Sökning: "Total Nitrogen"

Visar resultat 16 - 20 av 369 uppsatser innehållade orden Total Nitrogen.

  1. 16. N2 fixation of three legume species in an agroforestry system

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

    Författare :Hsiang-Ju Fan; [2023]
    Nyckelord :nitrogen; dinitrogen fixation; legumes; groundnut; stylo; pinto peanut; understorey crop;

    Sammanfattning : Due to the strong soil erosion caused by agricultural activities and sloping landscape, agroforestry has been introduced as a potentially sustainable cropping practice in the mountainous NW Vietnam. Using legumes as understorey crops in these systems has a potential to limit erosion and smother weeds, as well as provide additional nitrogen (N) to the system. LÄS MER

  3. 17. En studie om lakvattenhantering vid Gräfsåsensavfallsanläggning : En studie i syfte att föreslå lämpliga system avreningstekniker

    Kandidat-uppsats, Mittuniversitetet/Institutionen för naturvetenskap, design och hållbar utveckling (2023-)

    Författare :Pontus Karlström; [2023]
    Nyckelord :Leachate water; Landfill; Treatment tehnology; BREF characterization; Lakvatten; reningstekniker; deponier; BREF karaktärisering;

    Sammanfattning : För att främja en hållbar utveckling har FN satt upp 17 vägledande globala miljömål som nationell lagstiftning bör utformas efter, vilket Sverige har gjort. För att se till att miljölagstiftningen följs av verksamheter utövas tillsyn mot vissa typer av verksamheter, bland annat deponier. LÄS MER

  4. 18. Nitrogen legacies in agricultural catchments : an analysis of 170 years of nitrogen legacies data in four Swedish agricultural catchments

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

    Författare :Laura-Ainhoa Prischl; [2023]
    Nyckelord :nitrogen mass balance; nitrogen surplus; land use trajectories; hysteresis effect; water quality; agriculture; nitrogen surplus; land use trajectories; hysteresis effect; water quality; agriculture;

    Sammanfattning : Despite the enforcement of legislation and application of measures, nitrogen (N) levels continue to be high in streams. One of the reasons for the low N reduction, is the legacy accumulation of N. LÄS MER

  5. 19. TRACKING WASTEWATER EMISSIONS IN RIVERS ENTERING GULF OF BOTHNIA COAST

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

    Författare :Helen Mkandawire; [2023]
    Nyckelord :Nutrients inputs; wastewater; coastal waters; Gulf of Bothnia; wastewater emissions; nutrient transportation; marine water; nutrient loading; eutrophication.;

    Sammanfattning : The Gulf of Bothnia consists of two sub-basins in the northern Baltic Sea: the Bothnian Sea (salinity 4-5‰) and Bothnian Bay (salinity 2-3‰). Changing nutrient concentrations and signs of eutrophication has recently been observed in the Gulf of Bothnia. LÄS MER

  7. 20. Modelling organic farming systems : is livestock needed for a functioning nitrogen cycle and food production?

    Master-uppsats, SLU/Dept. of Energy and Technology

    Författare :Franziska Johanna Galler; [2023]
    Nyckelord :organic farming; livestock; stockless farming; nitrogen cycle; nitrogen use efficiency; nitrogen recycling; nutritional value; human nutrition; food system;

    Sammanfattning : Livestock has always been an integral part of nutrient management on organic farms. Environmental, economic and idieological trends are leading to an increasing specialization of agriculture away from mixed farms with livestock. LÄS MER