SYLLABUS
GS-3: Environment Conservation, environmental pollution and degradation, environmental impact assessment.
Context: The UNESCO People and Nature Report presents a stark warning that nearly 90% of UNESCO-designated sites are under high environmental stress, despite their global protection status.
About the Report:
The Report is the first assessment across all UNESCO categories such as World Heritage Sites, Biosphere Reserves and Global Geoparks.
- It brings together a single network of more than 2,260 sites covering over 13 million sq km, which is larger than the combined area of China and India.
- Most critically, about 98% of these sites are already experiencing climate change impacts, indicating that no major ecological region is untouched by global warming.
- Every 1°C of warming avoided could halve the number of sites exposed to major disruption by the end of the century.
- The report highlights a key global governance challenge, even the most protected ecosystems are increasingly vulnerable to climate and human pressure
Key Findings of People and Nature Report
- Climate Change as the Dominant Pressure: Climate change has emerged as the most widespread threat, with 98% of UNESCO sites experiencing at least one extreme climate event since 2000.
- These include heatwaves, glacier retreat, sea-level rise, coral bleaching, droughts, floods, and wildfires.
- A key finding is the sharp rise in extreme weather events such as droughts, floods, and wildfires, which have increased by 40% in the past decade, reflecting growing climate instability.
- Cryosphere loss is also severe, with over 2,500 gigatonnes of glacier ice lost since 2000 and mountain glaciers declining by around 9% in volume. Ocean acidification is further weakening marine ecosystems and coral reefs.
- Land-Use Change and Ecosystem Degradation: Alongside climate change, human pressures are reshaping these protected areas.
- Wildfires have become the leading driver of forest change in World Heritage sites, surpassing logging and agricultural expansion.
- Infrastructure development such as roads, railways, and energy projects is fragmenting ecosystems and reducing ecological connectivity.
- Since 2000, over 300,000 sq km of forest cover has been lost, while invasive species are now present in more than 80% of UNESCO sites.
- Risk of Ecological Tipping Points: The report warns that more than 25% of UNESCO sites may cross irreversible ecological tipping points by 2050.
- Coral reef systems face the risk of functional collapse due to repeated bleaching events, while forest ecosystems may shift from carbon sinks to carbon sources.
- Freshwater ecosystems are also under stress, with over 300 sites experiencing chronic water scarcity.
- Biodiversity and Global Significance: Despite rising pressures, UNESCO sites remain critical biodiversity strongholds.
- They host over 60% of globally mapped species, including a large share of endemic and endangered species.
- Habitat degradation within these sites is significantly lower than in surrounding landscapes, highlighting their effectiveness as conservation refuges.
- Climate Regulation and Human Dependence: UNESCO sites play a vital role in global climate stability. They absorb nearly 700 million tonnes of CO₂ annually and store around 240 gigatonnes of carbon in forests, soils, and coastal ecosystems.
- They also support nearly 900 million people (about 10% of the global population) and contribute close to 10% of global GDP, mainly through tourism, agriculture, and ecosystem-based livelihoods.
- Ecosystem services such as freshwater supply, soil fertility, and pollination are essential for global food security, with pollination alone valued at around $500 billion annually.
- UNESCO initiatives like “Women for Bees” support sustainable beekeeping, including in India’s Western Ghats.
