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3 September 2026

Economic valuation of Pichavaram mangroves

This report provides a specific economic valuation of an ecosystem, which serves as a valuable case study for questions on environmental economics, blue carbon, and sustainable development policies.

1 min read 2 questions 2 prelims

Notes

  • Pichavaram mangrove ecosystem in Tamil Nadu has a Total Economic Value (TEV) of ₹2,485.38 crore.
  • The per-hectare economic value of the ecosystem is estimated at ₹1.83 crore.
  • Ecosystem services provided include biodiversity conservation, fisheries productivity, coastal protection, climate regulation, blue carbon sequestration, and livelihood security.
  • Mangrove sediments are a major carbon reservoir with an average soil organic carbon stock of 251.14 tonnes per hectare.
  • The total blue carbon asset value (vegetation and soil pools combined) is estimated at ₹1,612.40 crore.
  • The study was conducted by the Institute for Social and Economic Change, Bengaluru, using primary data from 302 households across five mangrove-dependent villages.
  • Recommendations include integrating ecosystem service valuation into coastal development planning, disaster risk reduction, and developing blue carbon financing and Payment for Ecosystem Services (PES) schemes.

Questions

  1. Discuss the significance of economic valuation of coastal ecosystems like mangroves in informing sustainable development planning and climate change mitigation strategies. 150 words
    Attempt this — 150 words in 8 min
    0 / 150 words 8:00
  2. Mangrove ecosystems are critical nature-based solutions for climate adaptation and disaster risk reduction. Elaborate on the concept of 'blue carbon' and the need for institutionalizing ecosystem service valuation in India's environmental governance. 250 words
    Attempt this — 250 words in 11 min
    0 / 250 words 11:00

Prelims

  1. What does the term 'blue carbon' refer to in the context of coastal ecosystems?

  2. Which of the following is a primary ecological service provided by mangrove forests?