Forest Carbon Sink

  • A forest carbon sink refers to forests’ ability to absorb and store more carbon dioxide (CO₂) from the atmosphere than they release, thereby helping mitigate climate change.
  • Forests act as natural carbon sinks by sequestering carbon in biomass (trees, roots, leaves), dead organic matter, and forest soils.
  • Mechanism
    • Through photosynthesis, trees absorb CO₂ and convert it into organic carbon.
    • Carbon is stored in:
      • Above-ground biomass (trunks, branches, leaves)
      • Below-ground biomass (roots)
      • Forest litter and deadwood
      • Soil organic carbon
    • Disturbances like deforestation, forest fires, or degradation can turn forests into carbon sources instead of sinks.
  • Types of forest carbon sinks
    • Natural forests: Old-growth and primary forests with long-term carbon storage capacity.
    • Plantation forests: Fast-growing species that absorb carbon rapidly but may store less carbon over the long term.
    • Agroforestry systems: Combine trees with crops or livestock, contributing to carbon sequestration.
  • Global and national relevance
    • Forests absorb roughly one-third of global anthropogenic CO₂ emissions annually.
    • Under the Paris Agreement, countries use forest carbon sinks as part of their climate mitigation strategies.
    • India’s NDC target includes creating an additional carbon sink of 2.5–3 billion tonnes of CO₂ equivalent through increased forest and tree cover.
  • Policy and governance in India
    • Linked to the National Forest Policy, Green India Mission, CAMPA, and afforestation programmes.
    • Forest carbon accounting is reported under India’s Biennial Update Reports (BURs) and National Communications to the UNFCCC.
    • Monitoring uses satellite data, forest inventories, and carbon stock assessments.
  • Importance
    • Helps slow global warming and stabilise climate systems.
    • Supports biodiversity conservation and ecosystem services.
    • Enhances soil fertility, water regulation, and livelihood opportunities for forest-dependent communities.
  • Challenges
    • Deforestation, forest degradation, and land-use change.
    • Climate-induced stresses such as droughts, pests, and forest fires.
    • Difficulties in accurate measurement, reporting, and verification of carbon stocks.
  • Way forward
    • Protect existing natural forests and prevent degradation.
    • Promote native-species afforestation and ecological restoration.
    • Integrate forest carbon goals with community participation and sustainable forest management.
About the UPSC Civil Services Examination (UPSC CSE)

The UPSC Civil Services Examination (CSE) is one of the most competitive and esteemed examinations in India, conducted by the Union Public Service Commission to recruit officers for services such as the Indian Administrative Service (IAS), Indian Police Service (IPS), Indian Foreign Service (IFS), and others. The exam comprises three stages — Prelims, Mains, and the Personality Test (Interview) — designed to test a candidate’s knowledge, aptitude, decision-making, and leadership skills.


How to Prepare Effectively for UPSC CSE

Cracking the UPSC CSE requires a deep understanding of the syllabus, consistent revision, structured answer writing, and smart test-taking strategies. The Prelims test analytical and conceptual clarity, the Mains focuses on critical thinking, articulation, and subject mastery, while the Interview assesses presence of mind, ethical judgment, and personality traits relevant to public service.

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