Acreages within various characteristic layers stratified by Inventoried Roadless Area categories within Oregon. |
All acreage figures are rounded to the nearest 1,000. | | | | | | |
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Oregon | INVENTORIED ROADLESS AREA CATEGORIES | SUM | | | |
| …that does not allow road construction and reconstruction | | …that does not allow road construction and the Forest Plan recommends wilderness | | …that does allow road construction and reconstruction | | | | |
IRA Category acres (1,000) | | 797 | | | | 1,168 | | 1,965 | |
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FIRE CONDITION CLASS | | acres* (1,000) | % | | acres* (1,000) | % | | acres* (1,000) | % | | acres* (1,000) | |
Condition Class 1 | | | | 105 | 13 | | | 0 | | 202 | 17 | | 307 | |
Condition Class 2 | | | | 356 | 45 | | | 0 | | 448 | 38 | | 804 | |
Condition Class 3 | | | | 293 | 37 | | | 0 | | 439 | 38 | | 732 | |
Non-Vegetation | | | | | 0 | | | 0 | | | 0 | | | |
Agriculture | | | | 38 | 5 | | | 0 | | 53 | 5 | | 91 | |
Urban/Development/Agriculture | | 4 | 1 | | | 0 | | 25 | 2 | | 29 | |
Water | | | | | 0 | | | 0 | | | 0 | | | |
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FIRE REGIMES | | | | | | | | | | | | |
0-35 yrs; Low Severity | | | 218 | 27 | | | 0 | | 563 | 48 | | 781 | |
0-35 yrs; Stand Replacement | | | 19 | 2 | | | 0 | | 49 | 4 | | 68 | |
35-100 yrs; Mixed Severity | | | 425 | 53 | | | 0 | | 347 | 30 | | 772 | |
35-100 yrs; Stand Replacement | | | 0 | | | 0 | | | 0 | | | |
200 + yrs; Stand Replacement | | 135 | 17 | | | 0 | | 208 | 18 | | 343 | |
Barren | | | | | 0 | | | 0 | | | 0 | | | |
Water | | | | | 0 | | | 0 | | | 0 | | | |
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MORTALITY | | | | | | | | | | | | |
Risk of Mortality Not Present | | | 754 | 95 | | | 0 | | 1,097 | 94 | | 1,851 | |
Risk of Mortality Present | | | 43 | 5 | | | 0 | | 71 | 6 | | 114 | |
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LAND COVER CLASS | | | | | | | | | | | | |
Deciduous Forest | | | | 9 | 1 | | | 0 | | 4 | 0 | | 13 | |
Evergreen Forest | | | | 737 | 93 | | | 0 | | 1,056 | 90 | | 1,793 | |
Mixed Forest | | | | | 0 | | | 0 | | | 0 | | | |
Shrub-Brush Rangeland | | | 6 | 1 | | | 0 | | 4 | 0 | | 10 | |
Rangeland | | | | 4 | 1 | | | 0 | | 26 | 2 | | 30 | |
Wetland | | | | | 0 | | | 0 | | | 0 | | | |
Tundra | | | | | 0 | | | 0 | | | 0 | | | |
Urban/Development/Agriculture | | 42 | 5 | | | 0 | | 78 | 7 | | 120 | |
Barren Land | | | | | 0 | | | 0 | | | 0 | | | |
Water | | | | | 0 | | | 0 | | | 0 | | | |
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PROTECTED AREA DATABASE | | | | | | | | | | | | |
GAP Code 1 | | | 8 | 1 | | | 0 | | 11 | 1 | | 19 | |
GAP Code 2 | | | 6 | 1 | | | 0 | | 6 | 1 | | 12 | |
GAP Code 3 | | | | 769 | 96 | | | 0 | | 1,134 | 97 | | 1,903 | |
Outside of PAD | | | | 15 | 2 | | | 0 | | 19 | 2 | | 34 | |
* These GIS overlays were prepared from coverages compiled at various scales and resolutions. To account for the differences in scales and resolutions, a percent-area by attribute was calculated for each characteristic overlay layer. The acres in each roadless category/characteristic attribute were calculated by multiplying percent-area and total acreages from the Inventoried Roadless Area coverage. Derived acres have been rounded to the nearest 1,000 acres. | | |
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