Sökning: "soil horizons"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden soil horizons.

  1. 1. Soil Carbon Stocks in Old Growth Forest : Drivers of variability in soil organic carbon stocks in old growth boreal forests

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Elis Ingvarsson; [2023]
    Nyckelord :old growth forest; boreal; soil organic carbon stocks; climate gradient;

    Sammanfattning : Soil organic carbon (SOC) is the largest carbon pool in terrestrial ecosystems, which plays an important role in climate change by regulating atmospheric carbon dioxide. Sweden’s forest management has led to a decrease in old growth forests. This change in land use can affect SOC levels in these forests. LÄS MER

  3. 2. Greenhoue gas flux over a 50-year post permafrost thaw gradient. Decomposition of soil organic carbon from the Swedish tussock tundra.

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Johan Martinelli; [2020-02-11]
    Nyckelord :greenhouse gas; permafrost;

    Sammanfattning : As the globe is warming the extent of permafrost drastically decreases in the high latitudes. Upon thaw the stored soil organic carbon (SOC) undergoes rapid decomposition and is partly released as trace gases to the atmosphere. LÄS MER

  4. 3. Effects of organic matter depletion on fungal communities in a reconstructed boreal forest podzol system

    Master-uppsats, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Katharine Alice King; [2020]
    Nyckelord :ectomycorrhizal fungi; fungal community structure; fungal diversity; high throughput sequencing; podzol; soil horizons;

    Sammanfattning : The boreal forest biome serves as a valuable resource, both as a source of wood, pulp and biofuel, and as a sink of atmospheric carbon (C). A large proportion of C is sequestered to the soil of the boreal biome, however belowground processes are still poorly understood. LÄS MER

  5. 4. Binding of per- and polyfluoroalkyl substances (PFASs) to organic soil horizons of peat and mor : effect of solution chemistry and soil organic matter composition

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

    Författare :Jennifer Makselon; [2019]
    Nyckelord :sorption; electrostatic interactions; isotherms; partitioning coefficient; soil organic matter; cation; PFOS; PFOA; desorption;

    Sammanfattning : The understanding of sorption processes of per- and polyfluoroalkyl substances (PFASs) in soils is important for the determination of their fate and transport in the environment. The sorption behavior of PFASs of varying chain length and hydrophilic headgroup was studied in three organic soils, two peat soils and one mor layer, with differing chemical composition of the soil organic matter (SOM). LÄS MER

  7. 5. Variationer i löslighet (Kd) inom Kindla och dess beroende av pH

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

    Författare :Adam Eriksson; [2016]
    Nyckelord :Kd; fördelningskoefficient; löslighet; integrated monitoring; avrinnings område ARO ;

    Sammanfattning : Luftvårdskonventionen antogs 1979 för att minska utsläppen av långspridda luftföroreningar. Denna konvention antogs efter det att Sverige och Norge presentera bevis under 1970-talet att försurning av vatten och skog berodde på utsläpp av föroreningar från andra länder i Europa. LÄS MER