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Doctoral Degrees (Forest and Wood Science)
Recent Submissions
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Properties of wood-plastic composites made from alien invasive tree waste and recycled low-density polyethylene for interior use in social housing
(Stellenbosch : Stellenbosch University, 2022-11)ENGLISH ABSTRACTS: Low-cost wood plastic composites (WPCs) were developed from the entire biomass of invasive trees and recycled low-density polyethylene. The aim was to produce affordable building materials for low-cost ... -
Measuring and modelling dynamic moisture loss of pulpwood during rail transport in South Africa
(Stellenbosch : Stellenbosch University, 2022-11)ENGLISH ABSTRACT: The unit of planning in the South African forest industry is volume (m3). The unit of trade and financial reporting for pulpwood, however, is weight (tonnes). As living trees invariably contain more water ... -
Growth Response of Brachystegia longifolia to Copper Mining Pollution-Induced Heavy Metal Toxicity
(Stellenbosch : Stellenbosch University, 2022-10)ENGLISH ABSTRACT: Mining-induced heavy metal dispersion often contaminates the soil in forests surrounding copper mines. Heavy metals are highly toxic to plant health at elevated levels depending on many factors, including ... -
Investigating the photosynthetic and hydraulic trade-off during drought recovery in eucalypts
(Stellenbosch : Stellenbosch University, 2022-04)ENGLISH ABSTRACT: Stomatal regulation plays a vital role in maintaining the water status of a plant by minimising water loss, however, decreases in stomatal conductance can lead to reductions in carbon uptake. The stomata ... -
Supply chain management to integrate strategic, tactical and operational planning of wood procurement in the Eastern Cape
(Stellenbosch : Stellenbosch University, 2015-12)ENGLISH ABSTRACT: study quantifies and models potential monetary gains and improved resource utilisation of a typical forest to mill softwood sawlog supply chain in South Africa through incremental improvements of the ... -
Development of geopolymer bonded wood composites
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: In the wake of finding alternative sustainable and environmentally friendly products to conventional construction materials, geopolymers offer large potential as a low carbon footprint material. Their ... -
The Interaction between site, harvest residue management and plant stock quality on eucalyptus transplant survival, growth and uniformity in Kwazulu-Natal, South Africa
(Stellenbosch : Stellenbosch University, 2021-03)ENGLISH ABSTRACT: Most eucalypt plantations are managed forshort rotations (6 to 8 years) and established across regions with varying water and nutritional stresses. The design and implementation of silvicultural management ... -
Modelling the effect of stand density management and environmental variables on Pinus patula wood properties
(Stellenbosch : Stellenbosch University, 2020-03)ENGLISH ABSTRACT: Approximately one million hectares of Pinus patula has been planted worldwide, mainly in southern and eastern Africa and accounts for roughly half of the total softwood plantation area in South Africa. ... -
An investigation into the environmental sustainability of buildings in South Africa with a focus on timber building systems
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: Buildings are responsible for about 33% of global anthropogenic carbon dioxide emissions, high-energy consumption and other environmental resource uses. Numerous studies over the past 20 years showed that ... -
Properties and potential use of Irvingia gabonensis and Irvingia wombolu kernel extract as an eco-friendly wood adhesive
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT: The wood composite industry relies mostly on formaldehyde-based adhesives derived from non-renewable petrochemical sources. However, due to formaldehyde emission from the composite products bonded with ... -
The growth response of selected Zambian hardwood species to changing climatic conditions
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: Factors such as precipitation and temperature are key to the growth of trees. The expected change in growing conditions, i.e. rise in temperature and reduction in precipitation will influence tree ... -
Pattern and dynamics of remnant dry afromontane forests : a case study in Northwestern Ethiopia
(Stellenbosch : Stellenbosch University, 2019-03)ENGLISH ABSTRACT: Often forest managers get confronted with the management of a new forest area for which no information is available. The concept of this dissertation is to use a combination of common analytical tools ... -
Fertilisation of semi-mature Pinus elliottii and Pinus elliottii x caribaea stands on a climatic gradient in the Tsitsikamma and its effect on system nutrition and stand productivity
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT: Eight field trials were established in October 2015 to test the effect of different nitrogen and phosphorous combinations on Pinus elliottii and P. elliottii x caribaea growth. Fertiliser is costly, and ... -
Investigating pollination success between Pinus radiata and selected pine species
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT: Pinus radiata is not only an important commercial plantation species in the Southern Hemisphere, but it is highly susceptible to Fusarium circinatum. Interspecific hybridisation attempts between P. radiata ... -
Phosphate bonded wood and fibre composites
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT: In a world constantly driven by change, developing new composite products requires moving beyond the traditional approach to more environmentally benign processes and products. This study investigates the ... -
The use of atomic force microscopy to determine intermolecular adhesive forces in wood based composite materials
(2017-03)ENGLISH ABSTRACT: South Africa has considerable invasive wood species that are causing damage worth millions of dollars to the national economy every year. These species cover over 8 % of surface area and needs to be cleared ... -
Selected key ecosystem services, functions, and the relationship with biodiversity in natural forest ecosystems
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT: Ecosystem services (ES) are the benefits people obtain from ecosystems. Biodiversity is a relevant component in this context, as it supports most ecosystem functions. The worldwide decline in natural ... -
Estimation of tree biomass, measurement uncertainties, and morphological topology of Androstachys Johnsonii prain
(Stellenbosch : Stellenbosch University, 2016-03)ENGLISH ABSTRACT: This research was aimed at estimating biomass stocks separated in above- and belowground tree components, and studying the topology of the shoot and root systems of Androstachys johnsonnii Prain in woodlands ... -
The effect of fire damage on the growth and survival mechanisms of selected native and commercial trees in South Africa
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: Surface fires are known to affect trees of different species differently, depending on the capacity of the bark to shield the cambium from heat. Tree bark characteristics differ among species and thus ... -
The variation and prediction of structural timber properties of standing Pinus patula trees using non-destructive methods
(Stellenbosch : Stellenbosch University, 2014-04)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 ...
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