Acreages within various characteristic layers stratified by Inventoried Roadless Area categories within Arizona
All acreage figures are rounded to the nearest 1,000.
Arizona 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)   415   61   699   1,174
       
FIRE CONDITION CLASS   acres* (1,000) %   acres* (1,000) %   acres* (1,000) %   acres* (1,000)
Condition Class 1     55 13   14 23   80 11   149
Condition Class 2     332 80   43 70   418 60   793
Condition Class 3     20 5   4 7   194 28   218
Non-Vegetation       0     0     0    
Agriculture     6 2     0   8 1   14
Urban/Development/Agriculture   2 0     0     0   2
Water         0     0     0    
 
FIRE REGIMES                      
0-35 yrs; Low Severity     58 14   14 22   344 49   416
0-35 yrs; Stand Replacement     309 75   34 55   221 32   564
35-100 yrs; Mixed Severity     7 2     0   22 3   29
35-100 yrs; Stand Replacement   40 10   14 23   112 16   166
200 + yrs; Stand Replacement     0     0     0    
Barren       0     0     0    
Water         0     0     0    
 
MORTALITY                      
Risk of Mortality Not Present     412 100   58 95   693 99   1,163
Risk of Mortality Present     2 1   3 5   6 1   11
 
LAND COVER CLASS                      
Deciduous Forest       0     0     0    
Evergreen Forest     52 13   5 7   404 58   461
Mixed Forest       0     0     0    
Shrub-Brush Rangeland     346 83   56 92   285 41   687
Rangeland     9 2     0   2 0   11
Wetland       0     0     0    
Tundra       0     0     0    
Urban/Development/Agriculture   8 2     0   8 1   16
Barren Land       0     0     0    
Water         0     0     0    
 
PROTECTED AREA DATABASE                      
GAP Code 1       0     0     0    
GAP Code 2     2 0     0   14 2   16
GAP Code 3     410 99   61 100   669 96   1,140
Outside of PAD       3 1     0   16 2   19
* 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 multiply percent-area and total acreages from the Inventoried Roadless Area coverage.  Derived acres have been rounded to the nearest 1,000 acres.