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Showing 1 to 20 of 41 for “"Liriodendron tulipifera"”.
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Microbial ecology of freshly sawn yellow-poplar lumber ( Liriodendron tulipifera L.) in two seasons
… ecology of green lumber of yellow-poplar (Liriodendron tulipifera L.) during storage as a precursor to the development of biological control agents for use on freshly sawn lumber. (Abstract shortened by UMI.).
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Factors influencing basal area growth of yellow-poplar ( Liriodendron tulipifera L.) in central West Virginia
… to evaluate basal area growth of yellow-poplar (Liriodendron tulipifera L.) as related to four topographic factors (aspect, slope position, steepness, and landform), two competition variables (basal area per acre and trees per acre) and four tree characteristics (age, diameter, total height, and …
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Assessment of Genetic Variation of Acer rubrum L. and Liriodendron tulipifera L. Populations in Unmanaged Forests of the Southeast United States
Acer rubrum L. and Liriodendron tulipifera L. are prolific throughout their ranges in the Southeastern U.S. and also have increasingly important roles in forestry and wood products in this region. The relatively low density and intermediate strength of the wood makes them versatile for use in many …
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Effect of Minimum Suppression and Maximum Release Years on Compression Parallel to Grain Strength and Specific Gravity for Small-sized Yellow-poplar (Liriodendron tulipifera L.) Specimens
… and ring width or growth rate in yellow-poplar (Liriodendron tulipifera L.). Because most mechanical properties of wood are also closely related to specific gravity, it would thus be of interest to learn how minimum suppression and maximum release years' evidence that can be extracted from radial …
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Changes in stand structure and species diversity following clearcutting in central Appalachian hardwoods
… stable following clearcutting. Species such as Liriodendron tulipifera, Betula lenta , and Robinia pseudoacacia increased in importance in the postharvest stands, whereas Quercus rubra, Carya spp., and Fagus grandifolia decreased. The overstory of the future stand will be dominated by …
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Vegetation distribution and site relationships in an Appalachian oak forest in southwest Virginia
… importance were Acer rubrum, Quercus rubra, Liriodendron tulipifera, Quercus prinus, Acer saccharum and Quercus coccinea. Most site factors of importance, including elevation, lithology, landform, slope position, steepness, exposure, and soil depth appeared to influence the distribution of …
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Compatible taper and volume equations for yellow-poplar in West Virginia
Yellow-poplar (Liriodendron tulipifera L.) is an important source of raw material for the forest products industry in West Virginia. Accurate taper and volume functions are an important component of most inventory systems for use in estimating upper stem diameter, form, and tree volume. Compatible …
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Changes in wood-flake properties in relation to heat, moisture, and pressure during flakeboard manufacture
… Two hundred and fifty yellow-poplar (<u>Liriodendron tulipifera</u>) test flakes were consolidated within the face and core of flakeboard mats and recovered. Their individual pre- and post-pressing thickness and specific dynamic bending modulus values were determined and compared with …
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The effect of hot-pressing parameters on resin penetration and flakeboard layer properties
… and the layer properties of yellow poplar (<i>Liriodendron tulipifera</i>) flakeboard were investigated to determine how they were influenced by various pressing parameters. The evenness of penetration was found to be a function of the natural variability of the wood and was not influenced by …
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Effects of Light and Macroinvertebrate Consumers on Detrital Microbial Biofilms in Streams
… caddisfly <em>Pycnopsyche</em> sp. on <em>Liriodendron tulipifera</em> litter biofilms in experimental streams under light or darkness. I measured litter-associated algal, fungal and bacterial biomasses and production rates, as well as litter decomposition, over 49 days. Both experiments …
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Experimental determination of pressures and velocities in plant xylem
… a perforation plate found in the plant species Liriodendron tulipifera. In the third experiment, a 20-pore perforation plate was used to match the vessels of Liquidambar styraciflua. This plate was placed at an angle of 12.7 degRees To verify the flow behavior, the experimental results were …
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Investigating the Surface Energy and Bond Performance of Compression Densified Wood
… treated and control yellow-poplar (Liriodendron tulipifera). Bond performance was studied using opening mode double cantilever beam fracture testing and cyclic boiling of one half of all fracture samples. Phenol formaldehyde film (PF-film) and polymeric diphenylmethane diisocyanate …
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The economic feasibility of producing yellow-poplar oriented strandboard in the Appalachian region
… in order to determine whether yellow-poplar (Liriodendron tulipifera Michx.), has the economic and technical potential to be manufactured and marketed as oriented strandboard (OSB) in Elkins, West Virginia and Frederick, Maryland. The estimated annual excess growth of yellow-poplar near Elkins …
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Successive Land Surveys as Indicators of Vegetation Change in an Agricultural Landscape
… locust (Robinia pseudoacacia L.), yellow poplar (Liriodendron tulipifera L.), and scarlet oak (Quercus coccinea Muenchh.). The central change was a steady decline in white oak, probably due to the absence of fire and changes in soil properties. Chestnut replaced white oak as the dominant species, …
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Using dendrochronology to identify species-specific ice storm damage in Delaware
… loblolly pine [ Pinus taeda], and yellow poplar [Liriodendron tulipifera ]) affected by the ice storm. The objectives of this study are to: (1) explore the species-specific growth rates and responses to the ice storm; and (2) determine which of the four species is best suited to provide …
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Effect of a Water Treatment BMP on Nutrient Spiraling and Leaf Litter Breakdown in an Urban Stream
… litter decomposition using tulip tree leaves {Liriodendron tulipifera) in 1mm mesh bags deployed upstream (1 site) and downstream (3 sites) of the BMP for 10 weeks (sampled bi-monthly, 3 replicates per site). I analyzed nitrate, phosphate, and nitrite concentrations bi-monthly …
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An Improved Method for the Fracture Cleavage Testing of Adhesively-Bonded Wood
… DCB specimens were fabricated from yellowpoplar (Liriodendron tulipifera) sapwood. The sensitivity of this methodology showed significant differences in fracture performance as the degree of cure increased for a phenol formaldehyde adhesive, and yielded maximum strain energy release rate (SERR) …
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Watershed and Streamside Management Zone Characterization in the Allegheny Plateau of West Virginia
… overstory tree species found are Acer saccharum, Liriodendron tulipifera, Fagus grandifolia, Tilia americana, Betula lenta, snags, Betula lutea, Fraxinus spp., and Acer rubrum. The overall average streamwater temperature is 13°C. Highest daily temperature occurred in the mid-afternoon and lowest …
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Forest Dynamics Of Two Multi-Aged Hemlock-Mixed Mesophytic Forests In The Northern Cumberland Plateau, Kentucky
… both study sites was T. canadensis, followed by Liriodendron tulipifera (tulip poplar). Like many forests across the eastern United States, Acer rubrum (red maple) had the greatest seedling density at both study sites. Nearly all T. canadensis trees were healthy with no visible signs of HWA. The …
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