Dear Nilam Kondvilkar . See kindly the following useful link: https://www.ecomatcher.com/how-to-calculate-co2-sequestration/

Kindly see also the following useful link: https://www.britannica.com/technology/carbon-sequestration

Also check please the following good link: https://aambpublicoceanservice.blob.core.windows.net/oceanserviceprod/education/earthscientists/pdf/measuring-carbon-sequestration.pdf

The following link is also very useful: https://www.canterbury.ac.nz/media/documents/oexp-science/geography/community-engagement/geog-309/2019/GEOG309-19-Estimation-of-Carbon-Sequestration-Levels.pdf

For more information please visit:

https://www.ecomatcher.com/how-to-calculate-co2-sequestration/

Use this paper

https://www3.epa.gov/climatechange/Downloads/method-calculating-carbon-sequestration-trees-urban-and-suburban-settings.pdf

Divide the total stored carbon by the age of the plant species

you can try to get this report from West Bengal Forest Dept.