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Dissertations / Theses on the topic 'Standing trees'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Persson, Alexandra. "Metoder för att undersöka effekterna av naturvårdshänsynen i skogsbruket, efter den senaste skogsvårdslagenMetoder för att undersöka effekterna av naturvårdshänsynen i skogsbruket, efter den senaste skogsvårdslagen." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-59287.

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<p>In 1994 a new Forestry Act was accepted in Sweden. One of the aims of the law is to raise consideration forpreservation of biodiversity. Since the new law got accepted and some time has passed, there now lie someinterest in examining whether the law has been effective towards its purpose. Methods suitable for analysishave been examined during this study. The content of this pilot study is based around five parameters whichcan be used to validate the effects of the new law. The field study were executed in Orsa, Dalarna, Sweden ina managed forest where last clearcut was performed after 1994.

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2

Schubert, Sandy. "Acousto-ultrasound assessment of inner wood-decay in standing trees : possibilities and limitations /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17126.

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3

Espinosa, Moreno Luis Fernando. "Ultrasound imaging for sustainable and rational management of standing trees in urban areas." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS009/document.

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Les arbres urbains jouent un rôle écologique, sanitaire et esthétique majeur dans les villes modernes. L’évaluation des risques associés aux arbres dans les villes est essentiellement visuelle, alors que l'ampleur des dégâts internes et le danger associé ne peuvent pas être évalués avec précision par la seule observation. La tomographie par ultrasons pour la détection de la décomposition du bois dans les arbres vivants a été évaluée dans plusieurs études ; les auteurs ont indiqué que cette technique est appropriée pour l’évaluation de la qualité des arbres sur pied. Cependant, cette technique

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4

Leach, Jason A. "Stream temperature dynamics following riparian wildfire : effects of stream-subsurface interactions and standing dead trees." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/1411.

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The primary objectives of this study were to address how stream temperature is influenced by (1) spatial variability in energy exchanges, (2) reach-scale stream-subsurface water interactions and (3) the net radiation dynamics associated with standing dead riparian vegetation. Stream temperature, riparian microclimate, and hydrology were characterized for a 1.5 km reach of Fishtrap Creek, located north of Kamloops, British Columbia. Within-reach air temperature and humidity variability was small, while wind speed, net radiation and surface-subsurface interactions exhibited considerable spatiall

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5

Yerbury, Michael D. "The spatial and temporal distribution of moisture within Sitka spruce standing trees and roundwood logs." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/7868/.

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Within the UK, levels of timber processing are set to increase as the plantation grown forest resource reaches financial maturity. Made up predominately of exotic coniferous species, this resource has been the focus of many recent studies as wood users look to improve their fundamental knowledge of the primary characteristics that will enable them to make more appropriate decisions and capitalise on future opportunities. As a further contribution to this knowledge base, it was the aim of this thesis to determine moisture content variation within Sitka spruce (Picea sitchensis (Bong.) Carr) sta

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6

Clark, Neil. "An Assessment of the Utility of a Non-Metric Digital Camera for Measuring Standing Trees." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/35575.

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<p> A method is set forth which makes use of a commercially available, non-metric, solid-state matrix camera to capture spatial and spectral data from an individual tree bole that can be used to measure characteristics about the stem. In this study diameters and heights were measured and used to estimate the volume of 20 red oak (Quercus spp.) stems ranging in diameter at breast height from 16 to over 60 cm and height from 12 to 20 meters. Images were taken from four orthogonal directions around the each stem. Diameter estimates from matching camera to stem distances (3 to 15 meters) of opposi

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7

Fournier, Jeffrey G. "Spread of Phellinus weirii inoculated on the roots of standing and recently cut juvenile Douglas-fir trees." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq24134.pdf.

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8

Wessels, Coenraad Brand. "The variation and prediction of structural timber properties of standing Pinus patula trees using non-destructive methods." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86246.

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Thesis (PhD(For))--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Pinus patula is the most intensively planted conifer in the tropics and sub‐tropics. In South Africa Pinus patula plantations are the main saw‐log resource for structural lumber production. Improved intensive silvicultural practices and tree breeding have resulted in marked increases in the rate of growth. To reap the financial benefits of the faster growth, plantation managers are more and more inclined to reduce rotation ages, which inevitably results in the production of higher proportions of juvenile wood at final

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9

Davitt, Marcia S. "Priming the Pump with Grass, Trees, and Waste: An exploration of biofuels policy and research discourse and its potential to alter living spaces." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/52974.

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Biofuels, a solar-sourced technology that can be processed from non-fossilized plant matter, have significant appeal as a means of securing a reliable, sustainable energy supply. They appear to offer significant potential by virtue of being harvestable from common plant life such as prairie grasses. I argue that a shared set of knowledge claims emerging from multiple energy/environmental institutions in Germany and the U.S. are linked by a shared set of assumptions. I characterize these claims as a "mainstream" discourse because together they function as a single powerful discourse that inf

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10

Munalula, Francis. "A method for the non-destructive determination of the knotty core sizes of standing Pinus patula trees, based on ring width assessments at breast height and the pruning history." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4126.

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Thesis (MScFor (Forest and Wood Science))--University of Stellenbosch, 2010.<br>ENGLISH ABSTRACT: The objective of this study was to develop and assess a methodology of using pruning information (age and height) and ring width measurements on increment core samples taken at breast height from standing pruned Pinus patula trees for modeling the knotty core sizes in the pruned section of a tree. A total of 170 trees from 17 compartments, representing a wide variety of growth sites from the Mpumalanga escarpment, were selected and destructively sampled. Sample trees were selected to represent the

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11

Polewski, Przemyslaw P. [Verfasser], Uwe [Akademischer Betreuer] Stilla, Peter [Gutachter] Krzystek, Helmut [Gutachter] Mayer, and Uwe [Gutachter] Stilla. "Reconstruction of standing and fallen single dead trees in forested areas from LiDAR data and aerial imagery / Przemyslaw P. Polewski ; Gutachter: Peter Krzystek, Helmut Mayer, Uwe Stilla ; Betreuer: Uwe Stilla." München : Universitätsbibliothek der TU München, 2017. http://d-nb.info/1151638625/34.

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12

Eneland, Anna. "Metoder för att undersöka effekterna av naturvårdshänsynen i skogsbruket efter den nya skogsvårdslagen." Thesis, Linköping University, Ecology, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-58998.

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<p>Detta arbete har undersökt skillnaderna mellan den nuvarande skogsvårdslagen och den föregående. Undersökningen har bestått av två delar, där ena delen är en litteraturstudie av lagarna och den andra är en fältstudie av metoder för att mäta naturhänsynsförändring. Som komplement till fältstudien har en litteraturstudie av undersökningsparametranas naturvårdsnytta. Litteraturstudien av lagarna gick till på följande sätt, inledningen av båda lagarna och hänsynsparagraferna har lästs och jämförts. Fältstudie har gjorts efter metoder som har arbetats fram och sedan testats i fält. De undersökni

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13

Nadler, Madison. "Cavity Presence in Snags Created Using Two Techniques in the Huron-Manistee National Forest." Wittenberg University Honors Theses / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1617900472301695.

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14

Bonazza, Marcelo. "Quantificação dendrométrica não-destrutiva e relações entre unidades de volume sólido e massa de madeira em povoamentos de Pinus taeda L." Universidade do Estado de Santa Catarina, 2015. http://tede.udesc.br/handle/handle/1948.

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Made available in DSpace on 2016-12-12T20:12:31Z (GMT). No. of bitstreams: 1 PGEF15MA039.pdf: 2330601 bytes, checksum: 436c70ad150933024e19e47188c03d1d (MD5) Previous issue date: 2015-02-19<br>Evaluation of erros from non-destructive volumetric estimates takes fundamental importance, as well the establishment of trusted relations between solid volume and mass units, whereas the wood quantification is directly linked to eficiente planning in forestry companies. This way, the aim of this study was to evaluate the accuracy of volumetric estimates by the non-destructive method comprinsing difere

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15

Badraghi, Naghimeh. "Productivity, Cost and Environmental Damage of Four Logging Methods in Forestry of Northern Iran." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-145790.

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Increasing productivity, reducing cost, reducing soil damage, reducing the impact of harvesting on standing tree and regeneration are all very important objectives in ground skidding system in the management of the Hyrcanian forest. The research carried out to obtain these objectives included four logging methods, tree length method (TLM), long length method (LLM), short length method (SLM), and wood extraction by mule (mule) in northern Iran. In order to determine the cost per unit, time study techniques were used for each harvesting method, time study data are shifted to logarithmic data bas

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16

Kao, Yu-Chien, and 高毓謙. "Defect Evaluation of Standing Trees by Ultrasonic Tomography Technique." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/00196100757511650323.

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碩士<br>國立臺灣大學<br>森林環境暨資源學研究所<br>94<br>The purpose of this study was to investigate decayed standing trees and artificial holes in the cross section of Cryptomeria japonica by using ultrasonic tomography technique. The ultrasonic instrument Sylvatest-Duo and the trunk section of Cryptomeria japonica were used in our study. In order to simulate different degrees of the core decay, chiseling on the central area of trunk section was done by hand and then the ultrasonic velocities of various measured directions were investigated. The relationships among different values of ultrasonic velocities, th

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17

Mahon, Jerry M. "The use of acoustics for the wood quality assessment of standing P. taeda trees." 2007. http://purl.galileo.usg.edu/uga%5Fetd/mahon%5Fjerry%5Fm%5F200712%5Fms.

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Thesis (M.S.)--University of Georgia, 2007.<br>Directed by Richard F. Daniels. Includes an article submitted to Southern journal of applied forestry. Includes bibliographical references (leaves 60-63).

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18

Luo, Li-Wei, and 羅立偉. "Evaluation of China-fir standing tree and wood qualities by the nondestructive techniques." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/34945016968968855256.

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碩士<br>國立中興大學<br>森林學系所<br>104<br>The purpose of this study is that using the stress-wave tomography technique, tapping resonance method, the growth cone sampling and other non-destructive testing to evaluate the soundness of standing China-fir in Hui Sun Forest. And to explore the accuracy of this method, as well as non-destructive testing for the relevant mechanical properties of materials, for reference of China-fir plantation thinning in the future. The results show that the transverse stress between healthy China-fir velocity 1500 m/s or more, and velocity less than 1300 m/s who is conside

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19

Hua, Tun-Li, and 華敦禮. "Influences of UV-B irradiation on active compound contents in standing-tree leaves of Cinnamomum osmophloeum." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/eytfzx.

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碩士<br>國立臺灣大學<br>森林環境暨資源學研究所<br>106<br>The depletion of ozone in the atmosphere has resulted in an increase in UV-B irradiation. A high UV-B dosage provokes damage to organism. Plants may attenuate the impact of UV-B irradiation through the accumulation of different types of phenolics produced. Most of these compounds are flavonoid, which can act as an effective UV-B screen. Moreover, some flavonoids may also eliminate free radicals which caused by UV-B radiation. This mechanism will make leaves to synthesis more active compounds, which can be used potentially. Cinnamomum osmophloeum is one of

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20

Sunjidmaa, Renchin. "Diversität und Ökologie holzbewohnender Pilze in Khonin Nuga, Westkhentey, Mongolei." Doctoral thesis, 2009. http://hdl.handle.net/11858/00-1735-0000-0006-AD74-6.

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21

Huang, Chung-Yau, and 黃崇曜. "Properties of Taiwan Red Cypress and Japanese Cedar Standing Tree Grown under Even-Aged Stand with Different DBH by Nondestructive Techniques." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/27370932385008659871.

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碩士<br>國立臺灣大學<br>森林環境暨資源學研究所<br>99<br>The purpose of this study was to investigate the physics properties of Taiwan red cypress and Japanese cedar in the same age with different DBH(diameter at breast height) by using several nondestructive testing methods. The methods included ultrasonic wave method, Pilodyn method, stress wave method, tap tone method, soft x-ray, compression stress and bending test. First of all, standing tree was evaluated by ultrasonic wave method and Pilodyn.. Then, they was felled and cut into small clear specimens, and evaluated physics properties by nondestructive test

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22

Badraghi, Naghimeh. "Productivity, Cost and Environmental Damage of Four Logging Methods in Forestry of Northern Iran." Doctoral thesis, 2013. https://tud.qucosa.de/id/qucosa%3A27089.

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Increasing productivity, reducing cost, reducing soil damage, reducing the impact of harvesting on standing tree and regeneration are all very important objectives in ground skidding system in the management of the Hyrcanian forest. The research carried out to obtain these objectives included four logging methods, tree length method (TLM), long length method (LLM), short length method (SLM), and wood extraction by mule (mule) in northern Iran. In order to determine the cost per unit, time study techniques were used for each harvesting method, time study data are shifted to logarithmic data bas

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23

Wing, Brian M. "Examination of airborne discrete-return lidar in prediction and identification of unique forest attributes." Thesis, 2012. http://hdl.handle.net/1957/30360.

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Airborne discrete-return lidar is an active remote sensing technology capable of obtaining accurate, fine-resolution three-dimensional measurements over large areas. Discrete-return lidar data produce three-dimensional object characterizations in the form of point clouds defined by precise x, y and z coordinates. The data also provide intensity values for each point that help quantify the reflectance and surface properties of intersected objects. These data features have proven to be useful for the characterization of many important forest attributes, such as standing tree biomass, height, den

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