<![CDATA[Mangrove ecosystems play a crucial role in climate change mitigation by absorbing and storing carbon in biomass and sediments. This study aimed to estimate biomass carbon stocks, sediment carbon, CO₂ sequestration, and the economic value of mangrove carbon. The research was conducted in May 2025 in Bengkalis District, Bengkalis Regency. A survey method was employed, utilizing data on mangrove species composition, tree density, and diameter at breast height (DBH). The results identified six mangrove species: Rhizophora apiculata, R. mucronata, Avicennia alba, Sonneratia alba, Xylocarpus granatum, and Excoecaria agallocha. The mangrove ecosystem in Bengkalis District exhibited an average aboveground tree carbon stock of 87.75 t ha⁻¹, root carbon stock of 36.77 t ha⁻¹, sediment carbon stock of 54.03 t ha⁻¹, and CO₂ sequestration of 456.97 t ha⁻¹. The estimated economic value of carbon was IDR 388,342,353 ha⁻¹. These findings indicate that the mangrove ecosystem in Bengkalis District has substantial potential as a carbon sink and storage system, highlighting the importance of sustainable management strategies to support climate change mitigation efforts]]>
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