 |
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 6a. Loss of forest land (deforestation)
by region and new 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 |
|
|
To cropland |
0.12
|
0.07
|
0.22
|
0.16
|
0.08
|
0.09
|
0.73
|
|
To pasture and range land |
0.05
|
0.03
|
0.50
|
0.02
|
0.07
|
0.11
|
0.78
|
|
To other nonforest |
0.06
|
0.07
|
0.82
|
0.90
|
0.70
|
1.07
|
3.62
|
| Total
to nonforest |
0.23
|
0.17
|
1.54
|
1.08
|
0.85
|
1.26
|
5.13
|
|
|
| North
Central |
|
|
To cropland |
0.95
|
1.48
|
0.36
|
1.84
|
0.24
|
0.09
|
4.96
|
|
To pasture and range land |
0.11
|
0.16
|
0.24
|
0.20
|
0.29
|
0.18
|
1.19
|
|
To other nonforest |
0.05
|
0.17
|
0.43
|
0.59
|
0.43
|
0.38
|
2.05
|
| Total
to nonforest |
1.11
|
1.82
|
1.03
|
2.64
|
0.97
|
0.65
|
8.20
|
|
|
| Southeast |
|
|
To cropland |
2.67
|
1.26
|
0.39
|
0.81
|
0.38
|
0.22
|
5.73
|
|
To pasture and range land |
4.01
|
1.90
|
0.90
|
0.35
|
0.39
|
0.30
|
7.84
|
|
To other nonforest |
0.22
|
0.21
|
0.55
|
1.15
|
1.27
|
1.33
|
4.73
|
| Total
to nonforest |
6.90
|
3.37
|
1.84
|
2.31
|
2.03
|
1.86
|
18.30
|
|
|
| South
Central |
|
|
To cropland |
1.43
|
0.67
|
0.61
|
2.68
|
0.67
|
0.11
|
6.17
|
|
To pasture and range land |
1.43
|
0.67
|
2.43
|
0.67
|
1.55
|
0.61
|
7.35
|
|
To other nonforest |
0.57
|
0.53
|
0.99
|
1.15
|
1.57
|
0.84
|
5.66
|
| Total
to nonforest |
3.42
|
1.87
|
4.03
|
4.51
|
3.79
|
1.56
|
19.17
|
|
|
| Great
Plains |
|
|
To cropland |
1.12
|
0.52
|
0.15
|
0.15
|
0.04
|
0.01
|
1.99
|
|
To pasture and range land |
0.48
|
0.22
|
0.35
|
0.06
|
0.05
|
0.02
|
1.19
|
|
To other nonforest |
0.01
|
0.01
|
0.01
|
0.03
|
0.04
|
0.03
|
0.13
|
| Total
to nonforest |
1.61
|
0.75
|
0.51
|
0.25
|
0.14
|
0.06
|
3.31
|
|
|
| Intermountain |
|
|
To cropland |
1.27
|
1.24
|
0.75
|
0.80
|
0.00
|
0.00
|
4.07
|
|
To pasture and range land |
0.14
|
0.14
|
0.75
|
0.80
|
0.43
|
0.37
|
2.63
|
|
To other nonforest |
0.01
|
0.01
|
0.04
|
0.08
|
0.08
|
0.07
|
0.29
|
| Total
to nonforest |
1.41
|
1.39
|
1.55
|
1.69
|
0.50
|
0.45
|
6.99
|
|
|
| Pacific
Coast |
|
|
To cropland |
0.84
|
0.82
|
0.10
|
0.18
|
0.03
|
0.01
|
1.98
|
|
To pasture and range land |
1.97
|
1.92
|
0.24
|
0.72
|
0.64
|
0.34
|
5.82
|
|
To other nonforest |
0.01
|
0.02
|
0.26
|
0.44
|
0.48
|
0.23
|
1.44
|
| Total
to nonforest |
2.82
|
2.76
|
0.59
|
1.34
|
1.15
|
0.58
|
9.25
|
|
|
| Conterminous
U.S. |
|
|
To cropland |
8.40
|
6.07
|
2.57
|
6.63
|
1.43
|
0.53
|
25.63
|
|
To pasture and range land |
8.18
|
5.03
|
5.41
|
2.83
|
3.41
|
1.94
|
26.80
|
|
To other nonforest |
0.93
|
1.02
|
3.10
|
4.36
|
4.57
|
3.95
|
17.93
|
| Total to nonforest |
17.51
|
12.12
|
11.08
|
13.81
|
9.42
|
6.41
|
70.36
|
| 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.
|