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Creator:: Arney, James Douglas, 1941-
Abstract:: This study was initiated to determine the accuracy and limits of the height-accumulation method of measuring tree volume and surface area for Pacific Northwest second-growth trees. Thirty trees were selected from various thinning treatments in a 55 year old Douglas-fir forest. Each tree was measured with the highly accurate Barr...
Resource Type:: Masters Thesis

Creator:: Arney, James Douglas, 1941-
Abstract:: A mathematical model has been developed to describe the growth of individual Douglas-fir trees under a variety of stand conditions and management schedules. The model was developed using empirical data from open-grown trees and reducing growth capacities of height, stem, and crown as functions of intertree competition indices. Any initial...
Resource Type:: Dissertation

Creator:: Beuter, John H., Arney, James Douglas, 1941-, and Oregon State University. Forest Research Laboratory
Abstract:: Considerable interest has arisen in the relation between timber-selling procedures and the accomplishment of timber-selling objectives on public lands in the West. Procedures of public agencies for measuring and paying for timber by log scale or by lump sum have attracted special attention. There are significant differences in the two...
Resource Type:: Research Paper
Full Text:: in Western Oregon John H. Beater James D. Arney Research Paper 12 September 1972 Forest Research

Creator:: Brodie, J. Douglas (John Douglas), 1938-, Black, Hugh C., 1941-, Dimock, Edward J., Evans, James, 1930-, Kao, Chiang, Rochelle, James Arthur, 1942-, and Oregon State University. Forest Research Laboratory
Abstract:: Regression models of height growth and survival were fitted to aggregate data for trees, protected and not protected from animal damage, that had been surveyed on Douglas-fir and ponderosa pine plantations in Oregon and Washington. Animal damage significantly affected both height and survival. Dynamic programming analysis-using both soil expectation (Se)...
Resource Type:: Technical Report
Full Text:: Chiang Kao James A. Rochelle of of fore °-a allis, :j. bulletin a age eons cation Since 1941, the

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