Sierra Nevada
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 |