Sökning: "methane CH4"

Visar resultat 6 - 10 av 124 uppsatser innehållade orden methane CH4.

  1. 6. Short-Time Temporal Changes of CH4 Fluxes in Different Tropical Tree Species : In-situ research regarding methane emissions from inundation-adapted Amazonian tree species in Jardim Bot�nico do Rio de Janeiro.

    Kandidat-uppsats, Linköpings universitet/Tema Miljöförändring

    Författare :Emelie Athley; [2023]
    Nyckelord :Methane CH4 ; environment; greenhouse gas GHG ; emission; Amazonian tree species; tropical trees; wetland; flux; CH4 emission from plants; tree mediated CH4 emission; Global CH4 budget; environmental stressors; meteorological parameters; natural CH4 emissions;

    Sammanfattning : Methane (CH4) is guaranteed to affect climate change and is essential in rising temperatures. Scientists have known for over two decades that wetlands emit CH4 to such an extent that it affects our climate. Tropical trees that grow in wetlands tend to emit or act as a conduit of CH4, to the extent that it has a negative environmental impact. LÄS MER

  3. 7. Att skapa resiliens med hjälp av kolinlagring och biodiversitet : en fallstudie med beräkning av kolförråd och kolbalans i Tierps kommun

    Kandidat-uppsats, Högskolan i Gävle/Avdelningen för byggnadsteknik, energisystem och miljövetenskap

    Författare :Elisabeth Bäckman; Ronja Sundström; [2023]
    Nyckelord :carbon sink; carbon source; biodiversity; climate change; kolsänka; kolkälla; biologisk mångfald; klimatförändringar;

    Sammanfattning : Markanvändningssektorn (LULUCF) står för 7–11 % av de globala utsläppen av växthusgaser, däribland koldioxid (CO2), metan (CH4) och dikväveoxid (N2O). Genom förändringar av markanvändningen kan kolinlagringen i mark och vegetation ökas och sektorn kan istället vara med och bromsa klimatförändringarna. LÄS MER

  4. 8. Effects of Forest Ditch Cleaning on Surface Water Quality

    Master-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Emeli Arvidsson; [2023]
    Nyckelord :Ditch cleaning; forest clear-cut; water quality; water chemistry;

    Sammanfattning : Ditch cleaning (DC) is recommended by authorities to Swedish landowners to maintain forest productivity after forest harvest by lowering groundwater tables of catchment soils. Knowledge regarding the impact of this practice on surface water quality is limited, and results from previous research vary. LÄS MER

  5. 9. How the Choice of Primary Treatment Affects the Biogas Potential of Primary Sludge

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Fanny Blom; [2022]
    Nyckelord :wastewater treatment; primary treatment; biogas potential; primary settling treatment; rotating belt filter; chemically enhanced primary treatment; environmental engineering; water resources engineering; Technology and Engineering;

    Sammanfattning : The global heating has resulted in rising temperatures and more extreme weather conditions around the world. In combination with increasing energy demands, this has led to an increasing demand of renewable energy. One option is utilizing the wastewater to produce biogas. There-fore, wastewater can be seen as a resource rather than waste. LÄS MER

  7. 10. Emission of greenhouse gases from constructed wetlands : Nutrient status in relation to methane and nitrous oxide emission

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Christian Lundström; [2022]
    Nyckelord :Constructed wetland; greenhouse gas emission; nutrient status; ebullition; Anlagd våtmark; växthusgasutsläpp; näringsstatus; ebullition;

    Sammanfattning : Agricultural land releases large amounts of nitrogen and phosphorus to water bodies which causes eutrophication. Creating wetlands on agricultural land is one way to prevent this major issue. However, constructed wetlands are a large emission source of greenhouse gases. LÄS MER