You can quantify it by considering parameters like initial carbon contents, biomass production, carbon content, and estimation of gases emission, photosynthetic and respiration rates.

You can quantify it by considering parameters like initial carbon contents, biomass production, carbon content, and estimation of gases emission, photosynthetic and respiration rates.

You can quantify it by considering parameters like initial carbon contents, biomass production, carbon content, and estimation of gases emission, photosynthetic and respiration rates.

You can quantify it by considering parameters like initial carbon contents, biomass production, carbon content, and estimation of gases emission, photosynthetic and respiration rates.

You may go through our paper; Ranasinghe and Thimothias (2012), Estimation of carbon sequestration potential in coconut plantations under different growth conditions, Journal of National Science Foundation 40 (1), 77-93

I suspect you are interested in the net balance. You can estimate the sequestration if you have a model describing the growth rate of the crop you are interested in and know the average carbon content of the crop in question. Search for a crop model for your specific crop and adapt it to your local conditions. The best option is to develop a new, or calibrate an existing one from local measurements.

If a land use, or management change takes place than you might want to consider also the soil carbon stock changes. You can use any of a large number of soil carbon models for this purpose. Examples of a few are: DayCent, RothC, ICBM, DNDC, Yasoo. But there are many more. It is however hard to make accurate predictions of SOC evolution due to a lack of data from long lying field trials to which these models can be calibrated. Results will be site and crop specific. They depend both on crop and soil type as well as on local climate.

Soil carbon stock changes may be much larger than C stock changes in the crop over longer time periods. They are worth keeping in mind, although you can estimate the C sequestration in the crop from the inter-annual growth rate of the crop and the emissions taking place from the end use of the product.

You could check chapter 5 of the IPCC 2006 Guidelines' AFOLU volume at 

http://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/4_Volume4/V4_05_Ch5_Cropland.pdf

Hi.

You can use the following formula to perform a quick estimation of the CO2 balance.

Carbon balance = Carbon sequestered - Carbon emitted.

You can quickly estimate the amount of carbon sequestered by multiplying the amount of biomass produced by the carbon contained in the biomass and by 44/12. Use the following formula:

Carbon sequestered = Biomass produced * Carbon content * 44/12

The value of 44/12 is taken from stoichiometry (C + O2 --> CO2, 12 grams of C requires 44 grams of CO2). I understand that the average carbon content of the biomass is about 50% w/w on a dry basis.

The amount of carbon emitted is harder to estimate. You must specify wether or not you want to include the land use change emissions. You can estimate those emissions with the model developed in the attached excel file. Also, you must include the emissions derived from the use of the fossil fuels in the farm, and finally the emissions derived from the  crop residues. Check the information by the IPCC.

Notice that you must have information regarding the biomass yield, the carbon content of the biomass, and the inputs required for the biomass production.

Comparison of carbon sequestration potential in agricultural and ...

www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000200006 -- it can give you a direction