Southern California
Overview
This geographic zone was developed with funding from Joint Fire Sciences Project 98-1-8-06, A Risk Based Comparison of Potential Fuel Treatment Trade-Off Models. Information for pathways and process logic came from the following sources:
- Stephenson, John R., and Gena M. Calcarone. 1999. Southern California Mountains and Foothills Assessment: Habitat and Species Conservation Issues. Gen. Tech. Rep. GTR-PSW-175. Albany, CA: Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture; 402 p.
- Sierra Nevada Ecosystem Project: Final Report to Congress. Volume II: Assessments and Scientific Basis for Management Options, Wildland Resources Center Report No. 37 ISBN 1-8-87673-01-6. July 1996
- Meeting with Jo Keeley, University of California, Los Angeles in June 1999
- A variety of publications provided by Richard Minnich, University of California, Los Angeles
Ecological Stratification
| Ecological Stratification | Description |
| Fth-x | Foothills xeric |
| Fth-m | Foothills mesic |
| Lm-x | Lower montane xeric |
| Lm-m | Lower montane mesic |
| Um-x | Upper montane xeric |
| Um-m | Upper montane mesic |
| Sa | subalpine |
Vegetation Attributes
| Abbreviation | Description |
| AGR | AGRICULTURE |
| GRASS | GRASS |
| EXOTIC-GRASSES | EXOTIC-GRASSES |
| NF | NON-FOREST |
| NS | NON-STOCKED |
| CSS | COASTAL SAGE SCRUB |
| MDS | MIXED DESERT SHRUB |
| MTN-CHP | MONTANE CHAPARRAL |
| NM-CHP | NORTHERN MIXED CHAPARRAL |
| C-CHP | CEANOTHUS CHAPPARRAL |
| CA-CHP | CHAMISE CHAPARRAL |
| SD-CHP | SEMI-DESERT CHAPARRAL |
| BSB | BIG BASIN SAGEBRUSH |
| SB | SAGEBRUSH |
| TBRSB | TIMBERLINE SAGEBRUSH |
| ILO | INTERIOR LIVE OAK |
| CLO | CANYON LIVE OAK |
| BO | BLACK OAK |
| BO-PP | BLACK OAK-PONDEROSA PINE |
| PC | COULTER PINE |
| PJ | PINON PINE |
| JP | JEFFERY PINE |
| PP | PONDEROSA PINE |
| LP | LODGEPOLE PINE |
| WB | WHITEBARK PINE |
| WJ | WESTERN JUNIPER |
| WH | WESTERN HEMLOCK |
| CW | COTTONWOOD |
| QA | ASPEN |
| MH | MOUNTAIN HEMLOCK |
| MC-DF | MIXED CONIFER - DOUGLAS FIR |
| MC-IC | MIXED CONIFER - INCENSE CEDAR |
| MC-WF | MIXED CONIFER - WHITE FIR |
| MC-PP | MIXED CONIFER - PONDEROSA PINE |
| MC-SEQ | MIXED CONIFER - SEQUOIA |
| WP | WESTERN WHITE PINE |
| MC-RF | MIXED CONIFER - RED FIR |
| LP-RF | LODGEPOLE PINE - RED FIR |
| DF | DOUGLAS-FIR |
| RF | RED-FIR |
| XERIC-SHRUBS | XERIC-SHRUBS |
| MESIC-SHRUBS | MESIC-SHRUBS |
| RIP-SHRUBS | RIPARIAN-SHRUBS |
| ALPINE-SHRUBS | ALPINE-SHRUBS |
| WATER | WATER |
Size Classes
| Size Class, Structure | Description |
| SS | seedling & sapling < 5-inch DBH |
| POLE | pole size 5 - 8.9 inch DBH |
| PTS | two stories with largest being pole size |
| PMU | more than two stories, multi-storied, largest being pole size |
| MEDIUM | medium size 9 - 14.9 inch DBH |
| MTS | two stories with largest being medium size |
| MMU | more than two stories, multi-storied, largest being medium size |
| LARGE | large size, 15 - 20.9 inch DBH |
| LTS | two stories with largest being large size |
| LMU | more than two stories, multi-storied, largest being large size |
| VERY-LARGE | very large ≥ 21 inch |
| VLTS | two stories with largest being very-large |
| VLMU | more than two stories, multi-storied, largest being very-large |
Densities
| Density Class | Percent |
| 1 | 0 - 10% |
| 2 | 11 - 39% |
| 3 | 40 - 69% |
| 4 | 70 - 100% |
Disturbance Processes
| Disturbance Process | Description |
| srf | stand replacing fire |
| msf | mixed severity fire |
| lsf | light severity fire |
| dm | drought mortality |
| sbb | severe bark beetles |
| lbb | light bark beetles |
| succ | succession |
| Rd | root disease |
| bb-rd-mist | root disease, bark beetles, mistletoe complex |
| wpbr | white pine blister rust |