() Greenhouse gas shadows for a magazine and dimensional lumber chain.

Gower, S1, 1 University of Wisconsin, Madison, WI, USA

ABSTRACT- Vast quantities of wood fiber are harvested to produce wood and paper products, and a by-product is the production of greenhouse gases (GHG). Here we report the GHG life cycle analysis (LCA) for two forest product chains: a weekly (Time) and monthly (InStyle) magazine, and dimensional lumber. In this study we show (i) one ton of Time or InStyle magazines releases a net 1.17 and 1.11 t CO2-eq, respectively, with GHG emissions from the pulp and paper mills comprising 61-77% of total GHG emissions, and (ii) one ton of dimensional lumber releases a net 0.83 tCO2-eq, with transportation and distribution of dimensional lumber from the sawmill to consumer comprising 94% of the total GHG emissions. CO2 comprised greater than 99% of the total CO2-eq emissions for both product chains. Many opportunities exist to reduce GHG shadows for the magazine and dimensional lumber chains and the potential reduction in GHG emissions is similar or greater in magnitude to enhanced carbon sequestration by trees grown in elevated atmospheric CO2, emphasizing the potential contribution the industrial forest C cycle can play in forest C management.

Key words: Greenhouse Gas Shadows, Life Cycle Analysis, Dimensional Lumber, Magazines

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