Sökning: "kvävemineralisering"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet kvävemineralisering.

  1. 1. A comparison of protein complexation capacity among six boreal species and the consequences for nitrogen mineralization

    L3-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Jennie Sverker; [2009]
    Nyckelord :protein complexation capacity; nitrogen cycle; fire chronosequence; succession; boreal species; boreal ecology; nitrogen mineralization; competition;

    Sammanfattning : Nitrogen (N) is considered to be the most limiting nutrient for productivity in boreal forests, and the ability of plants to complex protein during decomposition is considered to be an important mechanism by which some plants regulate the N cycle. In this study I investigated whether six boreal plant species differed in their ability to complex proteins. LÄS MER

  3. 2. C and N mineralization and earthworm populations in a Norway spruce forest at Hasslöv (SW Sweden), 25 years after liming

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Janneke Ravenek; [2009]
    Nyckelord :carbon; nitrogen; mineralization; liming; acidification; earthworm;

    Sammanfattning : During the last decades of the 20th century, acid rain affected many areas in Europe and NorthernAmerica. Soil acidification was considered a large problem for forest ecosystems, because it wasexpected that tree growth would be hampered by low pH, nutrient deficiencies and highconcentrations of free Al. LÄS MER

  4. 3. Kvävemineralisering från stallgödsel beroende på olika grad av inblandning i mark

    Kandidat-uppsats, SLU/Div. of Precision Agriculture

    Författare :Erik Jönsson; [2009]
    Nyckelord :nitrogen; manure; plant nutrients; slurry; organic fertilizers;

    Sammanfattning : The impact of the distribution in the soil volume of two farm manures on the net mineralization and immobilization processes of nitrogen were studied in an incubation experiment. Cattle slurry and broiler litter were placed in the soil with three procedures for incorporation including placement on top of the soil (TOP), in the middle of the soil (MID) and mixed homogenously with the soil (MIX). LÄS MER

  5. 4. Askgödsling och dess lämplighet i torvmarksskogar tillhörande Sveaskog Förvaltnings AB : en litteraturstudie

    L3-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Tobias Norrbom; [2008]
    Nyckelord :gödsling; aska; torvmark; askåterföring; skogsproduktion; tungmetall; växthusgas;

    Sammanfattning : During whole-tree harvesting, there is a risk that the soil will become impoverished of nutrients. To prevent this, nutrients are returned to the harvested site as wood ash. This action also reduces the risk of soil acidification. LÄS MER

  7. 5. Torkat bioavfall som jordförbättringsmedel

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för geovetenskaper

    Författare :Sofia Blad; [2007]
    Nyckelord :Dried biowaste; soil conditioner; nitrogen mineralization; nitrogen immobilization; inorganic nitrogen; germination test;

    Sammanfattning : The main project Dry preservation of source-separated organic household wastes involves a new technique for treatment of biowaste through drying. Investigations are going on to determine how the dried biowaste best can be used to close the natural circular flow of nutrients. LÄS MER