When to Include Biogenic Carbon in an LCA

Part 1 in comprehensive series on biogenic carbon accounting for wood products, providing overview of biogenic carbon accounting practices as defined by ISO 21930 international standards. Explains fundamental "-1 in/+1 out" accounting practice for biogenic carbon flows, definition of sustainably managed forests, and applicability to U.S. and Canadian lumber based on increasing forest carbon stocks and UNFCCC reporting. Covers when it's appropriate to include biogenic carbon in LCA studies, requirements for sustainable sourcing, and connection to certification programs. Provides scientific foundation for biogenic carbon accounting with references to EPA greenhouse gas inventories and USDA Forest Inventory Analysis data demonstrating forest sustainability.