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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

Michigan 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	17,364	18,015	18,667	130	130	130
Other forest land	234	162	90	-14	-14	-14
Reserved timberland	623	600	577	-5	-5	-5
TOTAL	18,220	18,778	19,335	111	111	111

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
White-red-jack pine	1,742	1,896	2,050	31	31	31
Spruce-fir	2,798	2,819	2,840	4	4	4
Longleaf-slash pine (planted)	0	0	0	0	0	0
Longleaf-slash pine (natural)	0	0	0	0	0	0
Loblolly-shortleaf pine (planted)	0	0	0	0	0	0
Loblolly-shortleaf pine (natural)	118	59	0	-12	-12	-12
Oak-pine	0	0	0	0	0	0
Oak-hickory	1,823	1,918	2,014	19	19	19
Oak-gum-cypress	0	0	0	0	0	0
Elm-ash-cottonwood	1,345	1,523	1,702	36	36	36
Maple-beech-birch	6,401	6,891	7,381	98	98	98
Aspen-birch	3,784	3,542	3,300	-48	-48	-48
Other forest types	0	0	0	0	0	0
Non-stocked	211	130	49	-16	-16	-16
TOTAL	18,220	18,778	19,335	111	111	111

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
White-red-jack pine	152.7	169.6	186.5	3.39	3.38	3.38
Spruce-fir	225.7	228.3	230.9	0.53	0.53	0.53
Longleaf-slash pine (planted)	0.0	0.0	0.0	0.00	0.00	0.00
Longleaf-slash pine (natural)	0.0	0.0	0.0	0.00	0.00	0.00
Loblolly-shortleaf pine (planted)	0.0	0.0	0.0	0.00	0.00	0.00
Loblolly-shortleaf pine (natural)	5.9	3.1	0.0	-0.56	-0.63	-0.59
Oak-pine	0.0	0.0	0.0	0.00	0.00	0.00
Oak-hickory	143.4	161.3	179.0	3.58	3.53	3.56
Oak-gum-cypress	0.0	0.0	0.0	0.00	0.00	0.00
Elm-ash-cottonwood	111.9	127.2	142.2	3.06	3.01	3.04
Maple-beech-birch	600.5	648.0	694.5	9.50	9.29	9.40
Aspen-birch	298.7	282.3	265.8	-3.29	-3.31	-3.30
Other forest types	1.1	1.3	1.5	0.04	0.03	0.04
Non-stocked	13.4	8.8	4.3	-0.90	-0.91	-0.91
TOTAL	1,553.2	1,630.0	1,704.6	15.36	14.93	15.14

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	382.2	436.0	489.9	10.76	10.78	10.77
Forest floor and coarse woody debris	160.0	165.4	170.5	1.08	1.01	1.04
Soils	952.5	961.1	969.4	1.72	1.65	1.69
Wood products and landfills	58.4	67.4	74.9	1.80	1.48	1.64
TOTAL	1,553.2	1,630.0	1,704.6	15.36	14.93	15.14

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	217.8	228.9	239.6	2.22	2.14	2.18
Other Public	359.1	370.9	383.5	2.35	2.53	2.44
Forest Industry	181.4	159.9	138.8	-4.30	-4.22	-4.26
Other Private	794.9	870.3	942.7	15.09	14.47	14.78
TOTAL	1,553.2	1,630.0	1,704.6	15.36	14.93	15.14

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	-1.3	-0.3	-0.25	0.19	-0.03
Forest floor and coarse woody debris	0.0	-0.9	-1.7	-0.17	-0.17	-0.17
Soils	0.0	-1.9	-3.1	-0.39	-0.24	-0.31
Wood products and landfills	0.0	0.7	1.4	0.13	0.14	0.14
TOTAL	0.0	-3.4	-3.8	-0.68	-0.08	-0.38

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