Essays about: "kvävemineralisering"

Showing result 1 - 5 of 7 essays containing the word kvävemineralisering.

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

    University essay from SLU/Dept. of Forest Ecology and Management

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

    Abstract : 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. READ MORE

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

    University essay from SLU/Dept. of Ecology

    Author : Janneke Ravenek; [2009]
    Keywords : carbon; nitrogen; mineralization; liming; acidification; earthworm;

    Abstract : 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. READ MORE

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

    University essay from SLU/Div. of Precision Agriculture

    Author : Erik Jönsson; [2009]
    Keywords : nitrogen; manure; plant nutrients; slurry; organic fertilizers;

    Abstract : 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). READ MORE

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

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Tobias Norrbom; [2008]
    Keywords : gödsling; aska; torvmark; askåterföring; skogsproduktion; tungmetall; växthusgas;

    Abstract : 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. READ MORE

  6. 5. Identifying possible sources of ammonium ions and arsenic in groundwater in the Nam Du area, Vietnam

    University essay from SLU/Dept. of Soil Sciences

    Author : Peter Harms-Ringdahl; [2007]
    Keywords : groundwater; contamination sources; ammonium ions; arsenic species; redox potential; stable isotopes; Hanoi; Vietnam;

    Abstract : Concentrations of arsenic and ammonium ions well above drinking water standards have been detected in aquifers which supply Hanoi, the capital of Vietnam, with fresh water. Chemical analyses showed arsenic and ammonium ion concentrations varying between 27 – 264 μg/l in freshwater and 1.8 – 34.7 mg/l in groundwater. READ MORE