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Table 2 Comparison of the Wieslander VTM and CALVEG for Forest Service and National Park Service lands within the VTM study area delineated in Figures 2A and 3A.

From: Corroborating Evidence of a Pre-Euro-American Low- to Moderate-Severity Fire Regime in Yellow Pine-Mixed Conifer Forests of the Sierra Nevada, California, USA

California wildlife habitat relationship (CWHR) type Wieslander vegetation type map (VTM)a VTM for Leiberg’s study areaa VTM outside Leiberg’s study areaa CALVEGa CALVEG for Leiberg’s study areaa CALVEG outside Leiberg’s study areaa
ha % ha % ha % ha % ha % ha %
Annual grassland 11 888 0.6 5 808 0.7 6 080 0.6 20 976 1.1 8 464 1.0 12 512 1.2
Aspen 2 352 0.1 320 0.0 2 032 0.2 640 0.0 0 0.0 640 0.1
Bitterbrush 2 176 0.1 1 040 0.1 1 136 0.1 864 0.0 864 0.1 0 0.0
Blue oak-foothill pine 8 992 0.5 1 296 0.1 7 696 0.7 1 984 0.1 448 0.1 1 536 0.2
Blue oak woodland 640 0.0 96 0.0 544 0.1 576 0.0 0 0.0 576 0.1
Chamise-redshank chaparral 12 608 0.6 0 0.0 12 608 1.2 1 488 0.1 0 0.0 1 488 0.1
Closed-cone pine-cypress 1 088 0.1 144 0.0 944 0.1 2 272 0.1 576 0.1 1 696 0.2
Douglas-fir 35 264 1.8 28 224 3.2 7 040 0.7 74 720 4.0 74 112 8.6 608 0.1
Eastside pine 33 664 1.7 16 464 1.8 17 200 1.6 70 688 3.8 70 096 8.1 592 0.1
Jeffrey pine 268 928 13.8 153 392 17.2 115 536 11.0 48 160 2.6 5 376 0.6 42 784 4.2
Juniper 6 720 0.3 464 0.1 6 256 0.6 10 960 0.6 128 0.0 10 832 1.1
Lodgepole pine 123 120 6.3 10 720 1.2 112 400 10.7 38 288 2.0 5 264 0.6 33 024 3.3
Low sage 3 184 0.2 2 416 0.3 768 0.1 160 0.0 112 0.0 48 0.0
Mixed chaparral 25 040 1.3 4 944 0.6 20 096 1.9 27 328 1.5 1 808 0.2 25 520 2.5
Montane chaparral 159 456 8.2 106 688 12.0 52 768 5.0 121 504b 6.5 62 800b 7.2 58 704 5.8
Montane hardwood-conifer 736 0.0 144 0.0 592 0.1 47 392 2.5 28 368 3.3 19 024 1.9
Montane hardwood 86 192 4.4 48 304 5.4 37 888 3.6 126 416 6.7 41 488 4.8 84 928 8.4
Montane riparian 1 376 0.1 352 0.0 1 024 0.1 3 888 0.2 1 312 0.2 2 576 0.3
Perennial grassland 0 0.0 0 0.0 0 0.0 19 888 1.1 1 264 0.1 18 624 0.0
Ponderosa pine 245 088 12.6 58 752 6.6 186 336 17.7 81 568 4.3 15 872 1.8 65 696 6.5
Red fir 218 352 11.2 114 480 12.8 103 872 9.9 223 712 11.9 76 032 8.8 147 680 14.6
Sagebrush 27 456 1.4 18 896 2.1 8 560 0.8 25 328 1.3 24 544 2.8 784 0.1
Sierran mixed conifer 412 336 21.2 235 552 26.4 176 784 16.8 736 832 39.2 355 264 41.0 381 568 37.7
Subalpine conifer 111696 5.7 18 784 2.1 92 912 8.8 80 048 4.3 1 680 0.2 78 368 7.7
Wet meadow 23 520 1.2 6 240 0.7 17 280 1.6 6 432 0.3 1 200 0.1 5 232 0.5
White fir 122 016 6.3 57 744 6.5 64 272 6.1 105 808 5.6 89 328 10.3 16 480 1.6
  1. a Although there are polygons <1 ha, the minimum mapping unit was typically about 16 ha (Wieslander et al. 1933, Thorne et al. 2006). Polygons were resampled to 400 m × 400 m pixels for comparing CALVEG to the VTM.
  2. b Includes areas on the Plumas NF that burned at high severity but mapped in 2000 as barren in the 1999 Bean Creek, 1999 Bucks, 1999 Devils Gap, 1999 Horton2, 1999 Pidgen, 1999 Stag, and 2000 Storrie fires.