USDA Forest ServiceSkip navigational links  
Northern Global Change Research Program
Go to:AK Go to:AL Go to:AR
Go to:AZ Go to:CA Go to:CO
Go to:CT Go to:DE Go to:FL
Go to:GA Go to:HI Go to:IA
Go to:ID Go to:IL Go to:IN
Go to:KS Go to:KY Go to:LA
Go to:MA Go to:MD Go to:ME
Go to:MI Go to:MN Go to:MO
Go to:MS Go to:MT Go to:NC
Go to:ND Go to:NE Go to:NH
Go to:NJ Go to:NM Go to:NV
Go to:NY Go to:OH Go to:OK
Go to:OR Go to:PA Go to:RI
Go to:SC Go to:SD Go to:TN
Go to:TX Go toUT Go to:VA
Go to:VT Go to:WA Go to:WI
Go to:WV Viewing:WY  

EPA Logo
 
Norhtern Global Change Research Program Logo
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.
 

Carbon in United States Forests and Wood Products, 1987-1997: State-by-State Estimates
by Richard A. Birdsey & George M. Lewis

Wyoming 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
4,332
4,708
5,085
75
75
75
Other forest land
2,381
2,169
1,957
-42
-42
-42
Reserved timberland
3,253
3,578
3,903
65
65
65
TOTAL
9,966
10,455
10,944
98
98
98
 
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
736
837
937
20
20
20
Ponderosa pine
1,544
1,475
1,406
-14
-14
-14
Western white pine
0
0
0
0
0
0
Fir-spruce
2,179
2,029
1,880
-30
-30
-30
Hemlock-Sitka spruce
0
0
0
0
0
0
Larch
0
0
0
0
0
0
Lodgepole pine
3,641
3,618
3,595
-5
-5
-5
Redwood
0
0
0
0
0
0
Other Hardwoods
514
545
575
6
6
6
Other forest types
297
1,070
1,842
155
155
155
Pinyon-juniper
709
709
708
0
0
0
Chaparral
0
0
0
0
0
0
Non-stocked
347
173
0
-35
-35
-35
TOTAL
9,966
10,455
10,944
98
98
98
 
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
61.1
69.6
77.9
1.70
1.66
1.68
Ponderosa pine
136.5
130.2
115.1
-1.26
-3.02
-2.14
Western white pine
0.0
0.0
0.0
0.00
0.00
0.00
Fir-spruce
196.2
182.3
167.3
-2.77
-3.01
-2.89
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
248.9
246.1
241.1
-0.56
-1.01
-0.79
Redwood
0.0
0.0
0.0
0.00
0.00
0.00
Other Hardwoods
50.0
50.6
34.2
0.13
-3.29
-1.58
Other forest types
22.4
74.9
128.5
10.50
10.72
10.61
Pinyon-juniper
47.1
47.0
47.0
-0.01
-0.01
-0.01
Chaparral
0.0
0.0
0.0
0.00
0.00
0.00
Non-stocked
18.9
10.0
0.1
-1.78
-2.00
-1.89
TOTAL
781.2
810.9
811.1
5.95
0.04
2.99
 
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
184.3
193.7
203.1
1.88
1.88
1.88
Forest floor and coarse woody debris
158.3
164.5
169.4
1.24
0.97
1.11
Soils
354.7
358.8
362.9
0.82
0.83
0.82
Wood products and landfills
83.8
93.9
75.7
2.01
-3.64
-0.82
TOTAL
781.2
810.9
811.1
5.95
0.04
2.99
 
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
371.4
405.8
437.8
6.88
6.41
6.65
Other Public
238.6
229.9
219.2
-1.74
-2.14
-1.94
Forest Industry
2.6
-1.5
-5.6
-0.81
-0.81
-0.81
Other Private
168.6
176.7
159.6
1.61
-3.42
-0.90
TOTAL
781.2
810.9
811.1
5.95
0.04
2.99
 
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
2.5
0.08
0.42
0.25
Forest floor and coarse woody debris
0.0
-0.3
-0.6
-0.06
-0.06
-0.06
Soils
0.0
-0.1
0.1
-0.01
0.04
0.01
Wood products and landfills
0.0
1.7
3.2
0.35
0.30
0.32
TOTAL
0.0
1.7
5.2
0.35
0.69
0.52

 


Page Contact: Kevin McCullough