In these equations, PF and Pc denote the prices of commercial timber and carbon, respectively; v(t) denotes the volume of commercial timber on the stand at age t and vʹ(t) denotes the first derivative of the growth function with respect to time; α represents the carbon in a unit volume of timber; β is the proportion of carbon in timber that is transferred to wood product sinks—referred to as the ‘. [...] 8 | P a g e In addition to the explanations of the variables and parameters provided earlier, here Ct refers to the carbon stored in living and dead biomass at stand age t and ? ? Cs refers to the carbon sequestered in the living plus dead biomass carbon sinks between stand ages s–1 and s, and t is the age when the stand is harvested. [...] The third term constitutes the value of the CO2 that is potentially released to the atmosphere—it is a cost of harvesting trees; however, some of the carbon is subsequently shifted to other carbon pools. [...] To calculate the carbon sequestered over multiple rotations, we employ the carbon dioxide removals associated with the optimal rotation age and employ the following equation to derive the total carbon at the current time: (9) ? ? ? ? ? ? = (1+? ? ? ? ? ? ) ? ? ? ? , (1+? ? ? ? )? ? −1 where n refers to the (optimal) rotation age and Cn is the carbon removed at age n but brought to the present b. [...] This depends on the quality of the timber on a site and the relationship between the price of carbon and the value of the timber.
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- Pages
- 32
- Published in
- Canada
