Sökning: "phosphorus and sediment losses"

Hittade 5 uppsatser innehållade orden phosphorus and sediment losses.

  1. 1. The role of bed sediments for sorption of phosphorus in remediated ditches in Sweden

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Linus Holgersson; [2022]
    Nyckelord :Phosphorus; Two-stage ditch; Equilibrium phosphate concentration; Phosphorus retention; Eutrophication; Soluble reactive phosphorus;

    Sammanfattning : Human activities have increased nutrient losses to agricultural ditches and streams, including phosphorus. Phosphorus leakage leads to a worsening of water quality in downstream ecosystems, including lakes and seas. In addition, higher phosphorus concentrations lead to eutrophication, which negatively affects aquatic systems. LÄS MER

  3. 2. Phosphorus accumulation in constructed wetlands : A study of 10 wetlands constructed on agricultural clay soils in Södermanland

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Gabriella Corbee; [2021]
    Nyckelord :Phosphorus retention; sedimentation; hydraulic load; Fosforavskiljning; sedimentation; hydraulisk belastning;

    Sammanfattning : Eutrophication is a major problem causing algal blooms and impaired water quality, especially regarding coastal areas and seas. It is a result of an excessive supply of nutrients such as phosphorus (P), where agriculture accounts for the largest share of the anthropogenic nutrient load. LÄS MER

  4. 3. Can we use optical sensors in highly turbid agricultural streams?

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

    Författare :Ana Paula Abade Smoginski; [2017]
    Nyckelord :optical sensors; phosphorus and sediment losses; turbidity; organic matter; agricultural catchments;

    Sammanfattning : Optical sensors are advanced technology capable of monitoring water quality con-tinuously at high temporal resolution. Optical sensors are prone to errors when deployed in streams with high sediment content. Agricultural streams, with high and variable suspended sediment loads, can affect the performance of these instru-ments. LÄS MER

  5. 4. Åtgärder för reduktion och tillvaratagande av näringsämnen från dräneringsvatten - En tillämpning på Höje å

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Therese Hernvall; [2015]
    Nyckelord :Höje å; övergödning; återförsel; jordbruk; vattenvårdsåtgärder; fosfor; kväve; dräneringsvatten; Earth and Environmental Sciences;

    Sammanfattning : Eutrophication is one of the biggest environmental problems in Scanian waters, where agriculture has the largest input. Through soil cultivation and usage of fertilizers, nutrients are added and released. If no uptake occurs nutrients can be further transported to watercourses through surface runoff or the drainage system. LÄS MER

  7. 5. Identifiering av områden med risk för fosforförluster genom ytavrinning : metodutveckling med GIS

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

    Författare :Anders Larsson; [2011]
    Nyckelord :erosion; GIS; phosphorous; surface runoff; USLE; USPED;

    Sammanfattning : The eutrophication of lakes and seas with the algal bloom and deficiency inoxygen that follow, has been given priority by the Swedish government as oneof 16 environmental objectives. The purpose of this project was to develop a toolbased on a simple model, limited amount of data and geographic informationsystem (GIS) to identify areas with risk for phosphorus losses due to surfacerunoff. LÄS MER