Mangrove forest cover in Tamil Nadu in 2024; it nearly doubled from 4,500 ha in 2021. The increase can be attributed to both new mangrove plantations and the preservation of existing ones across several districts, according to a report by the Centre for Climate Change and Disaster Management, Anna University.

Area of new mangrove plantations contributing to total growth, making up 40.1% of the total increase as part of Tamil Nadu’s restoration strategy.

Natural mangrove regeneration area, highlighting the ecosystem’s self-recovery across the state, accounting for 59.9% of the growth.

Mangrove cover in Tiruvarur district — the largest mangrove area in the state as of 2024.

Portion of Tiruvarur's mangrove area from plantations.

Portion of Tiruvarur's mangrove area from natural regeneration.

Mangrove area in Thanjavur district, including both plantations and natural growth.

Portion of Thanjavur's mangrove area constituted by plantations, illustrating targeted restoration.

Portion of Thanjavur's mangrove area from natural forest growth.

Carbon stock density in Cuddalore’s mangroves — the highest per-hectare figure among districts.

Carbon stock density in Tiruvarur’s mangrove forests.

Carbon stock density in Thanjavur’s mangroves.

Carbon stock density in Tiruvallur’s mangroves, indicating lower carbon accumulation.

Carbon stock density in Villupuram’s mangroves — the lowest among listed districts.

Total mangrove cover in Chennai over the past decade, representing just 1.5% of the state’s total.

Increase in Chennai’s mangrove area between 2021–2024 — minimal growth compared to the state average.