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Rozprawy doktorskie na temat „Pinus radiata”

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Data publikacji: 4 czerwca 2021
Data aktualizacji: 25 lipca 2025

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1

Waghorn, Matthew J. "Effect of initial stand spacing and breed on dynamic modulus of elasticity of Pinus radiata." Thesis, University of Canterbury. Forestry, 2006. http://hdl.handle.net/10092/1129.

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Wood stiffness or modulus of elasticity (MOE) is one of the most important wood properties for solid timber applications, and as such, the efficacy of wood use, especially for structural timber is strongly related to MOE. MOE in Pinus radiata is highly variable and poorly understood. In this study, the effect of initial stand spacing and breed on outerwood MOE and the vertical distribution of MOE of Pinus radiata was assessed. Understanding positive or negative influences of growth caused by initial stand spacing and genetic material on MOE is appealing because it could enable us to better com
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2

Tang, Samuel Y. Y. "Modeling the mechanical properties of Pinus Radiata." Thesis, University of Canterbury. Mechanical Engineering, 1998. http://hdl.handle.net/10092/6420.

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The study of a methodology to model the mechanical properties of Pinus Radiata takes place from the nanoscopic cell fiber [3] to the board scale level. Gibson and Ashy had generalized wood cells into hexagonal cells, previous work [2] extends the model specifically for Pinus Radiata. Unfortunately, earlier work was done on published data from various sources, not necessary related to Pinus Radiata nor from a common reference piece of characterized Pinus Radiata, making correlation with experimental work [4] difficult. Further work was done by the author on a characterized sample of Pinus Radi
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3

Li, Guizhen. "Wood structure and properties of clonal plantlets and seedlings of Pinus radiata." Thesis, University of Canterbury. Plant and Microbial Sciences, 2000. http://hdl.handle.net/10092/5927.

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The ontogeny of vascular cambium and the wood formation in the 8 month-old Pinus radiata have been examined. The results showed that the procambium develops from the subapical meristem parenchyma, which is converted to pro cambial cells by periclinal division about 0.5 mm from the shoot tip. The interfascicular cambium originates from the interfascicular parenchyma, which is also derived from the subapical meristem. Transverse sections show that the interfascicular parenchyma convert to interfascicular cambial cells requires activation by the fascicular cambium. The vascular cambium was establ
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4

Lin, Xueqin. "Culture of isolated embryos of Pinus radiata D. Don." Thesis, University of Canterbury. Plant Biotechnology, 2000. http://hdl.handle.net/10092/7031.

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Effects of nutritional factors, plant growth regulators, and physical factors on the conversion of isolated embryos into plantlets of Pinus radiata were investigated. Results showed that nutritional factors were critical to the conversion of isolated embryos into plantlets of P. radiata. The optimum medium strength was half strength of the medium consisting of modified Quoirin and Le Poivre (LP) salts (von Arnold and Eriksson 1981) and Schenk and Hildebrandt (1972) (SH) vitamins. Sucrose (3%) as well as glucose (2-3%) and fructose (2-5%) could serve as carbon sources for the conversion of isol
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5

Cerqueira, Andreia Filipa Lages. "Effects of phosphite in Pinus radiata-Fusarium circinatum interaction." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17015.

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Mestrado em Biologia Molecular e Celular<br>O cancro resinoso, provocado pelo fungo Fusarium circinatum, é uma doença que afeta Pinus spp. e Pseudotsuga menziesii em todo o mundo e está sujeita a medidas de quarentena. Caracteriza-se pela formação de grandes cancros resinosos que rodeiam rebentos, ramos e troncos e levam à morte do hospedeiro. Até à data não existem meios para o controlo da doença e, com a crescente necessidade de reduzir o uso de fungicidas, outras abordagens devem ser estudadas. Um método para o controlo de doenças fitopatogénicas passa pela indução da resistência do
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6

Moreno, Chan Julian. "Moisture content in radiata pine wood : implications for wood quality and water-stress response : a thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy in Forestry, School of Forestry, College of Engineering, University of Canterbury /." Thesis, University of Canterbury. School of Forestry, 2007. http://hdl.handle.net/10092/1217.

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This thesis studied the influence of moisture content on the dynamic estimation of stiffness in wood of Pinus radiata D. Don. This is an important non-destructive measure for estimation of stiffness in standing trees, logs and lumber. Moisture content affects both acoustic velocity and density in the fundamental equation of dynamic MOE (DMOE = V²ρ, where V = acoustic velocity and ρ = density). Investigation included measurements with boards in the laboratory considering moisture contents below and above FSP as well as temperatures below and above 0°C. This also included field measurements of t
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7

Wells, Karen E. "Development of a Laboratory Protocol for the Micropropagation of Monterey Pines (Pinus Radiata), Año Nuevo Stand." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/76.

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Monterey pine (Pinus radiata), a native tree to California and two Mexican islands, is important both ecologically and economically. Outside native stands, Monterey pines are grown for landscaping in California and on plantations around the world. Pitch canker, a disease caused by the fungus Gibberella circinata Nirenberg & O’Donnell (Fusarium circinatum Nirenberg and O'Donnell) is threatening the survival of Monterey pines. The disease currently affects Monterey pines in many parts of the world including the native stands. No effective chemical or biological control is available but some Mont
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8

Nanayakkara, Bernadette. "Chemical Characterisation of Compression Wood in Plantation Grown Pinus Radiata." The University of Waikato, 2007. http://hdl.handle.net/10289/2343.

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The primary objective of this study was to find out if changes in chemistry could be used to quantify Pinus radiata compression wood severity or degree of compression wood development. Basic chemical composition and the lignin structure was assessed for a range of different compression wood samples sourced from juvenile wood, mature wood, earlywood, latewood, branches, knots, 2-year and 1-year old Pinus radiata. Fluorescence microscopy was used as the reference method to assess the degree of compression wood development. Lignin structure of compression wood was studied by thioacidolysis, size
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9

Kay, Stuart James. "The biological control of sapstain of Pinus radiata with microorganisms." Thesis, University of Auckland, 1995. http://hdl.handle.net/2292/2474.

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A total of six hundred and sixteen fungal and two hundred and thirty two bacterial isolates were obtained either from the sapwood of Pinus radiata or from other sources, including UV mutagenesis. All isolates were screened on Pinus radiata wood chips for their survival and colonisation attributes. Of these isolates, two hundred and eighty two failed to grow or caused permanent deep seated discolourations or decay and were eliminated from the study. The remaining five hundred and sixty six isolates were assessed for their antagonistic ability against sapstain. In a dual screen on Pinus radiata
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10

Bown, Horacio E. "Representing Nutrition of Pinus Radiata in Physiological Hybrid Productivity Models." Thesis, University of Canterbury. School of Forestry, 2007. http://hdl.handle.net/10092/1210.

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Hybrid physiological models are being increasingly used to assess productivity, carbon sequestration, water and nutrient use and environmental impacts of management decisions. Users include forest managers, politicians, environmental agencies and scientists. However a wider use of these models has been prevented as a result of an incomplete understanding of the mechanisms regulating carbon allocation, nutrient availability in soils and nutrient uptake by trees. On-going innovation in clonal forestry, genetic improvement and vegetation management techniques is also poorly represented in hybrid
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11

Midgley, John Claude. "A dendrochronological investigation of Pinus radiata from Silvermine Nature Reserve." Bachelor's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/26031.

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Whole trunk cross sections of Pinus radiata were collected from Silvermine Nature Reserve, Cape Town. The site was located on a hill in the nature reserve where precipitation was assumed to be a limiting factor in tree growth. Ring widths along 82 radii on 41 samples were measured to the closest 0.1 mm. Samples displaying the highest correlation between ring width values were selected to create a growth index chronology for the site. The resulting chronology was compared to various aspects of precipitation and temperature. Correlation coefficients between tree growth and annual, winter and gro
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12

Sharma, Rajesh kumar. "Comparison of development of radiata pine (Pinus radiata D. Don) clones in monoclonal and clonal mixture plots." Thesis, University of Canterbury. School of Forestry, 2008. http://hdl.handle.net/10092/1577.

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The development of radiata pine (Pinus radiata D. Don.) clones was compared in monoclonal and clonal mixture plots planted in an experiment established at Dalethorpe, Canterbury, New Zealand with ten radiata pine clones in September 1993. Clones were deployed in a randomised complete block plot design with three replications. Each replication contained ten treatments of monoclonal plots and one in which all the clones were intimately mixed in equal proportions. Clones significantly differed in initial morphologies, survival and stem slenderness. Sturdiness and initial heights were found to be
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13

Dieste, Andrés. "Colour development in Pinus radiata D. Don. under kiln-drying conditions." Thesis, University of Canterbury. Chemical and Process Engineering, 2002. http://hdl.handle.net/10092/1134.

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This study quantifies discolouration on the surface of Pinus radiata boards during kiln drying, particularly kiln brown stain (KBS), and models it as a function of chemical compounds present in the wood closest to the surface. The discolouration was investigated with two experimental factors: drying time, which consisted in drying at 70/120 ℃ for 0, 8, 16 and 24 hours; and leaching, done at three levels, noleaching, mild and severe, to reduce the soluble compounds present in wood suspected of developing coloured compounds. The colour change was quantified using a reflectance photometer (colour
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14

Denholm, Patricia Margaret. "Biodiversity, biosolids and bioindicators in Pinus radiata D. Don planted forests." Thesis, University of Canterbury. Forestry, 2003. http://hdl.handle.net/10092/6021.

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The global issue of biodiversity was addressed at a local level in this thesis, which examined the effects of a biosolids application programme on the diversity of soil and litter arthropods in Pinus radiata D. Don planted forests in mid Canterbury, New Zealand. A taxonomic inventory of selected sites not only added to the sparse records of entomological data for similar habitats across New Zealand, but also enabled the development of a predictive model for comparison and validation in forward research. Evidence was sought for biosolids-mediated effects in the field on (i) the functional diver
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15

Zhao, Weizhong. "Growth and yield modelling of Pinus radiata in Canterbury, New Zealand." Thesis, University of Canterbury. Forestry, 1999. http://hdl.handle.net/10092/7148.

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During this study two growth and yield models were developed for Pinus radiata D.Don plantations in Canterbury, New Zealand, namely CanSPBL and CanJuv. CanSPBL is a model for the whole rotation of stands owned by the Selwyn Plantation Board Limited in Canterbury. CantJuv is a model for juvenile growth from after planting to before thinning in Canterbury. An existing stand growth and yield model CANTY was examined using a newly established relational database of PSP measurements. Projection bias was shown for mean top height, basal area per hectare and volume per hectare. Height-diameter relat
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16

Rust, Stephanus Marthinus. "Classification of timber from Pinus radiata trees exposed to forest fires." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/98097.

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Thesis (MSc)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: This study aimed to classify wood from trees that were exposed to forest fires with regards to their end use. Exposure to high temperatures over time is known to degrade wood in various ways. This degradation could limit the end use by altering mechanical, chemical and physical properties, leading to difficulty in processing or failing to meet required specifications for various grades. In this study wood from Pinus radiata trees that were exposed to forest fires of different levels of heat intensity was analysed with regards t
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17

Fish, Kathryn B. "Biotic resistance to the invasion of Pinus radiata into mountain fynbos." Bachelor's thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/26718.

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18

Pinjuv, Guy L. "Hybrid forest modelling of Pinus Radiata D. Don in Canterbury, New Zealand." Thesis, University of Canterbury. New Zealand School of Forestry, 2006. http://hdl.handle.net/10092/1102.

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During this study two models were developed to predict growth of Pinus radiata D.Don plantations in Canterbury, New Zealand. The first, CanSPBL(1.2), is a model for whole rotations of stands owned by Selwyn Plantation Limited in Canterbury. The second model, CanSPBL(water) is a hybrid growth model for the Selwyn estate in Canterbury that incorporates an index of root zone water balance over the simulation period. An existing stand growth and yield model CanSPBL was examined using a validation dataset of PSP measurements that were not used in model fitting. Projection bias was shown for mean to
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19

Guy, Andrew Cleveland. "An Improved Germination Protocol for Pinus radiata, Applicable for Investigation into the Effects of Exogenously Supplied Amino Acids on Seedling Growth, Under Glasshouse and Lab Conditions." Thesis, University of Canterbury. Biological Sciences, 2013. http://hdl.handle.net/10092/8711.

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The two main goals in this research were: (i) to investigate Pinus radiata seed germination methods, identifying areas where improvements could be made and developing a germination protocol applicable for studies under sterile and glasshouse conditions, and (ii) to investigate the potential of L-amino acids as nitrogen fertilisers or growth regulating substances, specifically during early seedling growth of P. radiata. There is a lack of a standard protocol for seed germination of radiata pine. Therefore, a systematic approach was undertaken to develop a germination protocol which was applica
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20

McQuillan, Shane. "Above and Below Ground Assessment of Pinus radiate." Thesis, University of Canterbury. School of Forestry, 2013. http://hdl.handle.net/10092/9897.

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A comparison of above ground forest metrics with below ground soil CO₂ respiration was carried out in an attempt to reveal if any correlations exist. Above ground measurements of 2720 clonally propagated trees were taken assessing the silvicultural treatments of stocking, herbicide and fertiliser. These were compared to 480 below ground soil CO₂ respiration measurements. Using measurements of mean height, mean dbh and basal area the data was analysed and returned significant results for mean dbh and the interactions of herbicide and clones, and stocking and herbicide. Mean height returned a si
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21

Barrios, Rodríguez Andrés. "Determinación del diámetro del cilindro defectuoso en trozas podadasde pino radiata (Pinus radiata D.Don), mediante atenuación de radiación gamma." Tesis, Universidad de Chile, 2004. http://www.repositorio.uchile.cl/handle/2250/105025.

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22

Nair, Hema. "A study of intra-ring checking and xylogenesis in Pinus radiata D.Don." Thesis, University of Canterbury. Biological Sciences, 2006. http://hdl.handle.net/10092/1325.

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Pinus radiata is the dominant species of the plantations forests in New Zealand. The forest industry in New Zealand is heavily dependant on it. However, Pinus radiata can develop wood quality flaw called 'intra-ring checking'. The checks or splits appear in wood during kiln drying and usually affect the earlywood region of the wood. It lowers value of appearance grade timber leading to huge economic loses for the forest industry. This thesis presents a study that was undertaken as a part of ongoing collaborative work that is being carried out to understand wood quality issues in Pinus rad
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23

Clinton, Peter William. "Competition for nitrogen and moisture in a Pinus radiata-pasture agroforestry system." Thesis, University of Canterbury. Forestry, 1990. http://hdl.handle.net/10092/6755.

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A 3 x 2 factorial experiment was conducted to examine the outcome and some of the competitive mechanisms between P. radiata (D. Don) and pasture for N and soil moisture. The factors examined were the monthly addition of 30 kg N/ha versus no additional N, and the manipulation of the level of pasture competition by spraying and simulated-grazing to give three levels of pasture competition. The experiment coincided with a period of severe drought which greatly increased the competition for soil moisture. Removal of pasture competition by spraying released a large amount of N into the soil minera
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Li, Mingshan. "Studies on adventitious root formation in Pinus radiata : biochemical and molecular aspects." Thesis, University of Canterbury. Plant and Microbial Sciences, 2000. http://hdl.handle.net/10092/5842.

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A reliable in vitro rooting system was established for further studies on biochemical and molecular aspects during adventitious root formation in Pinus radiata hypocotyls. High root counts and rooting efficiency were observed in a medium comprising ½ strength of the Murashige & Skoog's basal medium (1962), 20 g/l sucrose, 9 mg/l IBA and solidified with 8 g/l agar. In this system, the first cell division, formation of root primordium initial (a cluster of meristematic cells), well-organized root primordium (a dome shaped structure) and root emergence were typically observed at around day 4, 7,
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Dale, Tracy Maree. "A study of T-DNA integration and transgene expression in Pinus radiata." Thesis, University of Canterbury. Biological Sciences, 2004. http://hdl.handle.net/10092/7223.

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Pinus radiata D Don. is the key resource for the New Zealand forest industry. Genetic engineering could potentially accelerate its genetic improvement by the introduction of novel traits or modification of existing traits, with both environmental and economical importance for the industry. In this study PCR and Southern hybridisation confirmed stable T-DNA integration in P.radiata plants produced by Agrobacterium-mediated gene transfer. Southern analysis showed a predominance of single T-DNA integration events. However, incomplete transfer leading to truncated copies of the T-DNA appeared to
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26

Gorman, Susan Wilkie. "Initial characterization of the 5S and ribosomal gene families in Pinus radiata." Case Western Reserve University School of Graduate Studies / OhioLINK, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=case1059655407.

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Welsh, Shayne. "Hormonal control of wood formation in radiata pine." Thesis, University of Canterbury. Biological Sciences, 2006. http://hdl.handle.net/10092/968.

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Pinus radiata is by far the dominant species grown in New Zealand plantations as a renewable source of wood. Several wood quality issues have been identified in the material produced, including the high incidence of compression wood, which is undesirable for end users. At present our understanding of the complex array of developmental processes involved in wood formation (which has a direct bearing on wood quality) is limited. Hence, the forest industry is interested in attaining a better understanding of the processes involved. Towards this goal, and for reasons of biological curiosity
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Wang, Eric Yunxin. "Properties and Distortion of Douglas-fir with Comparison to Radiata Pine." Thesis, University of Canterbury. Chemical and Process Engineering, 2009. http://hdl.handle.net/10092/3556.

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The objectives of this study were to investigate stability related basic wood properties and to determine stability performance of New Zealand grown Douglas-fir and those of radiata pine wood. In this study, nine 60-year old Douglas-fir trees and thirteen 26-year old radiata pine trees were selected from forests in Canterbury region. From these trees, 36 discs of 200 mm thick (13 for Douglas-fir and 23 for radiata pine) and 388 boards with dimensions of 100mm x 50mm x 4.8m (210 fro Douglas-fir and 178 fr radiata pine) were prepared. From the prepared discs, 515 specimens (204 for Douglas-fi a
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Thomas, Jimmy. "An investigation on the formation and occurrence of spiral grain and compression wood in radiata pine (Pinus radiata D. Don.)." Thesis, University of Canterbury. Biological Sciences, 2014. http://hdl.handle.net/10092/9654.

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Radiata pine (Pinus radiata) is the most important plantation tree in New Zealand forestry, and factors that reduce the quality of wood cause significant economic loss. Two of the most important of these issues are compression wood and spiral grain. Compression wood is a type of reaction wood, formed when a tree moves away from the vertical, and is characterised by biochemical and structural changes within the wood that reduce its quality and value. Spiral grain, however, is the alignment of the wood grain in a helix around the tree’s axis and away from the vertical. Again, this reduces the s
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Pongracic, Silvia School of Biological Sciences UNSW. "Influence of Irrigation and Fertilization on the Belowground Carbon Allocation in a Pine Plantation." Awarded by:University of New South Wales. School of Biological Sciences, 2001. http://handle.unsw.edu.au/1959.4/18164.

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The aboveground and belowground productivity of forest systems are interlinked through complex feedback loops involving tree, soil and environmental factors. With a predicted significant change in environmental conditions through the enhanced greenhouse effect, it is important to understand the response of forest systems to these new conditions. An increase in atmospheric CO2 is predicted to increase photosynthesis, and therefore whole plant productivity at the individual tree level. However this increase in photosynthesis may result in greater requirements for nutrients, particularly nitr
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Williams, Moira Caroline. "The ecological impacts of invasive Pinus radiata in eucalypt vegetation: pattern and process." School of Biological Sciences. University of Sydney, 2008. http://hdl.handle.net/2123/2761.

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Doctor of Philosophy (PhD)<br>Early recognition of plant invaders is key to their successful management. Yet knowledge of the ecological impacts of species before they become widespread is poor. This thesis examines the ecology of invasive Pinus radiata, a species which is known to spread from introduced plantings in Australia but is currently a low profile invader. Pinus invasions are considered major ecological problems in New Zealand and South Africa where wildlings are beginning to dominate natural areas and suppress native vegetation. Invasion success elsewhere and the large softwood esta
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Minchin, Rhys. "Effect of a Trichoderma bio-inoculant on ectomycorrhizal colonisation of Pinus radiata seedlings." Lincoln University, 2010. http://hdl.handle.net/10182/1751.

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Ectomycorrhizal colonisation potential of Pinus radiata seedlings inoculated with the commercially available Trichoderma species bio-inoculant, Arbor-Guard™, was investigated in a commercial containerised nursery setting and in a separate glasshouse experiment, which included the co-inoculation of specific ectomycorrhizal fungi. Application of Arbor-Guard™ to Pinus radiata seedlings in a containerised commercial nursery had no significant effect on the ability of the naturally occurring ectomycorrhizal (ECM) fungi to colonise the seedlings. Thelephora terrestris was the dominant ectomycorrhiza
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McDonald, Timothy Myles. "Making sense of genotype x environment interaction of Pinus radiata in New Zealand." Thesis, University of Canterbury. School of Forestry, 2009. http://hdl.handle.net/10092/3222.

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In New Zealand, a formal tree improvement and breeding programme for Pinus radiata (D.Don) commenced in 1952. A countrywide series of progeny trials was progressively established on over seventy sites, and is managed by the Radiata Pine Breeding Company (RPBC). Diameter at breast height data from the series were used to investigate genotype x environment interaction with a view to establishing the need for partitioning breeding and deployment efforts for P. radiata. Nearly 300,000 measurements made this study one of the largest for genotype x environment interaction ever done. Bivariate analy
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34

Hanstad, Janet Ann. "From Point Lobos to Jack's Peak : diversity in native populations of Pinus radiata /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2004. http://uclibs.org/PID/11984.

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Williams, Moira Caroline. "The ecological impacts of invasive Pinus radiata in eucalypt vegetation: pattern and process." Thesis, The University of Sydney, 2007. http://hdl.handle.net/2123/2761.

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Early recognition of plant invaders is key to their successful management. Yet knowledge of the ecological impacts of species before they become widespread is poor. This thesis examines the ecology of invasive Pinus radiata, a species which is known to spread from introduced plantings in Australia but is currently a low profile invader. Pinus invasions are considered major ecological problems in New Zealand and South Africa where wildlings are beginning to dominate natural areas and suppress native vegetation. Invasion success elsewhere and the large softwood estate in Australia suggest that p
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36

Kirongo, Balozi Bekuta. "Modelling growth responses of juvenile radiata pine (Pinus radiata D. Don) clones subjected to different weed competition levels in Canterbury, New Zealand." Thesis, University of Canterbury. Forestry, 2000. http://hdl.handle.net/10092/7496.

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For a given site, species, genotype and management regime, tree growth is related to the amount, and temporal- and spatial-distribution of foliage, as governed by the prevailing below- and above-ground environment and intercepted photosynthetically active radiation. Canopy foliage budgets, therefore can provide first hand information about how trees cope with adverse environmental conditions and resource deficits in more subtle ways than height and diameter which are not as sensitive to changes in resource availability as leaf area. Process-oriented research, aimed at quantifying needle mortal
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Walbert, Katrin. "Ectomycorrhizal communities associated with a Pinus radiata plantation in the North Island, New Zealand." Lincoln University, 2008. http://hdl.handle.net/10182/658.

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Aboveground and belowground ectomycorrhizal (ECM) communities associated with different age classes of the exotic plantation species Pinus radiata were investigated over the course of two years in the North Island of New Zealand. ECM species were identified with a combined approach of morphological and molecular (restriction fragment length polymorphism (RFLP) and DNA sequencing) analysis. ECM species richness and diversity of a nursery in Rotorua, and stands of different ages (1, 2, 8, 15 and 26 yrs of age at time of final assessment) in Kaingaroa Forest, were assessed above- and belowground;
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38

Duran, Sandoval Alvaro Jorge. "Determination and characterization of the causal agent of Pinus radiata needle blight in Chile." Thesis, University of Pretoria, 2010. http://hdl.handle.net/2263/31415.

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The leaf and shoot blight disease known locally as Daño Foliar del Pino (DFP) is the most important problem affecting Chilean Pinus radiata plantations. The disease is typified by needle infections, exudation of resin at the bases of needle brachyblasts and necrotic lesions in the cambium of younger trees, which eventually girdle branches. The disease causes death of seedlings young trees and mature trees can also succumb after a few years of successive infection. DFP emerged very recently and its cause was unknown. Studies that make up this thesis led to the identification of the causal
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Camacho, Focacci Felipe Ignacio. "Productividad primaria bruta y neta en plantaciones de Pinus radiata D. Don en la Región del Bío Bío, Chile." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/150827.

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Memoria para optar al Título Profesional de Ingeniero Forestal<br>Se realizaron inventarios forestales mensuales y mediciones fisiológicas trimestrales en plantaciones de Pinus radiata D. Don en la Región del Bío Bío en las cuatro principales zonas de crecimiento para esta especie (IV, V, VI y VII) durante 24 meses entre Agosto de 2010 y Agosto de 2012. Los predios donde se ubicaron los ensayos fueron Lomas Coloradas en la Comuna de San Pedro de la Paz, Nacimiento en la Comuna de Nacimiento, Santa Bárbara en la Comuna de Santa Bárbara y Tapihue en la Comuna de Cabrero. Para cada sitio se
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Rojas, Retamal Emilio Arturo. "Índice de área foliar en plantaciones de Pinus radiata D. Don en la la Región del Bío Bío, Chile." Tesis, Universidad de Chile, 2014. http://repositorio.uchile.cl/handle/2250/151645.

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Memoria para optar al Título Profesional de Ingeniero Forestal<br>Se midió mensualmente el índice de área foliar en plantaciones de Pinus radiata D. Don en la región del Bío Bío en las cuatro principales zonas de crecimiento para esta especie (IV, V, VI y VII) durante 24 meses entre Octubre de 2010 y Octubre de 2012. Los predios donde se ubicaron los ensayos fueron San Pedro de la Paz (predio Lomas Coloradas), Nacimiento (predio Nacimiento), Santa Bárbara (predio Santa Bárbara) y Cabrero (predio Tapihue). Para cada sitio se consideraron tres clases de edad ([0-7), [7-14) y [14+)). En cada uno
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Ferguson, George. "Calculating the potential increase in Pinus radiate stem value through selection for higher stiffness." Thesis, University of Canterbury. School of Forestry, 2014. http://hdl.handle.net/10092/10464.

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New Zealand grown Pinus radiata is limited in its application for structural purposes by its stiffness deficiencies. This dissertation aims to estimate potential improvements in stem value through selection for improved stiffness. A new method to model and value volumes of structural wood grades within a stem was used to calculate these value improvements. Data for each stem from a stand in Kaingaroa Forest bred for improved wood quality was used to perform this analysis. This data was from a stand bred for improved wood quality and included information on the stiffness, density and width of e
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Ramírez, Farfán Álvaro Felipe. "Comportamiento al biodeterioro de madera de pino radiata (Pinus radiata D.Don) tratado con cobre-azol (CA-B), contra hongos de pudrición y termita subterránea." Tesis, Universidad de Chile, 2017. http://repositorio.uchile.cl/handle/2250/151377.

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Memoria para optar al Título Profesional de Ingeniero Forestal<br>La madera de pino radiata, principal recurso maderero del país, es de baja durabilidad. Hongos e insectos, entre otros factores de su deterioro, son usualmente los más relevantes. Del grupo de los insectos, en particular la termita subterránea “Reticulitermes flavipes”, representa hoy la mayor preocupación, por su agresividad y avance permanente en áreas pobladas del país. El arseniato de cobre cromado (CCA) fue, por décadas, el preservante más utilizado en todo el mundo para proteger la madera, sin embargo, preocupaciones med
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Basilio, Paula Rachel Rabelo Correa. "Caracterizaçao de isolados de Sphaeropsis sapinea e avaliaçao da resistencia em progenies de Pinus radiata." reponame:Repositório Institucional da UFPR, 2013. http://hdl.handle.net/1884/15879.

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Sphaeropsis sapinea é conhecido como um importante patógeno de várias espécies de Pinus, causando a seca de ponteiros e a morte de árvores em plantios comerciais. Esse patógeno foi introduzido no Brasil, provavelmente, durante as introduções do gênero Pinus. Seu primeiro relato ocorreu na década de 1940, com os primeiros plantios de P. radiata no estado de São Paulo, os quais foram dizimados. Um projeto de reintrodução dessa espécie florestal no Brasil foi delineado para a seleção de famílias de P. radiata resistentes a S. sapinea. Desse modo, este estudo objetivou a caracterização morfológica
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Slui, Benjamin Thomas. "The effect of plot co-registration error on the strength of regression between LiDAR canopy metrics and total standing volume in a Pinus radiata forest." Thesis, University of Canterbury. School of Forestry, 2014. http://hdl.handle.net/10092/10460.

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Background: The objective of this study was to verify the effect that plot locational errors, termed plot co-registration errors, have on the strength of regression between LiDAR canopy metrics and the measured total standing volume (TSV) of plots in a Pinus radiata forest. Methods: A 737 hectare plantation of mature Pinus radiata located in Northern Hawkes Bay was selected for the study. This forest had been measured in a pre-harvest inventory and had aerial LiDAR assessment. The location of plots was verified using a survey-grade GPS. Least square linear regression models were developed to p
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Zoric, Branislav. "Modelling the influence of stocking on longitudinal and radial variation in wood properties of Pinus radiata on a warm Northland site." Thesis, University of Canterbury. School of Forestry, 2009. http://hdl.handle.net/10092/2564.

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The objective of this study was to determine how final stocking influences tree growth and radial and longitudinal variation in wood properties at a Pinus radiata D. Don plantation located at one of the warmest forest sites in New Zealand, Forsyth Downs forest in Northland. This thesis addressed both the effect of stocking on stand basal area, height, diameter and branch diameter and the effect of stocking on wood properties microfibril angle (MFA), module of elasticity and density. Finally, how ring width influences wood properties and whether this variable accounts for the treatment effects
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Van, Zyl Salmon Johannes. "Biomass potential and nutrient export of mature pinus radiata in the southern Cape region of South Africa." Thesis, Nelson Mandela Metropolitan University, 2015. http://hdl.handle.net/10948/4321.

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South Africa lags behind the rest of the world with regard to the availability of allometric biomass information. There is a complete lack of site specific allometric data for Pinus radiata in the southern Cape region, impeding investment in the renewable energy sector. This shortcoming was addressed by developing up-scalable, single tree biomass models. These models quantify the aboveground biomass of rotation age P. radiata grown in the southern Cape across a range of site conditions. The models use diameter at breast height (DBH) to predict the aboveground component biomass. A nutrient loss
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Pagliarini, Maximiliano Kawahata. "Genotype by environment interaction in slash pine and methodologies comparison for radiata pine wood properties /." Ilha Solteira, 2016. http://hdl.handle.net/11449/141895.

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Orientador: Ananda Virginia de Aguiar<br>Abstract: Exotic forest species have been introduced in Brazil in order to promote improvements in socioeconomic development and help to reduce the pressure caused to native forests. With growing demand for these species, research on genetic improvement has increased to find new, more productive germplasm and preferably in less time. Two species were used in the study: slash pine (Pinus elliottii Engelm. var. elliottii) and radiata pine (Pinus radiata D. Don). The first part of the study had the purpose to identify the stability, adaptability, productiv
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Ow, Lai Fern. "Thermal acclimation of photosynthesis and respiration in Pinus radiata and Populus deltoides to changing environmental conditions." Thesis, University of Canterbury. Biological Sciences, 2008. http://hdl.handle.net/10092/2000.

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Although it has long been recognized that physiological acclimation of photosynthesis and respiration can occur in plants exposed to changing environmental conditions (e.g. light, temperature or stress), the extent of acclimation in different tissues (i.e. pre-existing and new foliage) however, has not received much attention until recently. Furthermore, few studies have investigated the extent of photosynthetic and respiratory acclimation under natural conditions, where air temperatures vary diurnally and seasonally. In this study, the effects of variations in temperature on respiratory CO2 l
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Lee, Justin Chee Vui. "Development of a predictive model for the hypochlorite bleaching of CE-prebleached Pinus radiata Kraft pulp." Thesis, University of Canterbury. Chemical and Process Engineering, 1990. http://hdl.handle.net/10092/8782.

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A study was done to determine the kinetics and stoichiometry of hypochlorite bleaching of pinus radiata kraft pulp obtained from the extraction stage of a chlorine, caustic extraction and hypochlorite (CEH) bleaching sequence. The "differential method" of experimentation was used, where bleaching chemicals are charged at the start of the experiment and allowed to decrease as bleaching proceeds. The bleaching rate is found to be dependent on temperature, chromophore concentration (approximated by the specific light absorption coefficient), hypochlorite ion concentration (OCl-) and hydroxide ion
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Lambert, M. J. "Stem breakage of Pinus radiata during mechanical felling in Kinleith Forest, Central North Island, New Zealand." Thesis, University of Canterbury. Forestry, 1996. http://hdl.handle.net/10092/10380.

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This report examines stem breakage of Pinus radiata as a result of mechanical felling in Kinleith forest. Four machines were studied, two Bell TF120 feller-bunchers and two Timbco T445 hydro-bunchers. The machines broke between 84% and 100% of the trees felled. Most causes of breakage could not be determined. Of that which could, falling trees striking stumps and previously felled logs accounted for the majority of the breakage. The machine operators and the machine types studied were deemed to be significantly different and thus separate breakage functions were derived for each operator an
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