Hi, you may refer to the calculation of carbon sequestration by tree as follow:

https://www.broward.org/NaturalResources/ClimateChange/Documents/Calculating%20CO2%20Sequestration%20by%20Trees.pdf

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

Hi Kumar. The old fashion way is to estimate the increase of volume per hectare over time and then, based on the type of trees, crops or forest type the percentage of carbon in this volume. I would say that is the easy way. 

The prior comments are generally correct, but the documents referred to above are dated.  The general strategy I would recommend is similar, with some important caveats.

Carbon sequestration is the process of increasing C content in a pool other than the atmosphere (IPCC definition).  So, one is generally interested in measuring a change in C (e.g., inferred by 2 or more measurements).  Two steps are necessary:

First, one should use best available allometric equations for estimating aboveground tree biomass as function of easily assessed size measures, in particular stem diameter and height.  A publication giving current revised methods for tropical forests (Chave et al. 2014) is enclosed.'

Second, one needs to convert from biomass to carbon.  Older literature has often used 50% as a rough estimate, but this is an over-simplification.  We have recently compiled global data on this issue that provides for more accurate conversions (Thomas and Martin 2012 - enclosed).

Important caveats concern deviations from observed allometries and belowground carbon.  Root biomass is commonly estimated as a constant fraction of aboveground biomass, but good data remain scarce.  Increased tree root allocation might be expected in agroforestry systems compared with close-canopy forests.  Also, agricultural practices commonly result in losses of soil C.  Available allometric equations are mostly for closed-canopy forests even the in the case of aboveground biomass.

Data Carbon Content of Tree Tissues: A Synthesis

Article Improved allometric models to estimate the aboveground bioma...

I think these articles can be useful for you.

Data Acumulación de biomasa y carbono en bosques secundarios y pl...

Article Modelos para estimar la biomasa de especies nativas en plant...

Article Modelling carbon stocks and fluxes in the wood product secto...

Carbon sequestration can be measured as an increment in the plant growth and height. You have select some permanent plots and label the plants permanently and measure the GBH and height of each and every plant. After a gap of some time (it can be 6 months or a year) you have to measure the increment in GBH and height again. Convert the values into volume and use the available allometric equations for conversion into Carbon.

I assume your interest in carbon sequestration originates from your belief that carbon containing greenhouse gases have some relationship to the moderate global warming that the Earth has experienced since the end of the Little Ice Age in the late 1800s.

I suggest that you familiarize your self with data that shows there is no relationship between current atmospheric carbon containing greenhouse gas concentration and the global temperature.

Please find below a link that will take you to a monthly newsletter (Pdf; ca. 8.5 MB) with global meteorological information updated to January 2016:at:

http://www.climate4you.com/Text/Climate4you_January_2016.pdf

http://www.climate4you.com/Text/Climate4you_January_2016.pdf

For fun, several years ago, I added up how much carbon was tied up in above-ground biomass in a fully mature temperate forest, as would be expected to be found in Pre-colonial North America.  It came out to 0.5 kg of CO2 per square meter.  I then estimated how much carbon would be been in the topsoil on the prairies, and it came out to be 0.8 kg/m2, and forest soils would be similar.  These were very 'back-of-the-envelope' numbers, and not intended as anything other than a rough estimate, but it was telling to me that washing away prairie soil is worse than clear cutting a mature forest in terms of changing GHG concentrations.

Hi, from your question I am assuming that you are looking at sites that are currently not forested. As such you want to get an idea of the potential uptake. This is different to estimating the carbon stocks of an existing forest.

In most cases people use existing data from forests of similar species on similar sites (soil, climate etc). For commercial forests this often comes in the form of volume growth curves or tables derived from years of measurements. You can convert the curves to estimates of carbon using many of the methods described above

It is also possible to use physiological growth models. The results of these can be unreliable and many people remain skeptical of their use. However they are rapidly improving. Running these models is also not simple and you will require plenty of site data both for calibration and running. This may be outside the scope of your program.

Under any circumstance it will be important to monitor any new site to see how it is performing against your initial predictions. Be sure to set up a system that is more efficient for repeat measurements as it is the change you are really interested in, not just the stock: there is a fair difference in terms of measurement.

Hey kumar

I would like to add that there are now simplified tools to give estimation  and help measure emissions/ sequestration potentials.

There is one designed for this purpose, particularly to calculate from the AFLU (agriculture, forestry and land use) sectors.  It is called Ex-act, google it. i think it is a free resource

Hi Kumar R,

you already received some answers about methods to estimate carbon in stems that is easier, and roots, that is so hard. But it has other phenomenon in forest dinamic that can be considered in quantity of carbon of the forest. The productivity and deciduousness of leaves. On study below, this amount can reach up to 11 Mg.ha-1.year-1 of CO2 in semideciduous tropical forest, or 3,02 Mg.ha-1.year-1 of carbon, which will depend on the regeneration stage and forest conservation, besides the other biophysical factors.

Costa, T.C.C.C.; Viana, J.H.M.; Ribeiro, J.L. Semideciduous Seasonal Forest Production of Leaves and Deciduousness in Function of the Water Balance, LAI, and NDVI. International Journal of Ecology, Volume 2014, Article ID 923027, 15 pages

http://dx.doi.org/10.1155/2014/923027

Dear Kumar

Pl see the link.

Methodology is same. The only issue is increased precision.

Rajiv

Article Emission Removal Capability of India’s Forest and Tree Cover

Article Mitigation potential of important farm and forest trees: a p...

Article Forest biomass extraction for livestock feed and associated ...

Dear Kumar R,

Please check the following link as well-

https://www.researchgate.net/publication/281149366_Carbon_sequestration_potential_in_agroforestry_system_in_India_an_analysis_for_carbon_project

Best regards

Abhishek

Article Carbon sequestration potential in agroforestry system in Ind...

Dear Kumar

you can also see review on planted forests

Dear also go through this link

https://www.researchgate.net/post/What_is_the_appropriate_field_method_for_carbon_inventory_of_agroforestry_practice_in_hilly_region

i agree with sean