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Publications & Products

Carbon in United States Forests and Wood Products, 1987-1997: State-by-State Estimates
by Richard A. Birdsey & George M. Lewis

Oregon Estimate for 1987-1997

Table 1. Area by land class (1000 ac).
Land class	1987	1992	1997	Average Annual Change
				1987-1992	1992-1997	1987-1997
Timberland	22,801	23,275	23,749	95	95	95
Other forest land	4,049	3,769	3,489	-56	-56	-56
Reserved timberland	1,923	2,203	2,482	56	56	56
TOTAL	28,773	29,247	29,720	95	95	95

Table 2. Area of forest land by forest type (1000 ac).
Forest type	1987	1992	1997	Average Annual Change
				1987-1992	1992-1997	1987-1997
Douglas-fir	11,889	11,039	10,189	-170	-170	-170
Ponderosa pine	5,893	5,538	5,183	-71	-71	-71
Western white pine	8	42	76	7	7	7
Fir-spruce	2,949	3,047	3,144	20	20	20
Hemlock-Sitka spruce	1,058	1,642	2,227	117	117	117
Larch	358	241	125	-23	-23	-23
Lodgepole pine	1,639	1,776	1,913	27	27	27
Redwood	6	6	6	0	0	0
Other Hardwoods	2,256	2,773	3,290	103	103	103
Other forest types	200	330	461	26	26	26
Pinyon-juniper	1,800	2,175	2,550	75	75	75
Chaparral	19	45	70	5	5	5
Non-stocked	699	592	485	-21	-21	-21
Unused	0	0	0	0	0	0
TOTAL	28,773	29,247	29,720	95	95	95

Table 3. Total carbon stock on forest land and annual change by forest type (MMTC).
Forest type	1987	1992	1997	Average Annual Change
				1987-1992	1992-1997	1987-1997
Douglas-fir	1,468.4	1,385.7	1,285.1	-16.54	-20.13	-18.33
Ponderosa pine	444.3	415.8	385.2	-5.71	-6.11	-5.91
Western white pine	0.6	3.3	6.1	0.54	0.55	0.54
Fir-spruce	293.0	312.0	330.2	3.81	3.63	3.72
Hemlock-Sitka spruce	129.6	188.4	253.6	11.77	13.03	12.40
Larch	31.9	22.6	11.8	-1.86	-2.15	-2.00
Lodgepole pine	105.2	113.6	121.6	1.69	1.60	1.64
Redwood	0.7	0.7	0.7	0.00	0.00	0.00
Other Hardwoods	168.1	217.9	269.6	9.97	10.34	10.15
Other forest types	15.0	26.9	39.4	2.39	2.48	2.43
Pinyon-juniper	129.4	155.1	181.5	5.15	5.28	5.21
Chaparral	1.4	3.2	5.0	0.36	0.36	0.36
Non-stocked	55.1	46.0	37.3	-1.81	-1.75	-1.78
Unused	0.0	0.0	0.0	0.00	0.00	0.00
TOTAL	2,842.7	2,891.5	2,927.1	9.75	7.13	8.44

Table 4. Total carbon stock on forest land and annual change by accounting component (MMTC).
Accounting component	1987	1992	1997	Average Annual Change
				1987-1992	1992-1997	1987-1997
Biomass	925.9	957.9	989.9	6.41	6.41	6.41
Forest floor and coarse woody debris	515.6	512.4	509.9	-0.64	-0.51	-0.58
Soils	1,136.9	1,141.2	1,145.5	0.86	0.86	0.86
Wood products and landfills	264.3	279.9	281.8	3.12	0.37	1.75
TOTAL	2,842.7	2,891.5	2,927.1	9.75	7.13	8.44

Table 5. Total carbon stock on forest land and annual change by owner (MMTC).
Owner group	1987	1992	1997	Average Annual Change
				1987-1992	1992-1997	1987-1997
National Forest	1,342.0	1,411.3	1,473.2	13.86	12.39	13.12
Other Public	499.8	492.2	481.1	-1.51	-2.21	-1.86
Forest Industry	568.6	549.8	525.6	-3.76	-4.83	-4.30
Other Private	432.4	438.3	447.1	1.17	1.77	1.47
TOTAL	2,842.7	2,891.5	2,927.1	9.75	7.13	8.44

Table 6. Change in total carbon stock on forest land attributed to land use change (MMTC).
Accounting component	1987	1992	1997	Average Annual Change
				1987-1992	1992-1997	1987-1997
Biomass	0.0	0.7	3.5	0.15	0.54	0.35
Forest floor and coarse woody debris	0.0	-0.1	-0.2	-0.02	-0.02	-0.02
Soils	0.0	1.0	3.0	0.20	0.41	0.30
Wood products and landfills	0.0	0.1	0.3	0.03	0.03	0.03
TOTAL	0.0	1.8	6.6	0.35	0.97	0.66

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