Acreages within ICBEMP Broad-scale Landscape Restoration Priorities, Fire Condition Classes 1,2, & 3, and Fire Regimes 1 & 2 stratified by IRA Category | | | | | | | | | | |
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All acreage figures are rounded to the nearest 1,000. | |
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Restoration Priority | IRA (1B, 1B-1, 1C) | | |
CC 1 | CC 2 | CC 3 | Sum | | |
Regime 1&2 | Regime 1&2 | Regime 1&2 | | |
Low | 405 | 962 | 541 | 1,907 | | |
Moderate | 68 | 151 | 68 | 287 | | |
High | 15 | 352 | 348 | 715 | | |
Sum | 488 | 1,465 | 956 | 2,909 | | |
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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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