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Departmental Publications, Forest Resources and Environmental Conservation

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https://hdl.handle.net/10919/23968
Newsletters, annual reports, and other departmental publications

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Browsing Departmental Publications, Forest Resources and Environmental Conservation by Author "Farrar, Kenneth D."

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    An Analysis of Several Alternatives to Oil As an Industrial Fuel
    Kluender, Richard A.; Reisinger, Thomas W.; Farrar, Kenneth D.; Stuart, William B. (Virginia Tech. Division of Forestry and Wildlife Resources, 1981-10)
    This paper presents an analysis of some significant factors that should be evaluated when considering alternatives to oil burning boilers. Managers contemplating using or increasing the use of wood for energy should find the analysis particularly pertinent. A fundamental assumption of the analysis is that additional boiler capacity is to be added to an existing power generating facility. The method of analysis provides a yearly cash flow stream that tells how much better off the installation would be with an alternative to oil. A logical extension of this is the ran king of alternatives from most to least attractive.
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    Simulation of Individual Tree Growth and Stand Development in Loblolly Pine Plantations on Cutover, Site-Prepared Areas
    Burkhart, Harold E.; Farrar, Kenneth D.; Amateis, Ralph L.; Daniels, Richard F. (Virginia Tech. Division of Forestry and Wildlife Resources, 1987)
    A forest stand simulator, PTAEDA2, was developed to model growth in loblolly pine (Pinus taeda L.) plantations on cutover, site-prepared areas. Individual trees were used as the basic growth units. In PTAEDA2, trees are assigned coordinate locations in a stand and 'grown' annually as a function of their size, the site quality, and the competition from neighbors. Growth increments are adjusted by stochastic elements representing genetic and microsite variability. Mortality is generated stochastically through Bernouli trials, Subroutines were developed to simulate the effects of hardwood competition, thinning, and fertilization on tree and stand development. Options for varying the spatial location of trees to mimic randomness in machine and hand planting operations are also included.