
I am always taking the position that we should not include carbon stored in wood products as contributing to our Kyoto obligations or within forest carbon offsets and I am often challenged by others for this position. Their challenge is usually along the lines of, "But carbon in wood products is real, why not count what the atmosphere sees?" Here are some comments I made last week in D.C. to the Forest Carbon Standards Committee established by the AF&PA laying out my argument. It boils down to this: ask not just what the atmosphere sees, ask what outcome you wish to achieve!
The wood and paper industry is in the business of supplying society with products of great value to society. One of the environmental costs of this activity is that managed forests are maintained at a younger age and their carbon stocks at a lower level than would naturally occur.
Sufficient incentive already exists from the market place for the wood and paper industry to transform trees into products. What the industry needs is a financial incentive to reduce the impact of this activity on forest carbon stocks, while continuing to meet the societal product demand.
In developing carbon market incentives for forest management, we should therefore focus on increasing forest carbon stocks, not harvested wood product stocks. There is no inherent benefit of transferring carbon from the forest pool to the product pool. In fact, there are ecological costs to this transformation.
The main greenhouse gas benefit of supplying society with wood products is that they have lower embodied emissions than alternatives, especially in construction: the production of wood results in far fewer emissions than the production of steel or concrete. Placing a price on carbon will create an incentive to switch from concrete and steel to wood because of this lower emission profile. This incentive will exist without counting the carbon stored in the wood itself. This incentive should increase the demand for wood.
An increased demand for wood should create increased pressure on our forest that would exacerbate the lowering of forest carbon stocks. Let us use the forest carbon offset as a mechanism to reward forest managers and landowners that are able to meet this demand while also maintaining forest carbon stocks high or even increasing them.
These two forces pulling in different directions (price on carbon demanding more wood and an offset system rewarding more carbon in the forest) could help us find an environmentally optimal solution. Including carbon in harvested wood products in forest offset systems will reduce the impact of incentives to maintain or increase forest carbon stocks.
Implementing this approach is not a question of 'excluding' carbon in wood products from accounting; it is simply a question of making forest carbon stocks the focus of accounting and incentives.