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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

Texas 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	12,414	12,090	11,766	-65	-65	-65
Other forest land	7,311	6,883	6,455	-86	-86	-86
Reserved timberland	780	456	133	-65	-65	-65
TOTAL	20,505	19,430	18,354	-215	-215	-215

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	0	0	0	0	0	0
Spruce-fir	0	0	0	0	0	0
Longleaf-slash pine (planted)	204	189	175	-3	-3	-3
Longleaf-slash pine (natural)	76	69	62	-1	-1	-1
Loblolly-shortleaf pine (planted)	982	1,288	1,595	61	61	61
Loblolly-shortleaf pine (natural)	3,358	2,933	2,507	-85	-85	-85
Oak-pine	2,589	2,564	2,539	-5	-5	-5
Oak-hickory	11,225	8,034	4,842	-638	-638	-638
Oak-gum-cypress	1,919	1,848	1,778	-14	-14	-14
Elm-ash-cottonwood	152	109	65	-9	-9	-9
Maple-beech-birch	0	0	0	0	0	0
Aspen-birch	0	0	0	0	0	0
Other forest types	0	2,375	4,750	475	475	475
Non-stocked	0	21	41	4	4	4
TOTAL	20,505	19,430	18,354	-215	-215	-215

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	0.0	0.0	0.0	0.00	0.00	0.00
Spruce-fir	0.0	0.0	0.0	0.00	0.00	0.00
Longleaf-slash pine (planted)	11.3	10.7	10.4	-0.12	-0.06	-0.09
Longleaf-slash pine (natural)	4.5	4.4	4.2	-0.03	-0.03	-0.03
Loblolly-shortleaf pine (planted)	51.0	65.8	81.8	2.95	3.22	3.09
Loblolly-shortleaf pine (natural)	214.4	194.3	176.3	-4.02	-3.62	-3.82
Oak-pine	152.6	156.3	162.1	0.75	1.15	0.95
Oak-hickory	544.7	403.2	268.0	-28.30	-27.02	-27.66
Oak-gum-cypress	107.9	110.0	111.5	0.42	0.31	0.37
Elm-ash-cottonwood	7.9	5.5	3.0	-0.49	-0.49	-0.49
Maple-beech-birch	0.1	0.0	0.0	-0.01	-0.01	-0.01
Aspen-birch	0.0	0.0	0.0	0.00	0.00	0.00
Other forest types	16.1	124.1	235.1	21.60	22.21	21.91
Non-stocked	0.0	0.6	1.2	0.12	0.12	0.12
TOTAL	1,110.5	1,074.9	1,053.8	-7.11	-4.21	-5.66

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	324.9	316.0	307.1	-1.78	-1.77	-1.77
Forest floor and coarse woody debris	116.5	110.1	103.6	-1.26	-1.30	-1.28
Soils	589.3	563.3	540.8	-5.21	-4.50	-4.85
Wood products and landfills	79.8	85.5	102.3	1.13	3.36	2.25
TOTAL	1,110.5	1,074.9	1,053.8	-7.11	-4.21	-5.66

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	62.4	55.8	49.4	-1.31	-1.27	-1.29
Other Public	39.6	28.7	18.0	-2.18	-2.14	-2.16
Forest Industry	221.6	218.9	223.6	-0.52	0.93	0.20
Other Private	786.9	771.4	762.7	-3.10	-1.74	-2.42
TOTAL	1,110.5	1,074.9	1,053.8	-7.11	-4.21	-5.66

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	-2.3	-3.5	-0.45	-0.26	-0.35
Forest floor and coarse woody debris	0.0	-1.0	-2.0	-0.20	-0.20	-0.20
Soils	0.0	-2.4	-4.7	-0.48	-0.46	-0.47
Wood products and landfills	0.0	0.8	1.9	0.16	0.22	0.19
TOTAL	0.0	-4.9	-8.3	-0.97	-0.70	-0.83

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