[와이즈픽] 이미 75%에서 사막화 진행 중…30년 후 예상된 지구 모습 / YTN

Summary — key scientific concepts, phenomena, findings, and mitigation approaches

Main findings and scale

• According to the World Desert Map (European Commission Joint Research Centre), desertification is already affecting about 75% of Earth’s land area; projections warn it could reach ~90% by 2050 if current trends continue.
• Desertification (definition):

  Land losing its ability to recover and becoming degraded or desert-like due to natural or human causes.

Causes

• Two main cause categories:
  • Natural (~13%): prolonged droughts and climate variability/change.
  • Anthropogenic (~87%): human activities such as excessive agricultural expansion, deforestation, pollution, and other forms of land misuse that accelerate warming and drying.
• Positive feedback: loss of vegetation reduces oxygen and increases atmospheric CO2, which amplifies global warming and further drying.

Consequences and phenomena

• Water scarcity:
  • About 2.3 billion people already face water shortages; projections indicate this may rise to roughly one-third of the global population in ~30 years.
• Loss of productive land:
  • Approximately 12 million hectares of productive land lost per year worldwide.
• Agricultural collapse and food insecurity:
  • Degraded soils reduce crop yields, increasing the risk of severe food shortages.
• Ecosystem collapse and biodiversity loss:
  • Habitat degradation forces species toward extinction.
• Regional examples:
  • The Aral Sea has shrunk to about half its former area.
  • Mongolia’s desert area reportedly expanded from ~40% to ~78% of the country; large sandstorms have caused major disasters and many deaths.
• Marine/coastal desertification:
  • Disappearance of rocky seaweed communities (“marine forests”), leaving bleached rocks.
  • The video cites ~33% of Korea’s coastal waters affected (including Jeju Island and the East Sea).

Mitigation, restoration, and policies

• International policy:
  • UN Convention to Combat Desertification (UNCCD), adopted 1994 — promotes transnational cooperation to prevent and reverse land degradation.
• Shared and implemented approaches:
  • Sharing land-management systems and new agricultural technologies internationally.
  • Greenhouse gas reduction measures to limit climate-driven drying.
  • Green space regeneration and restoration programs.
  • Coastal/marine restoration (example): South Korea’s Ministry of Oceans and Fisheries launched a marine planting program in 2013 to restore marine forests.
• Practical restoration example:
  • An international NGO dug crescent-shaped earthworks/pits in degraded land to capture surface water and increase infiltration.
  • Outcome: the site recovered to grassland within a few years, demonstrating that simple water-harvesting and land-shaping methods can be effective.

Dates and awareness

• World Day to Combat Desertification: June 17 (annual awareness day).

Researchers and sources featured

• European Commission Joint Research Centre (World Desert Map)
• UN Convention to Combat Desertification (UNCCD)
• Ministry of Oceans and Fisheries (South Korea) — marine planting program (2013)
• An unnamed international non-profit organization (restoration case using crescent-shaped pits)
• General statistics and regional examples referenced (Aral Sea, Mongolia)

(Note: no individual researchers were named in the source subtitles.)