In this study carbon sequestration is modelled for units of woodland (at a subcompartment level) and is then aggregated for regions of Britain.

There is no agreed single social monetary value for carbon emissions into the atmosphere. Hence an appropriate range of social values for carbon are considered, from a review of recent literature. The carbon value is not static over time; carbon locked up today or in the near future is worth more than that sequestered in the distant future. This decline in value is quantified in our study by several different discount rates.