For the specifics, I would invite Dr. Werner Kurz, one of my colleagues, to come and explain the methodology on that calculation.
We do take into account that in Canada right now there are 14 megatonnes of carbon sequestered in the managed forest and derived wood products, but as we do those calculations, you are correct to say that we have to take into account the emissions that happen when, for instance, the mountain pine beetle goes through and destroys forests, as well as wildland forest fires, so that natural disasters are counted in that.
Then we have a modelling, called the carbon budget model, that the government and NRCan produced. It's used around the world and is in line with the United Nations requirements. As to the technical aspects of the model, I can't answer that today.