I am working on a Biochar for Dry land agriculture and Agro forestry development which requires carbon stock analysis in below and above ground biomass.
Allometric equation can be used for biomass estimation as i have no experience further and you can get the equation from the FRI or SAC .. This is the best way to estimate biomass without doing destruction.
Non destructive Carbon Stock estimation is possible by the use of regression equation (allometric equations) for estimation of tree bole biomass or volume. (For different species, equations has been developed and you may get it from FSI publications as well as from research papers). After getting the tree bole biomass or volume, you may use the conversion and expansion factors to know the rest biomass or volume of tree. (This value (ranging from 0.57-0.72 roughly)you may get from publish literature as it varies w.r.t location as well as species; if not available you may get some default value). These two (bole volume + other than bole volume) will comprise the above ground volume or biomass of whole tree. This total above ground tree biomass or volume may be used to estimate below ground biomass or volume based on root shoot ratio value. (The root shoot ratio (ranging from 0.19-0.26 roughly) may be obtained again from published literature mainly on ecological researches). These three in totality would be the total tree biomass or volume and then you may use specific gravity function from Rajput Book (FRI Publication) as the case may be. Then the total biomass will be converted to carbon based on the proportion of carbon (ranging from 40-50% roughly)
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