Acreages within ICBEMP Broad-scale High Restoration Priority Subbasins, Fire Condition Classes 1,2,&3 and Fire Regimes 1 & 2 stratified by Inventoried Roadless Area categories | | | | | |
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All acreage figures are rounded to the nearest 1,000. | |
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High Restoration Priority Subbasins | IRA Categories (1B,1B-1,1C) | Sum | |
CC 1 | CC 2 | CC 3 | |
Regimes 1&2 | Regimes 1&2 | Regimes 1&2 | |
Biophysical, Economic, Tribal, Aquatic | 1 | 13 | 38 | 52 | |
Biophysical, Economic, Tribal | | | | | |
Biophysical, Economic, Aquatic | 2 | 47 | 88 | 137 | |
Biophysical, Tribal, Aquatic | | 1 | 1 | 3 | |
Biophysical, Economic | 20 | 67 | 8 | 95 | |
Biophysical, Tribal | 1 | 26 | 6 | 32 | |
Biophysical, Aquatic | | 10 | 31 | 42 | |
Economic, Tribal | 2 | 119 | 65 | 186 | |
Tribal, Auatic | | 5 | 2 | 7 | |
Biophysical | 1 | 11 | 15 | 27 | |
Economic | | 28 | 53 | 81 | |
Tribal | | 13 | 25 | 38 | |
Aquatic | 106 | 271 | 59 | 436 | |
Sum | 133 | 611 | 392 | 1,136 | |
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Definitions of Categories of Inventoried Roadless Areas | |
1B | Inventoried roadless area where road construction or reconstruction is not allowed | |
1B-1 | Inventoried roadless area where road construction or reconstruction is not allowed, and the forest plan recommends as wilderness | |
1C | Inventoried roadless area where road construction or reconstruction is allowed | |
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Definitions of Fire Condition Classes | |
1 | Forested areas with an historically short fire return interval usually have frequent fires of low intensity | |
2 | One or more fire return intervals have been missed, possibly resulting in increased fire sizes and intensities and decreased landscape mosaics and diversity | |
3 | Multiple fire return intervals have been missed resulting in dramatic departure from historical conditions | |
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Definitions of Fire Regimes | |
1 | 0-35+ years/low severity | |
2 | 0-35+ years/stand-replacement | |
The Fire Regimes are described in terms of frequency and severity and represent pre-settlement, historical fire processes. Fire regimes I and II represent frequent fire return intervals. The 0-35+ years/low severity fire regime (I) occurs mostly on forested land. The 0-35+years/stand-replacement regime (II) occurs mostly on grasslands and shrublands. Fire regimes III, IV, and V have longer fire return intervals and occur on forest lands, shrublands, and grasslands. | | |
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