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Production rates and costs for yarding by cable, balloon, and helicopter compared for clearcuttings and partial cuttings

Creator:: Dykstra, Dennis P. and Oregon State University. Forest Research Laboratory
Abstract:: This report supplements Research Bulletin 18 (1975) of the Forest Research Laboratory, School of Forestry, Oregon State University. Bulletin 18 summarized analyses of data for the first field season of the Pansy Basin Study. This Bulletin extends those analyses to the second, and final, field season. Time-study observations during the...
Resource Type:: Technical Report
Full Text:: , and Helicopter Compared for Clearcuttings and Partial Cuttings Dennis P. Dykstra Research Bulletin

Production rates and costs for cable, balloon, and helicopter yarding systems in old-growth Douglas-fir

Creator:: Dykstra, Dennis P. and Oregon State University. Forest Research Laboratory
Abstract:: This report describes initial results of a yarding time study for the Pansy Basin Study, a cooperative research project designed to test the performance of skylines, balloons, and helicopters operating under various conditions of timber and terrain, and over a range of silvicultural and landscape design prescriptions. Observations during the...
Resource Type:: Technical Report
Full Text:: in Old-Growth Douglas-fir COMPACT Dennis P. Dykstra Research Bulletin 18 September 1975 Forest

Fire weather studies on Bald Mountain

Creator:: Berg, Alan B., Lowry, William P., 1927-, and Oregon Forest Lands Research Center
Resource Type:: Technical Report
Full Text:: . Lookout with Fenno Mt. Lookout Bald Mt Lookout with Valsetz Guard Station DEGREE OF ACCEPTABLE AGREEMENT

Factors related to variation of specific gravity in young-growth Douglas fir

Creator:: McKimmy, Milford D. and Oregon Forest Research Center
Resource Type:: Technical Report
Full Text:: Young-Growth Douglas Fir Bulletin 8 • Acknowledgments The author wishes to express his

Vegetative competition, site-preparation, and pine performance : a literature review with reference to southcentral Oregon

Creator:: Ross, Darrell W., Walstad, John D., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: scientific community, and the general public. As a research bulletin, this publication is one of a series

Response of young Douglas-fir to 16 years of intensive thinning

Creator:: Tappeiner, J. C. (John C.), Bell, John F., Brodie, J. Douglas (John Douglas), 1938-, and Oregon State University. Forest Research Laboratory
Abstract:: A 20-year-old Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] stand in the Oregon Coast Range was thinned from about 1,700 to about 350 trees/ac. Subsequent thinnings, under eight different regimes, occurred at ages 23, 27, 30, and 32. Average net periodic cubic-volume growth was strongly influenced by thinning regime, varying from about...
Resource Type:: Technical Report
Full Text:: RESEARCH BULLETIN 38 JULY 1982 RESPONSE OF YOUNG

Effects of projected yields and initial inventories on harvest schedules of Douglas-fir

Creator:: Vomocil, Marc G., Tedder, Philip L., and Oregon State University. Forest Research Laboratory
Abstract:: Comparisons were made to determine how the uncertainty of initial inventories and projected yields affect harvest schedules for Douglas-fir. Results indicate that short-run harvests are most affected by errors in initial inventory, with the effect being less than the size of the error. Long-run harvests are most affected by yield...
Resource Type:: Technical Report
Full Text:: RESEARCH BULLETIN 44 COMPACT 0 AUGUST 1983 EFFECTS

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

Creator:: Hann, David W., Wang, Chao-huan, and Oregon State University. Forest Research Laboratory
Abstract:: Models of stand growth and yield must include an estimate of mortality. For individual-tree/distance-independent growth-and-yield models. it is necessary (1) to predict the probability of death of individual trees and (2) to keep stand projections within reasonable biological limits (e.g., the maximum basal area that the stand can achieve). In...
Resource Type:: Technical Report
Full Text:: Research Bulletin 67 SD 144 .07 A45 no.67 cop. 2

Evaluation of factors affecting natural reproduction of forest trees in central western Oregon

Creator:: Bever, Dale N.
Abstract:: This study was started in 1947 to investigate the value of various types and quantities of seed source in the establishment of reproduction on cutover land, and to determine the apparent effects of various man-made and natural factors upon the rate of restocking. The man-made and natural factors to be...
Resource Type:: Technical Report
Full Text:: reason this area has not re- stocked? [5] 6 RESEARCH BULLETIN No. 3 will, if provided with

Influence of red alder on fertility of a forest soil: microbial and chemical effects

Creator:: Bollen, Walter Beno, 1896- and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: Research Bulletin 12 October 1967 Forest Research Laboratory School of Forestry OREGON STATE UNIVERSITY

ScholarsArchive@OSU

Production rates and costs for yarding by cable, balloon, and helicopter compared for clearcuttings and partial cuttings

Production rates and costs for cable, balloon, and helicopter yarding systems in old-growth Douglas-fir

Fire weather studies on Bald Mountain

Factors related to variation of specific gravity in young-growth Douglas fir

Vegetative competition, site-preparation, and pine performance : a literature review with reference to southcentral Oregon

Response of young Douglas-fir to 16 years of intensive thinning

Effects of projected yields and initial inventories on harvest schedules of Douglas-fir

Mortality equations for individual trees in the mixed-conifer zone of southwest Oregon

Evaluation of factors affecting natural reproduction of forest trees in central western Oregon

Influence of red alder on fertility of a forest soil: microbial and chemical effects

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