Pichavaram Mangrove Forest Valued at Rs 2,485 Crore

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Key takeaways

A landmark ecological evaluation calculated the Total Economic Value of Tamil Nadu's Pichavaram Mangrove Forest at Rs 2,485.38 crore, which equals Rs 1.83 crore per hectare.
Mangrove sediments in Pichavaram store 251.14 tonnes of carbon/ha, substantially outpacing the 79.45 tonnes/ha stored in above-ground biomass.
The 2024 IUCN Red List of Ecosystems warns that 50% of global mangrove ecosystems face an immediate risk of collapse.
Designated as an international Ramsar Wetland in 2022, Pichavaram features 4,400 canals that form a vital coastal bio-shield.

A new ecological study calculated the Total Economic Value of Tamil Nadu's Pichavaram Mangrove Forest at Rs 2,485.38 crore, highlighting its vital role in nature balance and climate regulation.

The total worth of this ecosystem comes to Rs 1.83 crore per hectare, which measures hidden nature benefits usually ignored in city planning.
Soil organic carbon makes up nearly half of the total economic value, showing that underground soil holds far more value than trees above ground.
Sediment layers under the mangroves store 251.14 tonnes of carbon/ha, while trees above ground store only 79.45 tonnes/ha.
The forest acts as a natural shield against destructive cyclones, saving huge disaster management expenses while producing fresh oxygen for the atmosphere.
Boating and nature tourism in this area generate steady income, protecting local jobs and supporting sustainable recreation.
The forest serves as a frontline natural defense system for disaster risk reduction and guarantees livelihood safety for local fishing communities.
The 2024 International Union for Conservation of Nature (IUCN) Red List warns that 50% of global mangrove ecosystems face the risk of total collapse.
Experts recommend adding these economic values into Natural Capital Accounting and Green GDP, while using Payment for Ecosystem Services (PES) and blue carbon funding.

This forest sits in Tamil Nadu's Cuddalore district between two major estuaries, namely the Vellar estuary in the north and the Coleroon (Kollidam) estuary in the south.
These river channels join with the Uppanar river to create the highly fertile Killai backwater complex.
It is classified as an intertidal forested wetland with a maze of 4,400 large and small canals connecting rivers to the Bay of Bengal.
The area has diverse plant life that blends mangrove plants, salt marshes, and Dry Evergreen Forests together.
Unlike dry tidal mudflats, these mangrove trees remain permanently planted in shallow brackish water throughout the year.
Main plant species include *Rhizophora apiculata* with distinctive stilt roots and *Avicennia marina* with breathing roots called pneumatophores.
The shallow waters act as a nursery for marine species like tiger prawns and mud crabs, alongside birds like the Spot-billed pelican and White-bellied sea-eagle.
The forest stops coastal soil erosion, absorbs wave impact during ocean storms, and stabilizes the shoreline naturally.
The site earned international recognition as a Ramsar Wetland in 2022 and is listed as an Important Bird and Biodiversity Area (IBA).