The First Defense barrier - Mangrove Forest is the first defense barrier to the cyclones created in the Bay of Bengal in the pre- monsoon seasons. It acts as a guard wall from the oceanic natural calamities to the entire lower Gangetic plain.
In recent financial years, mangrove plantation was not taken place in Sundarban Tiger Reserve jurisdiction.
| Year | Mangrove Plantation (Creation) |
| 2025-26 | NIL |
| Particulars | Area (in Ha) | Fund (in Lakh) |
| 1st Year Maintenance of Greening Sundarban Plantation | NIL | NIL |
| 2nd Year Maintenance of Greening Sundarban Plantation | NIL | NIL |
| 2nd Year Maintenance of Mangrove Plantation under State Development Scheme | NIL | NIL |
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