Sökning: "greenhouse gas emissions"

Visar resultat 1 - 5 av 278 avhandlingar innehållade orden greenhouse gas emissions.

  1. 1. Gas Exchange over Aquatic Interfaces and its Importance for Greenhouse Gas Emission

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jovana Kokic; Uppsala universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; gas exchange; lake; stream; lake sediment; headwaters; carbon dioxide; methane; greenhouse gas emission; carbon; turbulence; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Aquatic ecosystems play a substantial role in global cycling of carbon (C), despite covering only about 4% of the earth surface. They emit large amounts of greenhouse gases (GHG) to the atmosphere, comparable to the amount of C stored annually in terrestrial ecosystems. In addition, C can be buried in lake sediments. LÄS MER

  2. 2. Land use effects on greenhouse gas emissions from boreal inland waters

    Detta är en avhandling från Umeå : Umeå University

    Författare :Marcus Klaus; Umeå universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; greenhouse gas; boreal forest; carbon cycling; whole-ecosystem experiment; limnology; metabolism; forest clearcutting; nitrogen enrichment;

    Sammanfattning : Anthropogenic activities perturb the global carbon and nitrogen cycle with large implications for the earth’s climate. Land use activities deliver excess carbon and nitrogen to aquatic ecosystems. In the boreal biome, this is mainly due to forestry and atmospheric deposition. LÄS MER

  3. 3. Building renovation processes towards low greenhouse gas emissions and energy use

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Stefan Olsson; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Renovation processes; buildings; energy efficiency; greenhouse gas emissions; target levels;

    Sammanfattning : Buildings from the record year era are now 40 – 55 years old and in many cases in need of extensive renovation measures. This need for renovation could be seen as an opportunity to achieve overarching sustainability target levels and to perform renovation with a holistic approach. LÄS MER

  4. 4. Drivers of Climate Change? Political and Economic Explanations of Greenhouse Gas Emissions

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Ole Martin Laegreid; Göteborgs universitet.; Gothenburg University.; [2017]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Greenhouse gas; Climate change; Environmental Kuznets curve; Political institutions;

    Sammanfattning : This PhD dissertation examines if social scientific theories can explain historical trajectories of greenhouse gas emissions. The manuscript includes an introductory chapter and four articles that consider annual emissions in countries across the world, during the time-period 1960-2014. LÄS MER

  5. 5. Effects of forest management on greenhouse gas fluxes in a boreal forest

    Detta är en avhandling från Lund University, Faculty of Science, Department of Physical Geography and Ecosystem Science

    Författare :Patrik Vestin; Lunds universitet.; Lund University.; [2017-08]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Forest management; Greenhouse gas fluxes; Clear-cutting; Thinning; Stump harvesting; Selective cutting; Eddy-covariance; Flux-gradient; Greenhouse gas budgets; CO2; CH4; N2O;

    Sammanfattning : Skogar täcker ca 31% av jordens landyta och lagrar stora mängder kol i biomassa och i marken. I klimatavtalet från Paris 2015 lyfts skogars roll som sänkor och reservoarer av kol fram och undertecknande länder uppmanas att implementera strategier för hållbart skogsbruk som ytterligare förstärker skogars roll som sänkor av växthusgaser. LÄS MER