Sökning: "cultivated organic soils"

Visar resultat 1 - 5 av 20 uppsatser innehållade orden cultivated organic soils.

  1. 1. Greenhouse gas emissions from peat soil thawing in spring : a comparison between fertilized and unfertilized soil

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Fanny Otterlin Karlsson; [2024]
    Nyckelord :agricultural soil; carbon dioxide; freeze-thaw cycles; nitrous oxide; soil temperature; water content;

    Sammanfattning : Peat soils drained for agriculture and forestry contribute to a significant amount of greenhouse gas emissions. Nitrous oxide is a greenhouse gas with high warming potential and agriculture in general accounts for about 70 % of nitrous oxide emissions. LÄS MER

  3. 2. Återvätning av organogen jordbruksmark: Möjligheter för klimatvinster i Lunds kommun

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Emma Brodén; [2020]
    Nyckelord :cultivated organic soils; rewetting; greenhouse gas emissions; City of Lund; Earth and Environmental Sciences;

    Sammanfattning : Drained organic soils are a big source of greenhouse gas (GHG) emissions. Many of these soils have, historically, been drained to increase the share of agricultural land. In Sweden, they emit around 3.4 million tonnes CO2 and 0. LÄS MER

  4. 3. Markytesänkning, växthusgasavgång och utlakning från dikad torvjord

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

    Författare :Martin Ahlvin; Sofia Alexandersson Ros; [2020]
    Nyckelord :Dikad torvmark; höjdmätning; markytesänkning; koppargödsling; växthusgaser;

    Sammanfattning : Greenhouse gas emissions and land subsidence on four cultivated peat soils (Martebo, Örke, Kälkestad, Lidhult) have been investigated by measuring emissions of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) in field and lab. Greenhouse emitted gas (mg/h) from undisturbed soil cores was measured in lab. LÄS MER

  5. 4. Carbon - Past, Present and Future : Effects of 20th century land use on soil organic carbon in Nynäs nature reserve, Sweden

    Kandidat-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Rebecka Gullberg; [2018]
    Nyckelord :;

    Sammanfattning : The land use sector has the potential not only to lower its greenhouse gas emissions, but also to sequester CO2 in soils through land use change and management practices. This represents an important mitigation opportunity, but there is a lack of knowledge in the potential of carbon sequestration between different land use types. LÄS MER

  7. 5. Kalkningens påverkan på växthusgasemissioner från odlad torvjord

    Kandidat-uppsats, SLU/Dept. of Soil and Environment

    Författare :Lisa Jörblad; [2018]
    Nyckelord :CO2; N2O; dränering; skrymdensitet; nedbrytning; vattenhalt;

    Sammanfattning : Peat soils are used for agriculture and to improve the conditions they are drained and limed. These actions lead to improved living conditions for the microorganisms that live in the soil which increases the decomposition of the organic matter. LÄS MER