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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Biochar as a carbon dioxide removal solution : An assessment of carbon stability and carbon dioxide removal potential in Sweden / Biokol som metod för infångning och lagring av koldioxid : Beräkning av biokolets stabilitet och potential för kolinlagring i Sverige.

Corbo, Alessandro January 2020 (has links)
Biochar is increasingly gaining momentum in the context of climate change mitigation and its production in Sweden could potentially become a large-scale system. Carbon stability in biochar is a crucial factor to assess its the carbon sequestration potential. Currently specific methodologies to assess biochar carbon site-specific stability are missing. This work aims at filling in part this knowledge gap assessing stability for Sweden specific soil conditions. Moreover, this work aims at assessing biomass feedstock availability for biochar production from a system perspective and aims at estimating biochar production and carbon dioxide removal potentials in Sweden. Preliminary carbon stability specific thresholds are provided for soils at 10°C temperature and, thus, representative for Sweden conditions. Carbon dioxide removal functions are obtained for different feedstock categories (woody, herbaceous, biosolids and animal waste) dependent on pyrolysis conditions (Highest Treatment Temperature), and conditions for maximum carbon removal are assessed. The need for future analysis in order to validate the presented results is highlighted. Future work should focus on collecting new experimental results of biochar mineralisation based on the requirements presented in this work. An opportunity mapping for biochar production system is provided, focusing on some aspects of the interaction of the former with existing systems (agricultural, energy production and waste management). From the results of the opportunity mapping, an inventory of the available feedstock for biochar production is presented including woody residues, sewage sludge, manure, garden waste and straw. From the available feedstocks, biochar production and carbon dioxide removal potentials are estimated to range respectively between 0.9 and 1.7 million tbiochar/year and between 2 and 4.2 million tons CO2 sequestered per year (in a 100 years perspective). In terms of carbon dioxide removal potential, biochar production can significantly contribute to the goals set by Sweden in terms of climate change mitigation and emission offsetting for 2030 and 2045, potentially covering all the measures needed from carbon sinks from forest and land. It was found that the most significant contribution derives from the availability of woody residues in Sweden, whose analysis should be prioritised for future assessment of feasibility of biochar large scale production.
12

Towards effective planning and management of urbanisation to mitigate climate change : a case of the city of Polokwane, South Africa

Mokoele, Ngoako Johannes January 2021 (has links)
Thesis (Ph.D. Administration (Development Planning and Management)) -- University of Limpopo, 2021 / The study aims to evaluate the effectiveness in planning for and management of urbanisation towards climate change mitigation at the City of Polokwane, Polokwane Local Municipality in the Limpopo Province. In Africa, various studies have demonstrated that unplanned urbanisation has resulted in increasing Greenhouse Gas emissions, which has contributed to the intensification of climate change. Although every country has contributed to climate change, African countries have blamed the current climatic conditions (floods, drought, changing precipitation patterns, sea-level rise, heatwaves and high temperature) on the excessive development alternatives that are highly polluting from the developed countries. In South Africa, the Spatial Planning Land Use Management Act (SPLUMA) is an important planning instrument to plan and manage urbanisation. Although there has been a transformation of legislative framework in South Africa, its implementation remains unreformed. The study adopted a mixed method approach to integrate the strengths of both the qualitative and quantitative methods. The study was undertaken at four areas around the City of Polokwane, namely Legae le Batho, Serala View, Emdo Park and Flora Park by engaging with the local communities on their perceptions regarding the planning and management practices within the municipality. The findings of the study indicate that there is a gap between the municipality and the local communities in the planning and management of urbanisation. The collaboration between the communities and Polokwane Local Municipality in planning serves as a strategy for efficient climate change mitigation. The use of solar systems for street lights, solar geysers, hybrid system (solar and batteries) and gas application can significantly reduce electricity consumption, which is currently generated from the combustion of fossil fuels. Therefore, the study recommends implementation of bio-digesters and solar plants to mitigate climate change. The study recommends proper alignment between the Polokwane Local Municipality and Capricorn District Municipality in terms of climate change mitigation to ensure effective implementation of project initiatives such as bio digesters (for gas generation) and solar plants for electricity generation.
13

The use of tax-based fiscal measures in the legal response to climate change / Louis Stefanus van der Walt

Van der Walt, Louis Stefanus January 2010 (has links)
Climate change is currently one of the most pressing environmental concerns globally and in South Africa. South Africa is especially vulnerable to the effects of climate change because of the country’s socio-economic context, water scarcity, unique geography and climate sensitive biodiversity. South Africa’s road transport and energy sectors are among others major contributors to climate change. The traditional command and control measures designed to mitigate climate change in South Africa’s road transport and energy sectors do not suffice on their own, there is a need for tax-based fiscal measures to assist in mitigating climate change in these sectors. Tax-based fiscal measures offer certain unique climate change mitigation capabilities, therefore numerous tax-based fiscal measures are already in place in South Africa’s road transport and energy sectors. The development of new taxbased fiscal measures should be encouraged and existing tax-based fiscal measures can and should be refined and extended to enhance their climate change mitigation efficacy. / LLM (Environmental Law and Governance), North-West University, Potchefstroom Campus, 2011
14

The use of tax-based fiscal measures in the legal response to climate change / Louis Stefanus van der Walt

Van der Walt, Louis Stefanus January 2010 (has links)
Climate change is currently one of the most pressing environmental concerns globally and in South Africa. South Africa is especially vulnerable to the effects of climate change because of the country’s socio-economic context, water scarcity, unique geography and climate sensitive biodiversity. South Africa’s road transport and energy sectors are among others major contributors to climate change. The traditional command and control measures designed to mitigate climate change in South Africa’s road transport and energy sectors do not suffice on their own, there is a need for tax-based fiscal measures to assist in mitigating climate change in these sectors. Tax-based fiscal measures offer certain unique climate change mitigation capabilities, therefore numerous tax-based fiscal measures are already in place in South Africa’s road transport and energy sectors. The development of new taxbased fiscal measures should be encouraged and existing tax-based fiscal measures can and should be refined and extended to enhance their climate change mitigation efficacy. / LLM (Environmental Law and Governance), North-West University, Potchefstroom Campus, 2011
15

Svenska researrangörer och klimatkompensering : En oönskad lösning på turismresors klimatpåverkan

Hagström, Jakob January 2016 (has links)
This paper examines the Swedish travel agencies that offer voluntary carbon offsetting to their costumers. Tourism is expanding in a fast rate globally with international arrivals predicted to reach 1,8 billion by 2030 (UNWTO, 2008). Economic development and more availability of individual free time are two of the most significant drivers to this growth in tourism. Globalization has also resulted in the growth and increase of mobility on a global scale (Harvey, 2000). The reduction of cost and time of mobility in space, driven partly by technological innovation in the transport sector has resulted in the increase of mobility (Harvey, 2000). Tourism is inseparable with transport; an increase in tourism therefore results in an increase of emissions related to tourism transports (Duval, 2007). One of the most alarming challenges facing tourism is the increase of green house gases. A number of Swedish travel agencies are offering voluntary carbon offsetting to their costumers as a way of tackling the problem off the increase of emissions related to tourism. This study however shows that the interest and motivation to buy voluntary offsetting from travel agencies are low, and gives some incentive to why that’s the case. Swedish travel agencies effort to sell voluntary carbon offsetting to their costumers must be seen as a failure, both in numbers and in doing any significant impact on the mitigation of climate change related to tourism.
16

The evolutionary economic geography of climate change

Hogarth, James Ryan January 2015 (has links)
The evolutionary economic geography of climate change is concerned with the processes by which the landscapes of greenhouse gas emissions and vulnerability to climate change are transformed from within over time. Unlike neoclassical economics, evolutionary economic geography is interested in how economic change is driven by innovation and shaped by structural, historical, and contextual factors at different scales. This thesis articulates an evolutionary economic geography perspective on three debates: (1) What factors influence human systems’ capacity to adapt to climate change, and how can these factors be assessed? (2) What forces drive and inhibit economic change towards low-carbon economies, and how should governments induce and manage such shifts? (3) What role should climate finance play in promoting developing countries’ shifts to low-emitting and climate-resilient economies, and how should it be managed? The thesis includes five academic papers. The first reviews the literature on vulnerability and adaptation. It argues that the adaptive capacity of human systems is constrained by structural and historical factors, and that the rich data necessary to identify these factors can only be obtained through qualitative research methods. The next two papers offer case studies from the Global Islands’ Vulnerability Research Adaptation and Policy Development project, which assess the adaptive capacity of Soufriere, Saint Lucia and Whitehouse, Jamaica, respectively. The fourth paper examines the mechanics of three low-carbon shifts in Brazil: the diffusion of no-till agriculture, the decrease in the deforestation rate in the Amazon, and the growth of the ethanol biofuel industry. It found that the driving forces behind each of the shifts were far more varied and complex than the price-based market dynamics analysed in neoclassical economics. The final paper argues that climate finance will need to perform a variety of functions beyond attracting low-carbon private investment. It concludes that the institutional architecture governing climate finance should enable direct access to national governments to incentivise them to implement sustainable innovation policy regimes.
17

Letter from the inside: a conventional farmer’s daughter on the need for a new agriculture

Unknown Date (has links)
In “Letters from the Inside,” Stephanie Anderson presents a vision for sustainable, regenerative agriculture from the perspective of someone born and raised on a conventional cattle ranch. From Florida to New Mexico to the Dakotas, she traces the stories of farmers and ranchers who are already creating such an agriculture. She argues that producers, in tandem with consumers and government, hold the power to change what is currently an environmentally and socially destructive food system. / Includes bibliography. / Thesis (M.F.A.)--Florida Atlantic University, 2015. / FAU Electronic Theses and Dissertations Collection
18

Integrated modeling approach for enery alternatives and green house gas mitigation in the state of Florida

Unknown Date (has links)
The objective of the research is to develop various green-house gas (GHG) mitigations scenarios in the energy demand and supply sectors for state of Florida through energy and environment modeling tool called LEAP (Long Range Energy Alternative Planning System Model) for 2010-2050. The GHG mitigation scenarios consist of various demand and supply side scenarios. One of the GHG mitigation scenarios is crafted by taking into account the available renewable resources potential for power generation in the state of Florida and then the comparison has been made for transformation sector and corresponding GHG emissions through this newly developed mitigation scenario versus Business As Usual and Florida State Policy scenario. Moreover two master mitigation scenarios (Electrification and Efficiency and Lifestyle) were crafted through combination of certain GHG mitigation scenarios. The energy demand and GHG emissions assessment is performed for both master mitigation scenarios versus business As Usual scenario for 2010 – 2050. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2014. / FAU Electronic Theses and Dissertations Collection
19

Assessing marginal abatement cost for greenhouse gas emissions from livestock production in China and Europe : accounting for uncertainties

Koslowski, Frank Johannes January 2016 (has links)
Climate change is probably the most challenging threat to mankind. International agreements have acknowledged the fact that anthropogenic GHG emissions must be reduced significantly to adhere to a maximum global warming of 2°C. The livestock sector plays a key role in achieving this target as it is a significant source of GHG emissions. While the livestock sector offers significant GHG reduction potential, it is currently neglected in international and national mitigation efforts. Therefore, scientific research must guide mitigation policy decisions with evidence of cost-efficient abatement potential that can be achieved through various mitigation technologies. Marginal Abatement Cost Curves (MACC) are an analytical tool for informing policy makers about the cost-effectiveness (CE) of mitigation. MACCs provide a relatively clear representation of a complicated issue based on their graphical design that prioritises various mitigation options in terms of their CE of abatement and enables assessment of total GHG reduction under a budget constraint. However, developing a MACC involves considerable data collection, depends on various interdisciplinary information sources and the methodology is subject to several limitations. These factors can result in uncertainties in marginal abatement cost (MAC) results, the assessment of which is often neglected in MACC literature. This research shows the main GHG emission sources in livestock production and possible mitigation options to reduce GHG emissions from these sources. After elaborating the MACC methodology, advantages, disadvantages and limitation of the engineering MACC are shown. This allows understanding the relevance of assessing and reporting uncertainty of MACCs. Two engineering MACCs are developed that show the CE abatement potentials available in the Chinese livestock sector and European Union 15 (EU-15) dairy sector in 2020, with emphasis on dietary mitigation options. The requirement of assessing CE of abatement for individual mitigation options is highlighted by separate derivation of technical and economic abatement potential for the EU-15 dairy sector. For the Chinese MACC, a scenario analysis (SA) and for the European MACC, a Monte Carlo (MC) simulation are utilised to show the relevance of assessing uncertainty in MACCs. To provide further evidence, the overall range of CE estimates for eight mitigation options found in relevant MACC literature is presented. This allows the generation of probability distribution functions of CE for each mitigation option with kernel density estimation (KDE). The results from this study show the significance of livestock and dairy production related GHG emissions in China and Europe, respectively. In China, baseline GHG emissions of livestock production are projected to increase significantly, while these of the EU-15 dairy production are predicted to decrease by 2020. It was found that enteric fermentation is the largest GHG emission source from dairy production and should be focus of mitigation policies. Both case studies showed mitigation options that offer abatement potential at high CE. Priorities should be given to biomass gasification, breeding techniques and feed supplements as tea saponins and probiotics for the Chinese livestock sector, and to animal selection, reduced tillage and dietary probiotics for the EU-15 dairy sector. The scenario analysis reveals that mid-term projections for the Chinese livestock sector are varying strongly, and utilising key variables from different projections has a significant impact on MAC results which changes the ranking of the mitigation options. The MC simulation shows the contribution of some model inputs to the uncertainty of abatement at negative cost and a high model output uncertainty regarding measure’s CE for most mitigation options. However, the ranking of the mitigation options remains stable. The range of MAC estimates for 8 mitigation options in the agricultural sector is high and variables like ‘study quality’ or ‘study location’ do not change this. The KDE was further used to rank the mitigations options based on their probability of being reported as cost-negative and shows that measures affecting soil N2O and carbon sequestration are reported to be more cost-efficient as compared to measures focusing on manure management. Based on these finding, the impact of study designs on MAC estimates and lack of communication uncertainty in MACC literature are discussed. Uncertainties that are underpinning MACC results can have significant impacts on CE and abatement potentials. To increase utilisation of MACCs by knowledge users, MACC research must prioritise assessment, quantification and report of uncertainties, compare results within the scientific literature and publish data and assumption of the MACC transparently.
20

Between a Rock and a Hot Place: Economic Development and Climate Change Adaptation in Vietnam

Pham, Khanh Katherine 18 July 2018 (has links)
This thesis explores 1) the ways that three Vietnamese infrastructure development projects undermine their cities' climate change adaptation goals and 2) the political and economic forces driving these developments. In-depth interviews highlight four main perspectives of planners and decision makers, which explain why these infrastructure projects often undermine cities' climate resilience goals. I describe how the mainstream climate change adaptation planning approach, with its emphasis on participatory planning, good governance and green growth, implicitly reinforces the neoliberal growth model, even as it seeks to ameliorate the inequality and ecological destruction that such a growth model creates. My research reveals how Vietnam's growth-first economic model and its dependence on international finance means that its climate adaptation priorities are increasingly shaped by the interests of financial institutions, and not necessarily the public interest. I argue that even if the strategies proposed by Vietnamese planners and climate adaptation practitioners are adopted, maladaptive projects will continue in Vietnam, unless the underlying economic growth imperative is addressed.

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