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The Potential of U.S. Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect

Metric Unit Data

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Chapter 2: Current and Historical Trends in Use, Management and Disturbance of United States Forest Lands-Metric Unit Data
by Richard A. Birdsey & George M. Lewis

Table 4a. Gain of forest land (afforestation) by region and previous nonforest class, conterminous U.S., 1907-19971.

 
1907
1939
1954
1964
1978
1988
Total 1907
Region and
to 1938
to 1953
to 1963
to 1977
to 1987
to 1997
to 1997
nonforest class
(million ha)
Northeast
    From cropland
0.88
0.93
2.26
0.18
0.21
0.20
4.66
    From pasture and range land
2.06
2.18
0.97
1.63
0.83
0.74
8.40
    From other nonforest
0.03
0.03
0.35
0.38
0.22
0.40
1.41
    Total from nonforest
2.97
3.14
3.58
2.20
1.25
1.34
14.48
North Central
    From cropland
0.12
0.07
0.31
0.06
0.11
0.21
0.88
    From pasture and range land
1.04
0.67
0.47
0.53
1.12
1.65
5.49
    From other nonforest
0.14
0.09
0.22
0.30
0.22
0.68
1.65
    Total from nonforest
1.29
0.84
1.00
0.89
1.46
2.55
8.03
Southeast
    From cropland
1.76
1.88
1.15
0.34
0.57
0.90
6.60
    From pasture and range land
1.17
1.25
0.49
0.79
0.42
0.82
4.94
    From other nonforest
0.02
0.02
0.04
0.09
0.10
0.22
0.49
    Total from nonforest
2.95
3.15
1.69
1.22
1.09
1.93
12.03
South Central
    From cropland
2.48
2.46
1.72
0.54
0.29
0.51
8.01
    From pasture and range land
2.48
2.46
0.43
2.17
1.25
2.18
10.98
    From other nonforest
0.06
0.06
0.11
0.13
0.16
0.24
0.76
    Total from nonforest
5.03
4.99
2.26
2.83
1.70
2.94
19.75
Great Plains
    From cropland
0.13
0.11
0.24
0.04
0.00
0.01
0.52
    From pasture and range land
0.30
0.25
0.10
0.08
0.07
0.38
1.19
    From other nonforest
0.00
0.00
0.00
0.00
0.00
0.03
0.03
    Total from nonforest
0.42
0.36
0.35
0.12
0.07
0.42
1.74
Intermountain
    From cropland
0.03
0.03
0.06
0.04
0.00
0.01
0.16
    From pasture and range land
0.25
0.24
1.14
0.79
0.64
0.98
4.04
    From other nonforest
0.01
0.01
0.04
0.07
0.07
0.08
0.27
    Total from nonforest
0.28
0.28
1.23
0.90
0.71
1.07
4.47
Pacific Coast
    From cropland
0.04
0.04
0.13
0.01
0.01
0.01
0.24
    From pasture and range land
0.10
0.09
0.31
0.03
0.22
0.32
1.06
    From other nonforest
0.00
0.00
0.02
0.02
0.02
0.04
0.09
    Total from nonforest
0.14
0.13
0.46
0.05
0.25
0.36
1.39
Conterminous U.S.
    From cropland
5.44
5.52
5.87
1.21
1.20
1.84
21.08
    From pasture and range land
7.40
7.15
3.90
6.03
4.55
7.08
36.10
    From other nonforest
0.25
0.20
0.78
0.99
0.79
1.69
4.71
    Total from nonforest
13.09
12.88
10.55
8.22
6.54
10.61
61.89
1 From various USDA and Census reports (see text).


Users of these tables are kindly requested to cite their source:
Birdsey, Richard A.; Lewis, George M. 2002. Current and Historical Trends in Use,
Management and Disturbance of United States Forest Lands. IN: Kimble, John et al. (eds.),
The Potential of U.S. Forest Soils to Sequester Carbon and Mitigate the Greenhouse Effect.
Boca Raton, Florida: CRC Press. XXX p.


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