Accounting for density reduction and structural loss in standing dead trees: Implications for forest biomass and carbon stock estimates in the United States

Table 2 Density reduction factors by species [9] and preliminary SLA for each decay class by tree component for all tree species in the FIADB.

Decay class	Density reduction factors		Structural loss adjustment factors
	Quaking aspen	Douglas-fir	Top	Bark	Bole	Stump	Roots
1	0.970	0.892	1.00	0.92	1.00	1.00	1.00
2	0.750	0.831	0.50	0.66	1.00	1.00	0.95
3	0.540	0.591	0.20	0.39	1.00	1.00	0.80
4	0.613	0.433	0.10	0.21	1.00	1.00	0.65
5	0.613	0.433	0.00	0.00	1.00	1.00	0.50

Note: values represent the proportion of original (live-tree equivalent) component biomass retained at each decay class.

ISSN: 1750-0680