Advanced search

Showing result 1 - 5 of 6 essays matching the above criteria.

  1. 1. SOIL GROSS NITROGEN MINERALISATION AND FOREST GROWTH IN FOUR HEMIBOREAL FOREST STANDS IN SOUTHWEST SWEDEN

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Linnéa Eriksson; [2023-04-20]
    Keywords : soil C:N; forest production; 15N isotope dilution; gross N mineralisation; ammonium; soil carbon; soil nitrogen; root exudates; stoichiometric decomposition; boreal forests; priming; microbial C limitation;

    Abstract : Boreal and temperate forests together make up the largest terrestrial net C sink in the world. They take up carbon dioxide (CO2) from the atmosphere and store it in plant biomass and soil as they grow, making them crucial in mitigating global climate change. READ MORE

  3. 2. Soil health on organic farms : linking organic farmer practices to soil health and yield

    University essay from SLU/Dept. of Soil and Environment

    Author : Lina Johansson; [2023]
    Keywords : organic farming; bulk density; management;

    Abstract : Soil health is a part of the sustainable agriculture which the EU is trying to develop. Organic farming can be one way of working towards more healthy soils. The term soil health can be divided into biological, chemical, and physical aspects of the soil that are necessary to sustain the plants grown. READ MORE

  4. 3. Comparison of mesophilic and thermophilic anaerobic sludge digestion at Hammarby Sjöstadsverk MBR pilot plant for wastewater treatment

    University essay from SLU/Department of Molecular Sciences

    Author : Jessica Sellin; [2021]
    Keywords : Anaerobic digestion; sludge; wastewater treatment; thermophilic; mesophilic; stress test;

    Abstract : Anaerobic digestion is a commonly used method for stabilisation of sewage sludge and production of biogas at municipal wastewater treatment plants (WWTPs). The hydraulic retention time for sludge in the digestion reactors is about 16 days at Henriksdal WWTP in Stockholm. READ MORE

  5. 4. 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

  6. 5. Nitrogen mineralization in a sludge-amended sandy clay loam in South Africa

    University essay from SLU/Dept. of Soil Sciences

    Author : Anna-Karin Mellin; [2005]
    Keywords : sewage sludge; nitrogen mineralisation; incubation; South Africa; soil; decomposition;

    Abstract : Sewage sludge is a solid, semi-solid or liquid byproduct produced by waste water treatment plants. It contains both compounds of agricultural value (e.g. organic material, nitrogen, phosphorous, potassium and to a lesser extent calcium, sulphur and magnesium), and pollutants (e. READ MORE