| Has DSS development
|
HARVEST.Description of DSS development +
|
| Has acronym
|
Timber Harvest Simulation Model +
|
| Has country
|
United States +
|
| Has decision making dimension
|
More than one decision maker +
|
| Has decision support techniques
|
HARVEST.Decision support techniques +
|
| Has description
|
HARVEST was designed as a strategic resear … HARVEST was designed as a strategic research and planning tool, allowing assessment of the spatial pattern consequences of broad timber management strategies. The model is well suited to evaluate alternative strategies, providing comparable predictions about how the alternatives affect the age (or successional stage) distribution of the forest, the spatial distribution of forest interior and edge habitats, and the patch structure of the resulting forest landscape. With HARVEST, the object is not to find a scheduling solution (i.e., determining the order in which individual stands should be harvested), but to assess the spatial pattern consequences of general management strategies. HARVEST has been shown to generate patterns similar to those produced by timber management (Gustafson and Crow 1999).
HARVEST simulates harvest practices that reset the age of forested sites to zero. This includes even-aged timber harvest techniques (e.g., clearcutting, shelterwood, seed tree techniques) and uneven-aged group selection. It is not capable of simulating single tree selection because these treatments do not predictably change forest age. HARVEST allows the user to interactively simulate harvest by forest type and management area. Management Areas are relatively large, multi-stand areas that are to be managed by specific objectives. The user specifies harvest parameters (such as harvest size, rotation age, green-up interval), for a management area and forest type. The process may be repeated for multiple time steps.
Because HARVEST is a stochastic simulation model, you will get a somewhat different result each time you run a given set of parameters on the same set of maps (if you use a different random number seed). However, this is also true in real life, where you will get different management plan implementations if you give different project-level planners the same task.
HARVEST is a powerful tool to compare the spatial pattern expected under alternative management scenarios. These alternatives may differ in the boundaries and objectives of management areas, the intensity of harvest (area cut), the size of harvest units, the dispersion of openings, or some combination.
HARVEST ignores many forest conditions and lots of simplifying assumptions were made. It should not be used to support project-level planning except as a heuristic (what-if?) device.
Assumptions:
1) Forest age replace all other factors of decision making of harvest in reality such as stocking density, size class, site conditions, accessibility and operability.
2) HARVEST randomly selects suitable stands.
3) Forest type of a stand is assigned based on the type that is most abundant within the stand.
4) Forest succession processes are not simulated.
5) Stand boundaries do not change.ulated.
5) Stand boundaries do not change. +
|
| Has flag
|
N/A +
|
| Has forest management goal
|
forest fuel harvesting +
, forest transformation +
, landscape quality +
, conservation +
, silvicultural regime +
|
| Has full name
|
HARVEST for Windows +
|
| Has goods and services dimension
|
Non-market services +
|
| Has knowledge management processes
|
HARVEST.Knowledge management process +
|
| Has manual
|
true +
|
| Has modelling scope
|
Forest indicators +
|
| Has number of real-life applications
|
N/A +
|
| Has number of users
|
N/A +
|
| Has objectives dimension
|
Multiple objectives +
|
| Has software
|
HARVEST.Software +
|
| Has spatial context
|
Non spatial +
, Spatial with neighbourhood interrelations +
|
| Has spatial scale
|
Stand level +
|
| Has support for social participation
|
HARVEST.Support of social participation +
|
| Has technical documentation
|
true +
|
| Has temporal scale
|
Long term (strategic) +
|
| Has typical use case
|
HARVEST allows the user to interactively simulate harvest activities that are targeted to forest type and management area. How much of timber should I harvest in tis age class if I wish have every year same revenues from harvest? +
|
| Has user profile
|
Non-industrial private owners +
, forest owners associations +
|
| Has utilisation in education
|
used by students +
|
| Has website
|
http://www.nrs.fs.fed.us/tools/harvest/ +
|
| Has wiki contact e-mail
|
egustafson@fs.fed.us +
|
| Has wiki contact person
|
Eric Gustafson and Luke Rasmussen +
|
| Supports silvicultural regime
|
even-aged +
, uneven-aged/natural regeneration +
, uneven-aged/plantation +
|
| Supports tree species
|
No +
|
| Has queryThis property is a special property in this wiki.
|
HARVEST +
, HARVEST +
, HARVEST +
, HARVEST +
|
| Categories |
USA DSS +
, DSS +
|
| Modification dateThis property is a special property in this wiki.
|
22 January 2015 00:06:32 +
|
