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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

Maine 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
17,175
17,063
16,952
-22
-22
-22
Other forest land
262
337
412
15
15
15
Reserved timberland
276
311
346
7
7
7
TOTAL
17,713
17,711
17,710
0
0
0
 
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
2,216
1,750
1,285
-93
-93
-93
Spruce-fir
8,265
7,330
6,396
-187
-187
-187
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)
4
5
7
0
0
0
Oak-pine
55
93
130
8
8
8
Oak-hickory
321
392
462
14
14
14
Oak-gum-cypress
0
0
0
0
0
0
Elm-ash-cottonwood
321
357
392
7
7
7
Maple-beech-birch
4,868
5,758
6,648
178
178
178
Aspen-birch
1,583
1,964
2,345
76
76
76
Other forest types
0
0
0
0
0
0
Non-stocked
79
62
45
-3
-3
-3
TOTAL
17,713
17,711
17,710
0
0
0
 
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
222.8
186.3
149.7
-7.30
-7.32
-7.31
Spruce-fir
820.9
724.8
627.7
-19.22
-19.44
-19.33
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)
0.2
0.4
0.6
0.04
0.03
0.04
Oak-pine
4.5
6.8
9.2
0.47
0.48
0.48
Oak-hickory
25.4
31.7
38.2
1.25
1.30
1.28
Oak-gum-cypress
0.0
0.0
0.0
0.00
0.00
0.00
Elm-ash-cottonwood
16.5
17.4
18.5
0.19
0.21
0.20
Maple-beech-birch
487.3
577.0
666.2
17.92
17.84
17.88
Aspen-birch
131.1
160.6
189.8
5.90
5.84
5.87
Other forest types
3.4
3.4
3.8
0.01
0.08
0.05
Non-stocked
6.8
5.4
3.9
-0.29
-0.29
-0.29
TOTAL
1,719.0
1,713.8
1,707.5
-1.03
-1.26
-1.14
 
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
319.1
316.8
314.4
-0.48
-0.47
-0.48
Forest floor and coarse woody debris
186.9
182.9
178.7
-0.79
-0.85
-0.82
Soils
1,126.1
1,117.4
1,108.8
-1.73
-1.73
-1.73
Wood products and landfills
86.9
96.7
105.7
1.96
1.80
1.88
TOTAL
1,719.0
1,713.8
1,707.5
-1.03
-1.26
-1.14
 
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
4.8
5.1
5.4
0.07
0.07
0.07
Other Public
69.3
78.0
87.1
1.75
1.80
1.78
Forest Industry
836.2
787.8
733.2
-9.68
-10.93
-10.30
Other Private
808.7
842.9
881.9
6.83
7.80
7.31
TOTAL
1,719.0
1,713.8
1,707.5
-1.03
-1.26
-1.14
 
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
-0.4
-0.8
-0.09
-0.07
-0.08
Forest floor and coarse woody debris
0.0
-0.3
-0.6
-0.06
-0.06
-0.06
Soils
0.0
-0.7
-1.2
-0.13
-0.11
-0.12
Wood products and landfills
0.0
0.2
0.4
0.03
0.05
0.04
TOTAL
0.0
-1.2
-2.2
-0.25
-0.19
-0.22

 


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