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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

Utah 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
3,078
3,889
4,700
162
162
162
Other forest land
12,165
11,200
10,235
-193
-193
-193
Reserved timberland
990
880
770
-22
-22
-22
TOTAL
16,234
15,969
15,705
-53
-53
-53
 
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
839
1,011
1,182
34
34
34
Ponderosa pine
521
566
611
9
9
9
Western white pine
0
0
0
0
0
0
Fir-spruce
1,604
1,662
1,721
12
12
12
Hemlock-Sitka spruce
0
0
0
0
0
0
Larch
0
0
0
0
0
0
Lodgepole pine
664
612
559
-11
-11
-11
Redwood
0
0
0
0
0
0
Other Hardwoods
2,914
2,789
2,665
-25
-25
-25
Other forest types
223
158
93
-13
-13
-13
Pinyon-juniper
9,316
9,095
8,874
-44
-44
-44
Chaparral
12
6
0
-1
-1
-1
Non-stocked
139
70
0
-14
-14
-14
Unused
0
0
0
0
0
0
TOTAL
16,234
15,969
15,705
-53
-53
-53
 
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
53.1
66.7
80.4
2.72
2.73
2.72
Ponderosa pine
30.8
33.1
35.3
0.47
0.43
0.45
Western white pine
0.0
0.0
0.0
0.00
0.00
0.00
Fir-spruce
129.7
138.6
147.1
1.78
1.71
1.75
Hemlock-Sitka spruce
0.0
0.0
0.0
0.00
0.00
0.00
Larch
0.0
0.0
0.0
0.00
0.00
0.00
Lodgepole pine
40.0
37.5
35.0
-0.49
-0.50
-0.49
Redwood
0.0
0.0
0.0
0.00
0.00
0.00
Other Hardwoods
185.3
179.6
173.6
-1.14
-1.19
-1.17
Other forest types
17.0
11.8
6.9
-1.03
-0.99
-1.01
Pinyon-juniper
662.3
646.1
630.0
-3.23
-3.23
-3.23
Chaparral
0.8
0.4
0.0
-0.08
-0.08
-0.08
Non-stocked
9.8
4.9
0.1
-0.98
-0.96
-0.97
Unused
0.0
0.0
0.0
0.00
0.00
0.00
TOTAL
1,128.7
1,118.8
1,108.3
-1.98
-2.08
-2.03
 
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
247.1
248.3
249.5
0.24
0.25
0.25
Forest floor and coarse woody debris
357.4
348.7
339.5
-1.75
-1.83
-1.79
Soils
519.8
517.1
514.3
-0.54
-0.54
-0.54
Wood products and landfills
4.4
4.8
4.9
0.08
0.03
0.06
TOTAL
1,128.7
1,118.8
1,108.3
-1.98
-2.08
-2.03
 
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
360.2
384.7
408.9
4.91
4.83
4.87
Other Public
601.6
550.3
498.6
-10.27
-10.34
-10.31
Forest Industry
0.0
0.0
0.0
0.00
0.00
0.00
Other Private
166.9
183.8
200.9
3.38
3.42
3.40
TOTAL
1,128.7
1,118.8
1,108.3
-1.98
-2.08
-2.03
 
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
-4.8
-0.47
-0.49
-0.48
Forest floor and coarse woody debris
0.0
-2.2
-4.4
-0.44
-0.45
-0.44
Soils
0.0
-2.4
-4.7
-0.47
-0.47
-0.47
Wood products and landfills
0.0
0.2
0.3
0.03
0.03
0.03
TOTAL
0.0
-6.7
-13.6
-1.35
-1.38
-1.36

 


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