project directly links to this PYQ as it illustrates how climate change impacts combine with ill-planned development to heighten risks. Rising sea levels and intensifying cyclones threaten India’s coastal states, while Great Nicobar, lying in a seismically active and tsunami-prone zone, showcases the compounded vulnerability of fragile ecosystems and communities. Thus, it exemplifies how coastal regions face existential risks when climate change interacts with unsustainable projects.

  • Why Punjab keeps flooding

    Introduction

    Punjab, often called the “food bowl of India,” is paradoxically one of the most flood-prone states in the country. Drained by three perennial rivers, the Ravi, Beas, and Sutlej, along with seasonal tributaries and hill streams, Punjab has historically thrived on its fertile floodplains. Yet, the very rivers that make its land abundant also bring recurring devastation. The 2025 floods, among the worst in recent memory, have once again underlined the dual challenge of geography and governance. With 3.8 lakh people affected, 11.7 lakh hectares of farmland destroyed, and 43 lives lost, the floods highlight not just natural vulnerability but also systemic mismanagement.

    Why Punjab’s Floods Are Back in the Spotlight

    Punjab is currently experiencing one of the most destructive floods in decades, with unprecedented rainfall in Himachal Pradesh, J&K, and Punjab itself swelling rivers beyond capacity. What makes this year’s floods significant is the scale: all 23 districts have been declared flood-hit, and the breach of Madhopur barrage gates has worsened devastation. While heavy rains are not new, institutional failures, especially in dam management by the Bhakra Beas Management Board (BBMB), and delayed warnings have amplified the crisis, making the situation worse than previous floods of 1955, 1988, 1993, 2019, and 2023.

    Rivers as Both Boon and Bane

    1. Three perennial rivers – Ravi, Beas, and Sutlej traverse Punjab, carrying immense alluvium and making the state highly fertile.
    2. Seasonal rivers and choes – Rivers like Ghaggar and hill streams add to Punjab’s complex hydrology.
    3. Agricultural abundance – Punjab produces nearly 20% of India’s wheat and 12% of its rice, despite occupying only 1.5% of landmass.
    4. Recurring floods – Heavy monsoons, particularly in upstream catchments (Himachal and J&K), frequently overwhelm dhussi bundhs (earthen embankments), as seen in 1955, 1988, 1993, 2019, 2023, and now 2025.

    Why Do Dams Intensify Flooding

    1. Upstream dams – Bhakra (Sutlej), Pong (Beas), and Thein/Ranjit Sagar (Ravi) play a central role in regulating river flow.
    2. Rule curve dilemma – The BBMB maintains high reservoir levels in July–August for irrigation and power, leaving little cushion for sudden heavy inflows.
    3. Sudden releases – Emergency releases during extreme rainfall cause flash floods downstream, as seen with Pong dam’s unprecedented 20% higher inflows than 2023.
    4. Governance issue – Punjab feels marginalized in BBMB decisions, especially after 2022 rule changes allowing all-India officers to head the Board.

    Human Factors Worsening the Crisis

    1. Barrage failures – On August 26, two gates of the Madhopur barrage collapsed after Thein dam releases, flooding Pathankot, Gurdaspur, and Amritsar.
    2. Weak embankments – Illegal mining has eroded dhussi bundhs, reducing their ability to withstand pressure.
    3. Poor coordination – Lack of communication between upstream and downstream departments delayed gate operations.
    4. Neglected desilting – Experts estimate that ₹4,000–5,000 crore investment in desilting and embankment strengthening could prevent far greater losses.

    Larger Governance Failures

    1. BBMB’s narrow mandate – Prioritizes irrigation and power, neglecting flood management.
    2. Delayed warnings – Punjab officials allege sudden releases with little time for evacuation.
    3. Political tensions – Punjab’s Water Resources Minister accused the Centre of ignoring Punjab’s plight.
    4. Environmentalists’ view – Experts stress that flood cushions, transparent decision-making, and scientific dam operations are essential to prevent repeated tragedies.

    Conclusion

    Punjab’s floods are not just a story of heavy rain but of fragile governance structures. Nature may trigger floods, but poor dam management, illegal mining, weak embankments, and lack of timely communication convert them into disasters. Strengthening embankments, enforcing transparent dam operations, and giving Punjab a greater role in BBMB are urgent needs. Unless governance catches up with geography, Punjab will continue to oscillate between abundance and devastation.

    UPSC Relevance

    [UPSC 2024] Flooding in urban areas is an emerging climate-induced disaster. Discuss the causes of this disaster. Mention the features of two such major floods in the last two decades in India. Describe the policies and frameworks in India that aim at tackling such floods.

    Linkage: The Punjab floods of 2025 mirror the challenges of urban floods like Mumbai (2005) and Chennai (2015), where extreme rainfall combined with poor drainage, unplanned construction, and dam mismanagement turned heavy rain into catastrophe. Frameworks like the Disaster Management Act, 2005, the Sendai Framework (2015–30), and National Disaster Management Plan (2019) provide guiding structures, yet governance lapses and weak local preparedness continue to make both rural and urban areas equally vulnerable to flooding.