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 20 for “"stand development"”.
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Systems engineering approach to engine test stand development for micropatching evaluations
… methodology to develop an engine test stand used to extract, patch and validate the binary file of a diesel engine electronic control module. Electronic control modules operate modern systems ranging from aircraft and spacecraft to automobiles, heavy trucks and industrial equipment. …
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Simulation of Early Stand Development in Intensively Managed Loblolly Pine Plantations
… and incorporated into the PTAEDA2 loblolly pine stand simulator to provide growth projections from time of planting. Annual height growth is predicted using a two-parameter Weibull function, where distribution parameters are estimated from equations that utilize site index and age as predictor …
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High power X-band RF test stand development and high power testing of the CLIC crab cavity
This thesis describes the development and operation of multiple high power X-band RF test facilities for high gradient acceleration and deflecting structures at CERN, as re-quired for the e+ e- collider research programme CLIC (Compact Linear Collider). Signif-icant improvements to the control …
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Hybrid Illinois Device for Research and Applications material analysis test-stand development for characterization of fusion plasma-material interactions
… PFC research, the HIDRA-Material Analysis Test-stand (HIDRA-MAT) was designed and fabricated. HIDRA-MAT is an extension of HIDRA with the purpose of exposing materials to HIDRA stellarator plasmas and then performing in-vacuo surface characterization. HIDRA’s long-pulse plasmas emulate some …
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Long-term patterns of mortality and regeneration in near-natural woodland
… dead wood and canopy gaps.<br></br>2. The stands inherited various original-natural features and grew away from a managed state. Nonetheless, their structure and composition remained heavily influenced by past treatment and non-native species.<br></br>3. The natural development of five …
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Clearcut Solutions? An Evaluation of Partial Harvesting in the Black Spruce Boreal Forest
… little research has examined post-harvest stand development, a critical determinant both of habitat and timber supplies.I used a chronosequence approach in combination with dendroecological techniques, a neighbourhood modelling framework, and maximum likelihood statistical methods to …
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Modeling canopy structure effects on loblolly pine growth
… of chronological changes in canopy structure on stand development were explored as possible components of a future process-based model intended for management purposes. A model based on the Johnson’s SB distribution was developed to predict leaf area distribution of loblolly pine trees. This is a …
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Modeling maximum size-density relationships of loblolly pine (Pinus taeda L.) plantations
… density -- D relationships that applies to all stands of a certain species within a particular geographical area. MSDR dynamic thinning lines have been defined as the maximum tree density obtainable within an individual stand for a particular D which have been shown to vary relative to planting …
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The effects of intermediate-scale wind disturbance on forest composition, structure, and succession with implications for management
… legacies on forest composition, structure, and stand development. Intermediate-scale disturbances may promote stand heterogeneity, including uneven-aged structure, and their effects can range in size and distribution from small, patchy gaps to the removal of large portions of overstory …
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Sensitivity of two forest growth models to simulated pollution stress modifications
… developed to examine individual tree growth and stand development in loblolly pine plantations. Differential levels of pollution stress were incorporated into TASS through the reduction of the input variables photosynthetic efficiency and average needle retention. Reductions of photosynthetic …
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Soil Carbon, Nutrients, and Phosphorus Fractions: Responses to Weed Control and Harvest Residual Retention in two 10-Year-Old Douglas-fir (Pseudotsuga menziesii) Stands of the Pacific Northwest
… might have on nutrient pools through ensuing stand development.
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Effects of an intermediate-scale wind event on forest composition, structure, and structural complexity
… conditions, influence species composition and stand structure, and affect successional and developmental pathways. Natural disturbances differ in magnitude, severity, and return interval and range from frequent, gap-scale disturbances, to infrequent stand-replacing events. Disturbances at the …
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Long-term effects of prescribed fire on vegetation structure, dynamics, and tree growth in red pine (Pinus resinosa Ait.) forests in north central Minnesota.
… (>10 years) effects on forest structure and development have not been quantified. We describe the persistence of prescribed fire effects in a mature red pine (Pinus resinosa Ait.)-dominated forest in northern Minnesota, USA over a ~50 year period, as well as the relative roles of fire season …
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Red spruce physiology and growth in response to elevated CO₂, water stress and nutrient limitations
… stress or experiencing natural changes in stand development is unclear. This research examined the growth and physiological responses of red spruce seedlings to changes in atmospheric CO₂ water and nutrient availability to determine the response of this species to potential climatic …
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Efficient Sampling Methods for Forest Inventories and Growth Projections
… determine the timber stocking and the value of standing trees in a stand. With time and costs constraints, appropriate sampling designs and models are required to perform the inventory efficiently, as well as to obtain reliable estimates for the variables needed to make projections. In this …
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MODELLING THE GROWTH OF THE LOGGED OVER INLAND PRODUCTION FORESTS OF PENINSULAR MALAYSIA WITH FOREST MANAGEMENT CONSIDERATION
… are inventory, growth prediction and an understanding of the forest silviculture or ecology. Tropical rain forest contains the largest percentage of the world is terrestrial biodiversity and its ecosystem is one of the most complex, but studies on the growth of this forest is very much less …
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The Development Of Old-Growth Structural Characteristics In Second-Growth Forests Of The Cumberland Plateau, Kentucky, U.s.a.
… old-growth structure and function. To assess the development of old-growth forest characteristics in second-growth forests, 70 - 90 year old (young) and 140 - 160 year old (old) hardwood forests in the Daniel Boone National Forest were examined for a suite of structural characteristics to discern …
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Post-fire carbon, fuels, and vegetation dynamics in wet temperate forests: implications for future fire and management in the Pacific Northwest
… ecosystem management. However, fundamental understanding of fire effects is missing in ecosystems where fire is infrequent, including wet temperate forests west of the Cascade Range crest in Washington and northern Oregon, USA (“northwestern Cascadia”). In this dissertation, I combined empirical …
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Long-Term Disturbance Histories Of Managed And Natural Mixed-Hardwood Forests Of Central Indiana
… Center mixed-hardwood deciduous forest stands in east-central Indiana, U.S.A. I examined transitions of species composition and structure in a natural, relict forest as a contrast to stands that were subjected to partial, selective harvesting in the context of reduced disturbance …
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Patterns and processes in tropical forests: an analysis of forest structure and function from long-term permanent plots in Venezuela, Northern South America
… this study highlight the importance of including stand development and competition factors to improve our understanding of forest dynamics over time. This study can be used as an input for other more complex models aiming the analysis of effects of climate change on forest ecosystems in the …