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Book Evaluating Lodgepole Pine Pinus Contorta Affected by Mountain Pine Beetle Dendroctonus Ponderosae for Development of Wood cement Board

Download or read book Evaluating Lodgepole Pine Pinus Contorta Affected by Mountain Pine Beetle Dendroctonus Ponderosae for Development of Wood cement Board written by Sorin Andrei Pasca and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assessing the shelf life of wood from mountain pine beetle (Dendroctonus pondersoa [Hopkins]) killed lodgepole pine (Pinus contorta var. latifolia) in terms of its compatibility for Portland cement was examined. Two methods of assessment were used, based on the behavior of the exothermic chemical reaction of cement hydration, accounting for the difference between neat cement paste and wood-cement mixtures. A new wood-cement compatibility index meant to integrate current approaches was defined. No evidence was found of limitations in terms of beetle-killed heartwood wood compatibility with cement; except for the white rot infested samples. An outstanding physicochemical behavior characterized the mixtures of blue-stained sapwood and cement. Three compositions of ingredients were proposed for fabricating wood-cement boards that would meet the technical specifications given by the gypsum board standards with respect to strength and stiffness. In absence of pressing, the water was the factor used to regulate workability during the molding process.--P.ii.

Book Growth of Lodgepole Pine Stands and Its Relation to Mountain Pine Beetle Susceptibility

Download or read book Growth of Lodgepole Pine Stands and Its Relation to Mountain Pine Beetle Susceptibility written by S. A. Mata and published by . This book was released on 2003 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Periodic diameter and basal area growth were determined for partially cut stands of lodgepole pine at five locations over approximately 10 year periods. After cutting, average diameters in the partially cut plots generally increased by 0.8 inches or more, while average diameter in the uncut controls increased by 0.6 inches or less. Diameter growth in the partially cut plots was generally significantly greater than diameter growth in the controls. Individual tree growth is discussed in relation to potential susceptibility to mountain pine beetle infestation. Basal area decreased in three of the four GSL (growing stock level) 40 stands because of windthrow. Basal area generally increased >1.0 ft 2 / acre/year in partially cut plots except in the GSL 40 stands with substantial windthrow and one GSL 100 with an Armillaria infection pocket. Basal area increases in the control plots ranged from 0.2 to 1.1 ft 2 /acre/year, although the one control with a BA growth rate of 1.1 ft 2 /acre/year had a relatively low initial BA. Data from the stands are employed in the susceptibility rating methods of Amman et al.(1977), Shore and Safranyik (1992),and Anhold et al. (1996 to determine stand susceptibility and the results discussed in terms of general applicability of these methods to partially cut stands. Basal area growth is used to estimate the length of time required for various stand densities to reach specific susceptibility thresholds for mountain pine beetle infestation. Several of the GSL 40 stands are not projected to reach the susceptibility thresholds in 100 years because of windthrow. Barring mortality 1%,GSL 80 stands are estimated to reach the basal area threshold of 120 ft 2 per acre in

Book Lodgepole Pine Losses to Mountain Pine Beetle Related to Elevation

Download or read book Lodgepole Pine Losses to Mountain Pine Beetle Related to Elevation written by Gene D. Amman and published by . This book was released on 1973 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Change in Wood Quality and Fall Rate of Trees Up to Ten Years After Death from Mountain Pine Beetle

Download or read book Change in Wood Quality and Fall Rate of Trees Up to Ten Years After Death from Mountain Pine Beetle written by Kathy J. Lewis and published by . This book was released on 2009 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite the history of mountain pine beetle (Dendroctonous ponderosae Hopk.) outbreaks in British Columbia, including the outbreak in the mid 1980s that affected timber supply in the Quesnel Timber Supply Area, little was known about the post-mortality rate of deterioration of wood quality and quantity, and the rate of change in stand structure due to fall of dead trees. This study used dendrochronology to crossdate pine killed by mountain pine beetle to determine the exact year of mortality and to characterize decay and degradation in factors of wood quality and quantity over time.--Includes text from document.

Book Evaluation of In woods Chipping Options for Beetle killed Lodgepole Pine Wood

Download or read book Evaluation of In woods Chipping Options for Beetle killed Lodgepole Pine Wood written by Paul Alexandre Bicho and published by . This book was released on 2006 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the impact of using a portable in-woods chipper to chip red- and grey-stage mountain pine beetle-infested lodgepole pine (Pinus contorta) from the perspective of chip quality, pulping (thermomechanical and kraft) and pulp quality. In addition, the costs of chipping were determined and compared.

Book Decomposition and Carbon Loss in Lodgepole Pine Pinus Contorta Var Latifolia Wood Following Attack by Mountain Pine Beetle Dendroctonus Ponderosae

Download or read book Decomposition and Carbon Loss in Lodgepole Pine Pinus Contorta Var Latifolia Wood Following Attack by Mountain Pine Beetle Dendroctonus Ponderosae written by Benita Kaytor and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Mountain pine beetle (MPB)-killed wood remaining on the landscape is predicted to release significant amounts of carbon to the atmosphere as it decays. A lack of field-based wood decomposition data for validating simulation models reduces certainty in such predictions. Using a chronosequence approach, I quantified decomposition of MPB-killed wood to improve decay rate parameters. Changes in carbon density over time and climatic variability showed distinct patterns for bole position categories. Snag carbon density was similar to that of live lodgepole pine, and did not change considerably with time or climatic influences. Decay in suspended boles increased with summer precipitation, but declined with increasing summer temperature, suggesting decay in elevated boles is moisture-limited on warmer sites. Down boles decayed four times faster with increasing proximity to the soil than suspended boles, but did not clearly reflect climatic influences. Position of dead boles appears more important for wood decay than previously thought."--Leaf ii.

Book Wood Decay and Degradation in Standing Lodgepole Pine Pinus Contorta Var Latifolia Engelm Killed by Mountain Pine Beetle Dendroctonus Ponderosa Hopkins Coleoptera

Download or read book Wood Decay and Degradation in Standing Lodgepole Pine Pinus Contorta Var Latifolia Engelm Killed by Mountain Pine Beetle Dendroctonus Ponderosa Hopkins Coleoptera written by and published by . This book was released on 2006 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Proceedings Symposium on the Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle Kalispell MT July 12 14 1988

Download or read book Proceedings Symposium on the Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle Kalispell MT July 12 14 1988 written by and published by . This book was released on 1989 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Impact of Mountain Pine Beetle attacked Lodgepole Pine Logs on Veneer Processing

Download or read book Impact of Mountain Pine Beetle attacked Lodgepole Pine Logs on Veneer Processing written by Brad Wang and published by . This book was released on 2009 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: The issue of how to maximize the value recovery from beetle-attacked pine wood is critical to the wood panel industry in British Columbia. This paper discusses the pilot plant tests and mill trials that were conducted to quantify the impact of using mountain pine beetle (MPB)-attacked lodgepole pine (Pinus contorta Douglas) wood on green veneer processing to determine of it makes economic sense to sort and process MPB logs separately from normal logs of SPF (spruce-lodgepole pine-alpine fir) mix for plywood manufacturing.--Includes text from document.

Book Association of an Endemic Mountain Pine Beetle Population with Lodgepole Pine Infected by Armillaria Root Disease in Utah

Download or read book Association of an Endemic Mountain Pine Beetle Population with Lodgepole Pine Infected by Armillaria Root Disease in Utah written by Borys M. Tkacz and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Genetic Variation of Lodgepole Pine Pinus Contorta Var Latifolia Engelm Chemical and Physical Defenses that Affect Mountain Pine Beetle Dendroctonus Ponderosae Attack and Tree Mortality

Download or read book Genetic Variation of Lodgepole Pine Pinus Contorta Var Latifolia Engelm Chemical and Physical Defenses that Affect Mountain Pine Beetle Dendroctonus Ponderosae Attack and Tree Mortality written by Daniel Stephen Ott and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant secondary chemistry is determined by both genetic and environmental factors, and while large intraspecific variation in secondary chemistry has been reported frequently, the levels of genetic variation of many secondary metabolites in forest trees in the context of potential resistance against pests have been rarely investigated. We examined the effect of tree genotype and environment/site on the variation in defensive secondary chemistry of lodgepole pine, Pinus contorta var. latifolia, against the fungus, Grosmannia clavigera (formerly known as Ophiostoma clavigerum), associated with the mountain pine beetle, Dendroctonus ponderosae. Terpenoids were analyzed in phloem samples from 887, 20-yr-old trees originating from 45 half-sibling families planted at two sites. Samples were collected both pre- and post-inoculation with G. clavigera. Significant variation in constitutive and induced terpenoid compounds was attributed to differences among families. The response to the challenge inoculation with G. clavigera was strong for some individual compounds, but primarily for monoterpenoids. Environment (site) also had a significant effect on the accumulation of some compounds, whereas for others, no significant environmental effect occurred. However, for a few compounds significant family x environment interactions were found. These results suggest that P. c. latifolia secondary chemistry is under strong genetic control, but the effects depend on the individual compounds and whether or not they are expressed constitutively or following induction.