Sökning: "agricultural ditch"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden agricultural ditch.

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

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

    Författare :Emma Ryding; [2022]
    Nyckelord :Phosphorus fractionation; agricultural stream; sediment; two-stage ditch; eutrophication;

    Sammanfattning : Sweden’s environmental quality objectives “A varied agricultural landscape” and “Zero eutrophication”, aims to ensure food production while reducing negative impact from fertilizers on the environment. The input ceilings of nutrient concentrations in the Baltic Sea are still critical. LÄS MER

  3. 2. 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

  4. 3. The role of agricultural drainage in controlling the effectiveness of two-stage ditches in Sweden

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

    Författare :Neerajaa Nagarajan; [2021]
    Nyckelord :Subsurface drainage; Absorbance flourescence spectroscopy; Suspended sediments; NO3N; NH4N; PO4P; TP values; DOM indices;

    Sammanfattning : Increased agricultural activities are causing eutrophication in downstream water bodies. To mitigate nutrient leaching from cropland, various in-field and edge-of-field practices have been implemented. LÄS MER

  5. 4. A two-stage ditch – a source or sinks of nutrients and sediment : evaluation of sediment loss and inundation frequency

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

    Författare :Sheryl Ilao Åström; [2021]
    Nyckelord :Two-stage ditch; geomorphology; inundation frequency; channel evolution; water quality; agricultural ditch;

    Sammanfattning : Human-made channel systems in the agricultural landscape have received critical attention due to the dire consequences on water quality and increasing eutrophication polluting receiving aquatic systems. Trapezoidal-formed (traditional) ditches have been scrutinized and a new mitigation measure for channelized drainage systems has gained a great deal of attention i. LÄS MER

  7. 5. Effekter på klimat, hydrologi och biologisk mångfald av en potentiell våtmarksrestaurering i ån Sennan, Halmstad Kommun.

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :Joel Jansson; [2020]
    Nyckelord :Wetlands; peatlands; restoration; hydrology; green house gases; biodiversity; Våtmarker; torvmarker; restaurering; hydrologi; växthusgaser; biologisk mångfald;

    Sammanfattning : 1928 beslutades att ån Sennan norr om Karlstorp skulle sänkas, rätas ut och delvis kanaliseras för att öka arealen produktiv jordbruksmark. Men åtgärderna orsakade även flera problem både inom och utanför det område som man undersökte innan genomförandet. LÄS MER