Table 2. Comparison of live C loss in bole (Tg C yr⁻¹) for the conterminous United States from this study and a sample of previous estimates^a.

Source	Bole C removed	Periods
Hurtt et al., 200224	92C	1980s
King et al., 200717	145C	1980s
Pacala et al., 20018	92C	1980s
Turner et al., 199512	124	1980s
Birdsey & Heath, 199525	126	1990
Heath & Smith, 200414	105	1990s
Houghton, 199913	92C	1990s
EPA, 200826	132C	2005
Williams et al., 201216	107	2005
Woodbury et al., 200715	132C	2005
Average of previous studies	115 ± 19d	—
This study + western US	104 + 24b	2002–2010

^aThe bole C loss refers to the C of sound cubic-foot volume that is assumed to have been taken off site and entrained into wood products, equal to the C of volume removed used by the previous studies.

^bWe estimated the total C loss of bole in the conterminous United States by assuming the removals in the western United States accounted for 19% of the total removals in the conterminous United States as proposed by Oswalt et al.²³.

^cThe estimates were derived from a synthesis by Williams et al.¹⁶.

^dMean estimate ± Standard error.