Treesearch

A study to estimate dispersed recreational use on three Michigan public forests was conducted April-December 1992. Use was estimated to be 9.3 hours per acre over the period. Travelers to the forests accounted for 45% of the use and inholders within the forests who did not drive a car or truck onto the public lands accounted for 55%. Hunting, offroad vehicle use and hiking/walking were the most frequently cited principle dispersed activities.

The lack of procedures for evaluating computer numerically controlled (CNC) routers makes it difficult for the buyers and sellers of these machines to communicate when trying to determine the best machine for a given production situation. This report provides procedures to evaluate specific machine capabilities as related to production situations. By using the procedures, both the buyers and the sellers will know how the evaluations were made and what the results mean.

The ROugh Mill RIP-first simulator (ROMI-RIP) is a computer software package for IBM compatible personal computers that simulates current industrial practices for gang-ripping lumber. This guide shows the user how to set and examine the results of simulations regarding current or proposed mill practices. ROMI-RIP accepts cutting bills with up to 300 different part sizes. Plots of processed boards are easily viewed or printed. Detailed summaries of processing data (number of rips and crosscuts) and yields (single boards or entire board files) can be viewed or printed.

The Bowl Research Natural Area is a 206-ha old-growth forest in the White Mountain National Forest of New Hampshire. Elevations range from approximately 580 m along Wonalancet Brook to 1,215 m at the summit of Mt. Whiteface. Vascular vegetation in four Ecological Land Types (ELT's) of the Bowl was characterized on 12 plots and during qualitative meander surveys. Several microhabitats within the ELT's, including sidehill seeps, ledges, canopy openings, and a well-traveled trail, were also inventoried. The vegetation structure and species composition for each ELT and microhabitat are...

A model of physical and chemical climate was developed for New York and New England that can be used in a GIs for integration with ecosystem models. The variables included are monthly average maximum and minimum daily temperatures, precipitation, humidity, and solar radiation, as well as annual atmospheric deposition of sulfur and nitrogen. Equations generated from regional data bases were combined with a digital elevation model of the region to generate digital coverages of each variable.

This programmer's support document describes the Gypsy Moth Stand-Damage Model interface management system. Management of stand-damage data made it necessary to define structures to store data and provide the mechanisms to manipulate these data. The software provides a user-friendly means to manipulate files, graph and manage outputs, and edit input data. The interface was built using pop-up windows, menuing systems, text editing and validation, mouse support, and context sensitive help. The interface is written in the C language for DOS microcomputers.

The Stand-Damage Model (a component of the Gypsy Moth Life System Model) simulates the growth of a mixed hardwood forest and incorporates the effects of defoliation by gypsy moth or tree harvesting as prescribed by the user. It can be used to assess the damage from expected defoliation, view the differences between various degrees of defoliation, and describe the effects of defoliation on a stand under user-defined silvicultural prescriptions and defoliation scenarios. This user's guide provides the information necessary to install and use the model software on DOS microcomputers. The...