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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

Illinois 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
4,030
4,044
4,058
3
3
3
Other forest land
0
0
0
0
0
0
Reserved timberland
236
236
236
0
0
0
TOTAL
4,266
4,280
4,294
3
3
3
 
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
20
20
20
0
0
0
Spruce-fir
0
0
0
0
0
0
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)
46
45
44
0
0
0
Oak-pine
13
14
14
0
0
0
Oak-hickory
2,205
2,215
2,226
2
2
2
Oak-gum-cypress
144
144
145
0
0
0
Elm-ash-cottonwood
774
770
767
-1
-1
-1
Maple-beech-birch
1,064
1,061
1,058
-1
-1
-1
Aspen-birch
0
0
0
0
0
0
Other forest types
0
0
0
0
0
0
Non-stocked
0
11
21
2
2
2
TOTAL
4,266
4,280
4,294
3
3
3
 
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
1.8
1.8
1.8
0.00
0.00
0.00
Spruce-fir
0.0
0.0
0.0
0.00
0.00
0.00
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)
3.1
3.1
3.1
0.00
-0.01
0.00
Oak-pine
1.1
1.1
1.1
0.01
0.01
0.01
Oak-hickory
201.5
203.0
204.8
0.31
0.35
0.33
Oak-gum-cypress
14.6
14.7
14.8
0.02
0.02
0.02
Elm-ash-cottonwood
74.3
74.4
74.5
0.01
0.03
0.02
Maple-beech-birch
88.6
88.7
88.9
0.02
0.04
0.03
Aspen-birch
0.0
0.0
0.0
0.00
0.00
0.00
Other forest types
0.0
0.0
0.0
0.00
0.00
0.00
Non-stocked
0.0
0.6
1.3
0.13
0.13
0.13
TOTAL
385.1
387.5
390.3
0.49
0.57
0.53
 
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
115.1
115.1
115.1
0.00
0.00
0.00
Forest floor and coarse woody debris
35.5
35.7
35.9
0.03
0.03
0.03
Soils
211.2
211.8
212.5
0.13
0.13
0.13
Wood products and landfills
23.3
24.9
26.9
0.32
0.40
0.36
TOTAL
385.1
387.5
390.3
0.49
0.57
0.53
 
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
21.1
22.0
22.9
0.18
0.17
0.17
Other Public
35.3
35.1
35.1
-0.03
-0.01
-0.02
Forest Industry
1.4
1.4
1.4
0.00
0.00
0.00
Other Private
327.3
328.9
331.0
0.33
0.41
0.37
TOTAL
385.1
387.5
390.3
0.49
0.57
0.53
 
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
0.0
0.0
0.00
0.00
0.00
Forest floor and coarse woody debris
0.0
0.0
0.0
0.00
0.00
0.00
Soils
0.0
0.0
0.0
0.00
0.00
0.00
Wood products and landfills
0.0
0.0
0.0
0.00
0.00
0.00
TOTAL
0.0
0.0
0.0
0.00
0.00
0.00

 


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