North Central Research Station
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North Central Research Station (651) 649-5000 |
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Publications and Products - Software
| ACORn | ACORn (A Comprehensive Ozark Regeneration simulator) is a computer program that can help forest managers predict the number and species of trees that will regenerate following harvest in upland oak stands in the Ozark Highlands of Missouri and adjacent states. | ||||||||
| ASPEN | ASPEN is an empirical simulation model that projects the growth and yield of aspen (Populus tremuloides and P. tremula) stands from establishment to breakup. The model incorporates the system of equations developed from growth and yield data from throughout the range of P. tremuloides and P. tremula; the model should thus be applicable throughout the circumboreal region. The model runs on an annual time step and predicts total yields in number of trees, basal area, and biomass, as well as merchantable yields in cubic feet and cords for user-specified utilization standards, and in Scribner board feet. Outputs are in the form of stand tables and stocking guides. The model supports silvicultural operations such as thinning, as well as management for multiple products. | ||||||||
| FIA Map Maker |
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| FIA Table Generator | Forest Inventory and Analysis (FIA) research units have participated in establishing a nationwide database of common forest resource data. For detailed information view The Eastwide Forest Inventory Data Base: User's Manual. and/or The Westwide Forest Inventory Data Base: User's Manual. | ||||||||
| GIS-FIA Model | The GIS-FIA Model was developed by Michigan Technological University in cooperation with the North Central Forest Inventory and Analysis (FIA) research unit. The GIS-FIA Model is a geographic information system program that summarizes FIA data. The model runs from a project file in ArcView under the Windows98/NT operating system. | ||||||||
HARVEST is a timber harvest allocation model that was constructed to allow the input of specific rules to allocate forest stands for even-age harvest (clearcuts and shelterwood) and group selection, using parameters commonly found in National Forest Plan standards and guidelines. The model produces landscape patterns that have spatial attributes resulting from the initial landscape conditions and potential timber management activities. Modeling this process allows experimentation to link variation in management strategies with the resulting pattern of forest openings and the distribution of forest age classes. The updated HARVEST Version 6.1 was released in Summer 2005. HARVEST Lite is the educational version of the software. |
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| Quick-Silver | Fast and flexible program for economic analysis of long-term, on-the-ground resource management projects for forest managers. (Windows version) | ||||||||
| RPGrow$ | A red pine growth and analysis spreadsheet for the Lake States. | ||||||||
| TWIGS-Central States | TWIGS is a DOS program used to simulate growth and yield for forests in the North Central region. It also includes management and economic analysis components. Two variants are available: Central States (Indiana, Illinois, and Missouri) and Lake States (Michigan, Minnesota, and Wisconsin). See Gen. Tech. Rep. NC-125 (Miner et al. 1988. A guide to the TWIGS program for the North Central United States. Gen. Tech. Rep. NC-125, St. Paul, MN: USDA Forest Service, North Central Forest Experiment Station, 105p.) for details on running the program. | ||||||||
| TWIGS-Lake States |
USDA Forest Service - North Central Research Station
Last Modified: Wednesday, 29 March 2006