Is there data regarding the specific density of wood, height and dbh of the tree?
The biomass carbon estimation of any tree is based on the biomass of the tree. The biomass of the tree can be estimated through Allometric equation. The equation may be available for your region otherwise you can use the equation for similar region (with less precision).
For details, pl Google, India's Forest and Tree Cover: Contribution as Carbon Sink
Pl access this webpage
https://www.researchgate.net/publication/260422946_India%27s_Forest_and_Tree_Cover_Contribution_as_a_Carbon_Sink_Technical_Paper
Data India's Forest and Tree Cover: Contribution as a Carbon Sink...
Yes, Rajiv is right that estimations are pretty straight forward using allometric equations, which can be based on diameter at breast height, or tree height, or both. Allometric equations can be generic by species, but are more accurate if they are place specific. In addition to that, many common trees such as pine have a root to shoot ratio, in which the below ground biomass can be estimated in addition to the above ground biomass calculated from the allometric equation. The conversion to carbon from biomass is straightforward. In a report that I did for the Environmental Defense Fund this methodology has approximately a 15% error, depending on the quality of allometric equations that exist for the area.
Dear Dr. Pandey,
Thank you, especially for the link. Could you please tell me whether the allometric equations in the aforesaid case will be similar in Garhwal and Kumaun?
Dear Dr. Lincoln,
Thanks for your reply. I am having the data for both height and dbh. Would it be possible for you to help me out regarding the root-shoot ratio?
I can dig around a little bit for you. What species and area are you looking at? The most generic ratio across all tree is that the root mass is 2/3 of the above ground ratio (if my memory serves me correctly...we did the report about 5 years ago now).
Thanks Dr. Lincoln.
I am concerned about the exotic pine species introduced in the Kumaun region of Indian Himalayas.
The allometric equations in the aforesaid case will not be similar in Garhwal and Kumaun. However you may develop it provided you have the data (which I suppose not possible). Therefore you may use the other available one. Obviously there will some compromise with the estimates.
For root shoot ratio, you just try to see some publish literature on productivity analysis. I have seen such literature reporting above and below ground biomass way back in 2009.
The best way in estimating tree biomass of a tree is through indirect method/usi of allometric equation. They do varry. Frome species specific- these are allometric equation for particular species. e.g. aloometric equation for Eucalyptus saligna etc. There are the general equations- these also varry based n climatic condition of a region. There are equation for dry areas, wet regions etc. The choice of an equation depends whether you want to determine biomass for trees outside forest or for trees in forests. For you to use the equation, data on some tree variables are needed depending on the choice of equation. Among some of the variales nclude, tree height-direct determination is the accurate one, tree diameter at breast height (DBH), wood density-can be determined from the field or through the world wood density database
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