Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 52 for “"pine trees"”.
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Volume and taper equations for loblolly pine trees using dimensional analysis
… equation was developed. Data from loblolly pine trees grown in natural stands in the Coastal Plain of North Carolina and the Coastal Plain and Piedmont areas of Virginia were used to estimate the parameters for these volume equations. A dimensionally compatible volume equation is shown to be …
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Survival equations for loblolly pine trees in cutover, site- prepared plantations
… (total height/height of dominant and co-dominant trees) and CI (competition index) was compared with the survival model applied in a published distance-dependent model PTAEDA. The logistic model with CR, HH and DD (quadratic mean diameter/dbh) was compared with the survival model already used in a …
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Diameter/basal area increment equations for loblolly pine trees in cutover, site-prepared plantations
… area increment equations for loblolly pine trees in thinned and unthinned plantations on cutover, site-prepared areas. Results indicated that one set of coefficients was sufficient to estimate individual tree growth (for the three year period following thinning) on lightly thinned and …
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Modeling the diameter and locational distributions of branches within the crowns of loblolly pine trees
Crown structure for 9- to 30-year-old loblolly pine was quantified via analysis of branch diameters and location, both along and around the bole, using observational data from 68 trees. The trees analyzed ranged in size from 11.1 to 31.6 cm in DBH and from 8.30 to 25.67 m in height, and were …
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Diameter and height increment and mortality functions for loblolly pine trees in thinned and unthinned plantations
… was applied to two existing models for loblolly pine (Pinus taeda) in cutover site-prepared plantations. A site index equation for predicting mean total height of dominant and co-dominant trees and a diameter increment model were developed to incorporate the thinning response variable. New fits …
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Memories of My Hometown
… Memories of My Hometown, has two movements: I. Pine Trees Standing on the Snowy Mountain; II. Passionate Land. After studying abroad for many years, I yearned for my hometown in China and hoped to express personal attachment to my hometown through this piece. The first movement shows the …
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Modeling Green Weight of Loblolly Pine (Pinus taeda L.)
… per unit volume relationships for loblolly pine trees have not been studied extensively and models for predicting weights across broad geographic areas are not readily available. In this regard three basic interrelated issues were addressed in this study: 1) an examination of weight per unit …
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A Shelter in El Salvador
… two bathrooms sits in a landscape of towering pine trees, lush orange groves, and tall grasses. Approaching from the west, a stepped lava tock garden wall protects the terraces of gravel and grass that bound and hold the concrete walls of the house. Within these wall an architectural game of …
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Modeling canopy structure effects on loblolly pine growth
… and their influence on growth of loblolly pine (Pinus taeda L.) plantations. Foliage distribution, crown hydraulic architecture, and the effect of chronological changes in canopy structure on stand development were explored as possible components of a future process-based model intended for …
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Destination of Isotopic Nitrogen Fertilizer Under Varying Herbicide Regimes in a Mid-Rotation Loblolly Pine (Pinus taeda L.) Plantation in the Piedmont of Virginia, USA
… most common silvicultural treatments in loblolly pine (Pinus taeda L.) plantations in the southeastern United States. Competing vegetation is commonly thought to sequester fertilizer nitrogen (N) and reduce the potential growth response to a mid-rotation fertilization treatment. This experiment …
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Soil weathering under mountain pine beetle killed trees, Grand County, Colorado
… in soil weathering processes under mountain pine beetle killed trees, as compared to soil weathering under living trees. As pine beetle (Dendroctonus pondersoae) infected trees die, pine needles are shed and accumulate on the forest floor, which may lead to changes in soil pH and soil …
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Distribution of dry matter production in twenty families of Virginia pine (Pinus virginiana)
… seed was collected from 20 selected Virginia pine trees. The trees were selected in pairs of well- and poorly-pruned trees. Progeny (half-sib) derived from the 20 parent trees were sampled, at age nine, to determine if differences existed among the 20 families in the distribution of dry …
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A Tree Ring Based Fire History of the Clover Mountains, Lincoln County, Nevada
… County, Nevada. Using fire scars from ponderosa pine trees I reconstructed fire history back to 1785 and examined fire frequency, fire extent and fire severity through time. Historically, the Clover Mountains were dominated by frequent (<10 year mean return interval), low severity fires. Fires …
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To Save the World: The Untold Stories of Memorial Row
On Arbor Day, 1919, 32 Ponderosa Pine trees were planted on the campus of the University of Montana to commemorate individuals associated with the university who died while serving Montana in World War I. Collectively called Memorial Row and situated among present-day McGill and Don Anderson Halls …
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To Save the World: The Untold Stories of Memorial Row
On Arbor Day, 1919, 32 Ponderosa Pine trees were planted on the campus of the University of Montana to commemorate individuals associated with the university who died while serving Montana in World War I. Collectively called Memorial Row and situated among present-day McGill and Don Anderson Halls …
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Stress detection in loblolly pine using relative apparent temperatures
The hypothesis that stressed loblolly pine (Pinus taeda L.) could be distinguished from non-stressed loblolly pine by increased foliage temperatures was tested. The foliage temperatures of seedlings and trees were measured with an AGA Thermovision 680 system, imported by the AGA Corporation, …
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The Effect of Mountain Pine Beetle Induced Tree Mortality on Home Values in the Colorado Front Range
Throughout the past decade American pine forests have experienced an epidemic of Mountain Pine Beetle (MPB) induced tree mortality. This thesis estimates the losses to home values caused by deteriorating forest quality in the Front Range Counties of Larimer and Boulder Colorado. We employ a repeat …
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Spatial Patterns in a 40-year-old Slash Pine (Pinus elliottii Engelm.) Forest in the Coastal Plain of South Carolina
… quality, a weak relationship between large pine trees and soil nitrogen patterns, and a general homogeneity of the stands.
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LONG-TERM OVERSTORY VEGETATION RESPONSES TO PRESCRIBED FIRE MANAGEMENT FOR LONGLEAF PINE AT BIG THICKET NATIONAL PRESERVE
<p>At the western edge of the longleaf pine (Pinus palustris) range, federal land managers have burned the forests of Big Thicket National Preserve to bring back the structure and diversity of the longleaf pine forest. In the early 1990’s, a four year study was conducted by Rice University, and the …
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