Hardwood Rangeland Expert System
| State-and-transition models for California's Hardwood Rangelands |
This study describes a state-and-transition
model for hardwood rangelands that portrays vegetation dynamics at a particular
site as a set of transitions between discrete and persistent vegetation conditions,
or states. Either natural disturbances (e.g., weather, fire, herbivores) or
management actions (e.g., grazing, burning, wood harvest, elimination or introduction
of plant species, fertilization) can trigger transitions between states. Very
often transitions require a particular combination of causes. Transitions may
occur rapidly, as with fire, or over a period of many years, as with recruitment
of trees. Yet, in either case the system crosses a threshold between states
and cannot persist halfway through a transition
FOR MORE INFORMATION
Contact Bob Motroni via email at Robert.Motroni@fire.ca.gov or by phone at (916) 227-2657
Last edited on April 30, 1997 by Bob Motroni