Mangrove Planting in Chennai's Coastline

Summary of Mangrove Restoration Efforts in Tamil Nadu

Context: The Tamil Nadu Forest Department has initiated a major project to restore mangrove ecosystems along the Buckingham Canal in Chennai, with a total planting of 20,000 mangrove seedlings across 20 hectares for the 2025–26 cycle. This is part of a broader strategy to enhance climate resilience and establish a green coastal buffer.

Key Initiatives:

1. Tidal Flow Management:

   • A “fishbone” canal system has been created which features:
     • 8 main fishbone canals
     • 8 feeder canals
     • 186 distribution channels
   • This system supports saline water circulation necessary for mangrove growth.

2. Collaboration with Private Sector:

   • The project has been supported by ICICI Bank under its Corporate Social Responsibility (CSR) programme.

3. Phased Approach:

   • Phase 1 (2024–25): Plantation of 12,500 mangrove seedlings of six species along with 2,500 associated coastal species.

     • Introduced species: Rhizophora mucronata, Bruguiera cylindrica, Avicennia marina, Aegiceras corniculatum, Excoecaria agallocha, Acanthus ilicifolius.

   • Phase 2: An additional 5,000 mangrove saplings of various species planted at Battle of Adyar Island on the estuary of the Adyar River.

   • Latest Phase: Involves planting of the current 20,000 seedlings, including species such as Avicennia marina, Avicennia officinalis, Rhizophora mucronata, Rhizophora apiculata, and Excoecaria agallocha.

Environmental Importance:

• The mangrove restoration aims to:
  • Protect the shoreline and nurture biodiversity.
  • Strengthen Chennai’s resilience against cyclones and rising sea levels.

Judicial and Regulatory Approvals:

• The Forest Department ensured compliance by securing necessary permissions from the Water Resources Department prior to commencing the plantation activities.

Conclusion: These initiatives represent a significant effort in environmental restoration and climate change adaptation for Chennai, emphasizing the critical role of mangroves in coastal protection and biodiversity support.