Global ETD Search

11	The effect of forest stand thinning on selected strength and pulp-ing characteristics of Douglas-fir / Johnson, Donna A. January 1981 (has links) Thesis (M.S.)--Oregon State University, 1982. / Typescript (photocopy). Includes bibliographical references (leaves 50-52). Also available on the World Wide Web. Douglas fir. Forest thinning.
12	Prebunching with a low investment skyline yarder in thinnings / Keller, Robert Richard. January 1979 (has links) Thesis (M.S.)--Oregon State University, 1980. / Typescript (photocopy). Includes bibliographical references. Also available on the World Wide Web. Forest thinning. Logging, Skyline.
13	Effekt av gödsling och gallring på mö̈belvirke av furu Söderman, Robin January 2015 (has links) This thesis is about the effects of fertilizing and thinning on furniture timber from redwood. Interviews of furniture manufactures have been made and observing of timber from the Swedish fertilizing and thinning trails. The result from the interviews showed which properties that is important for the furniture manufactures and then the result from the observation showed which type of management of the forest that gave the most timber that had those properties. fertilizing thinning furniture manufacturer
14	Röjningsformen och stamantalets effekt på höjd- och diametertillväxt i toppröjda och konventionellt röjda tallbestånd. / The effect of precommercial thinning methods and number of stems on height and diameter growth in topped and conventional precommercial thinned pine stands. Berglund, Marie January 2015 (has links) Topping is a precommercial thinning (PCT) method where secondary stems are cut higher above the ground compared to conventional PCT. The secondary stems continue to live for a period and are supposed to compete with the main stems and promote their quality. The objective of the study was to compare the effect of PCT on height and diameter growth between topping and conventional PCT. The study also analysed the relationship between height and diameter growth and the number of stems after PCT. Nine topped stands and six conventional precommercially thinned stands were visited between February 28th and March 5. One sample plot per hectare was laid out in the investigated stands. In every sample plot the number of stems was counted and five main stems were measured for height, height growth since PCT, diameter and diameter growth since PCT. The results showed significantly higher effect on height growth after topping as compared to conventional PCT but no significant difference in the effect of diameter growth between topping and conventional PCT. After PCT the H/D quote (height/diameter quote) was higher (less taper) in topped stands and lower (larger taper) in conventional PCT. topping precommercial thinning taper
15	Tree growth and understory production after thinning ponderosa pine in Arizona Beets, Martin Levi, 1943- January 1971 (has links) No description available. Ponderosa pine. Forest thinning.
16	An efficient optimizing model for determining thinning regime and rotation age using the stand projection system growth simulator / Yoshimoto, Atsushi. January 1987 (has links) Thesis (M.S.)--Oregon State University, 1988. / Typescript (photocopy). Includes bibliographical references (leaves 68-69). Also available on the World Wide Web. Forest management Forest thinning.
17	Physiological responses of sun and shade foliage in thinned and unthinned ten-year-old loblolly pine stands / Nowak, Jaroslaw, January 1991 (has links) Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 66-71). Also available via the Internet. Loblolly pine Forest thinning
18	Interacting effects of stand density, site factors, and nutrients on productivity and productive efficiency of Douglas-fir plantations in the Oregon Cascades / Velazquez-Martinez, Alejandro. January 1990 (has links) Thesis (Ph. D.)--Oregon State University, 1991. / Typescript (photocopy). Includes bibliographical references (leaves 131-142). Also available on the World Wide Web. Douglas fir Forest thinning
19	Young stand thinning in Western Oregon : cost comparison of harvesting alternatives and comparison of time study techniques / Hossain, Mohammad Mozaffar. January 1998 (has links) Thesis (Ph. D.)--Oregon State University, 1998. / Typescript (photocopy). Includes bibliographical references (leaves 150-152). Also available on the World Wide Web. Forest thinning Douglas fir
20	Production and cost analysis of a helicopter thinning operation in the Oregon Coast Range and comparison to HELIPACE production estimates / Born, Robert Gregory. January 1995 (has links) Thesis (M.F.)--Oregon State University, 1995. / Typescript. Abstract. Includes bibliographical references (leaves 52-53). Also available on the World Wide Web. Logging, Aerial Forest thinning.

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