APPENDIX S: 

FIRE REGIME CONDITION 

CLASS 
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Jarbidge Draft RMP/EIS Appendix S 

APPENDIX S: FIRE REGIME CONDITION CLASS 

This appendix displays the detailed results of the Fire Regime Condition Class (FRCC) analysis 

conducted for baseline vegetation conditions in the planning area. The FRCC analysis was conducted at 

the Vegetation Management Area (VMA) scale, the same scale at which decisions for upland vegetation 

management were made. An FRCC rating was determined for each Potential Natural Vegetation Group 

(PNVG) within a VMA. Because FRCC is a landscape-scale analysis, the results should not be 

interpreted to indicate the condition of each acre within a PNVG as the FRCC rating applies to an entire 

PNVG. Table S- 1, Table S- 2, Table S- 3, and Table S- 4 display the results of the FRCC analysis for 

VMAs A, B, C, and D, respectively. The Wildland Fire Ecology and Management section of Chapter 3 

describes the FRCC analysis process in more detail. 

Table S- 1. FRCC in VMA A 

Succession 

Class 

Baseline Conditions in the 

Planning Area Reference 

Conditions (%) 

S-Class 

Similarity (%) Condition Class 

Acres % 

Basin Big Sagebrush (R2SBBB) 

A 319 53 15 15 

B 34 6 70 6 

C 28 5 15 5 

U 213 36 0 0 

Total 594 100 100 26 3 

Mountain Shrubland with tree (R2MSHBwt) 

A 0 0 5 0 

B 0 0 20 0 

C 18 24 65 24 

D 57 76 10 10 

U 0 0 0 0 

Total 75 100 100 34 2 

Salt Desert Shrub (R2DSH) 

A 0 0 30 0 

B 0 0 10 0 

C 0 0 55 0 

D 0 0 5 0 

U 1,641 100 0 0 

Total 1,641 100 100 0 3 

Wyoming Sagebrush Steppe (R2BWYse) 

A 24,353 11 20 11 

B 8,209 4 50 4 

C 8,825 4 30 4 

U 172,417 81 0 0 

Total 213,804 100 100 19 3 

Not Classified 

NR 5,503 

A-169 August 2010 
 

 

 

 

 

 

 

 

 

 

 

August 2010 A-170 

Appendix S Jarbidge Draft RMP/EIS 

Table S- 2. FRCC in VMA B 

Succession 

Class 

Baseline Conditions in the 

Planning Area Reference 

Conditions (%) 

S-Class 

Similarity (%) Condition Class 

Acres % 

Basin Big Sagebrush (R2SBBB) 

A 4 2 15 2 

B 42 22 70 22 

C 133 70 15 15 

U 11 6 0 0 

Total 190 100 100 39 2 

Black and Low Sagebrush (R2SBDW) 

A 0 0 10 0 

B 75 27 70 27 

C 206 73 20 20 

U 0 0 0 0 

Total 281 100 100 47 2 

Mountain Shrubland with tree (R2MSHBwt) 

A 0 0 5 0 

B 138 38 20 20 

C 6 2 65 2 

D 221 60 10 10 

U 0 0 0 0 

Total 365 100 100 32 3 

Salt Desert Shrub (R2DSH) 

A 0 0 30 0 

B 687 19 10 10 

C 2,418 65 55 55 

D 0 0 5 0 

U 602 16 0 0 

Total 3,707 100 100 65 2 

Wyoming Sagebrush Steppe (R2BWYse) 

A 194,047 32 20 20 

B 44,797 7 50 7 

C 119,097 20 30 20 

U 245,118 41 0 0 

Total 603,059 100 100 47 2 

Not Classified 

NR 22,806 
 

 

 

 

 

 

 

 

 

 

 

 

 

Jarbidge Draft RMP/EIS Appendix S 

Table S- 3. FRCC in VMA C 

Succession 

Class 

Baseline Conditions in the 

Planning Area Reference 

Conditions (%) 

S-Class 

Similarity (%) Condition Class 

Acres % 

Basin Big Sagebrush (R2SBBB) 

A 9,285 98 15 15 

B 0 0 70 0 

C 40 1 15 1 

U 45 1 0 0 

Total 9,370 100 100 16 3 

Black and Low Sagebrush (R2SBDW) 

A 3,684 37 10 10 

B 246 2 70 2 

C 5,853 58 20 20 

U 298 3 0 0 

Total 10,081 100 100 32 3 

Mountain Big Sagebrush (R2SBMT) 

A 117 14 20 14 

B 0 0 45 0 

C 152 19 35 19 

U 543 67 0 0 

Total 812 100 100 33 2 

Mountain Shrubland with tree (R2MSHBwt) 

A 8 100 5 5 

B 0 0 20 0 

C 0 0 65 0 

D 0 0 10 0 

U 0 0 0 0 

Total 8 100 100 5 3 

Stable Aspen (R2ASPN) 

A 0 0 10 0 

B 0 0 70 0 

C 23 100 20 20 

U 0 0 0 0 

Total 23 100 100 20 3 

Wyoming Sagebrush Steppe (R2BWYse) 

A 118,490 42 20 20 

B 40,958 14 50 14 

C 41,190 14 30 14 

U 84,459 30 0 0 

Total 285,097 100 100 48 2 

Not Classified 

NR 7,914 

A-171 August 2010 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix S Jarbidge Draft RMP/EIS 

Table S- 4. FRCC in VMA D 

Succession 

Class 

Baseline Conditions in the 

Planning Area Reference 

Conditions (%) 

S-Class 

Similarity (%) Condition Class 

Acres % 

Basin Big Sagebrush (R2SBBB) 

A 18,040 99 15 15 

B 1 0 70 0 

C 121 1 15 1 

U 0 

Total 18,162 100 100 16 3 

Black and Low Sagebrush (R2SBDW) 

A 39,033 39 10 10 

B 4,129 4 70 4 

C 47,438 47 20 20 

U 10,587 10 0 0 

Total 101,187 100 100 34 2 

Curlleaf Mountain Mahogany (R2SBMT) 

A 640 22 5 5 

B 89 3 15 3 

C 2,152 75 10 10 

D 0 0 40 0 

E 0 0 30 0 

U 0 0 0 0 

Total 2,881 100 100 18 3 

Mountain Big Sagebrush (R2SBMT) 

A 5,841 17 20 17 

B 4,225 12 45 12 

C 19,089 54 35 35 

U 6,126 17 0 0 

Total 35,281 100 100 64 2 

Mountain Shrubland with tree (R2MSHBwt) 

A 601 10 5 5 

B 605 10 20 10 

C 219 4 65 4 

D 4,502 76 10 10 

U 0 0 0 0 

Total 5,927 100 100 29 3 

Stable Aspen (R2ASPN) 

A 482 16 10 10 

B 242 8 70 8 

C 2,231 76 20 20 

U 0 0 

Total 2,955 100 100 38 2 

Wyoming Sagebrush Steppe (R2BWYse) 

A 7,204 26 20 20 

B 3,815 14 50 14 

C 12,116 43 30 30 

U 4,825 17 0 0 

Total 27,960 100 100 64 2 

Not Classified 

NR 14,530 

August 2010 A-172