Table 1 Sample site descriptions and characteristics for areas treated with prescribed fire, as well as untreated controls, in Big Basin Redwoods State Park, California, USA. Data were collected in 2019 to determine the influence of burns conducted between 1999 and 2011 on vegetation, forest structure, and fuel load. Sites include: Ocean View Summit (OVSB), Skyline to the Sea burned (S2SB), Johansen Road East (JREB), Sunset Trail (SUNU), Skyline to the Sea unburned (S2SU), North Escape Road (NERU). Lowest RH = lowest humidity recorded on burn days; Highest RH = highest humidity recorded on burn days
| Â | Prescribed-burned sample sites | Unburned sample sites | ||||
|---|---|---|---|---|---|---|
OVSB | S2SB | JREB | SUNU | S2SU | NERU | |
Year burned | 1999 | 2007 | 2011 | NA | NA | NA |
Area burned (ha) | ~109 | 146.2 | 206.7 | NA | NA | NA |
Elevation range (m) | 410 to 472 | 304 to 439 | 413 to 492 | 259 to 340 | 357 to 425 | 307 to 360 |
Mean aspect (°) | 142 | 237 | 241 | 240 | 265 | 144 |
Slope range (%) | 0 to 51 | 12 to 65 | 16 to 62 | 14 to 49 | 11 to 55 | 5 to 40 |
Ignition dates | 2 Nov 1999 to 8 Jan 2000 | 9 to 24 Nov and Jan 2007 | 19 Oct 2011 to 4 Nov 2011 | NA | NA | NA |
Lowest RH (%) | 35 | 37 | 12 | NA | NA | NA |
Highest RH (%) | 100 | 100 | 100 | NA | NA | NA |
Fire activity | Slow backing fire with intermittent runs. | Backing fire with intermittent runs and torching. | Backing fire with intermittent runs and torching. 0.4 ha slop-over | NA | NA | NA |