Sökning: "Miljö"

Visar resultat 11 - 15 av 1999 avhandlingar innehållade ordet Miljö.

  1. 11. Phosphorus leaching from Swedish arable organic soils : quantification and mitigation using biochar

    Författare :Matthew Riddle; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Organic soils account for 9% or ~225,000 ha of Sweden’s 2.5 million ha of agricultural land, with around half being intensively cultivated. LÄS MER

  3. 12. Phosphorus speciation in Swedish arable soils with high leaching potential

    Författare :Frank Schmieder; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Eutrophication is threatening biodiversity and ecosystem functions in inland water bodies and estuaries world-wide. Phosphorus (P) export from arable land by e.g. leaching is a major contributor to eutrophication, with high P leaching losses from long-term manured mineral soils and cultivated organic soils (Histosols). LÄS MER

  4. 13. Modelling climate change impacts on pesticide leaching : uncertainty and scenario analysis at field and regional scales

    Författare :Karin Anna Steffens; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Climate change projections for Sweden indicate increases in both temperature and precipitation. In a warmer and wetter climate, weed and pest pressures are likely to increase, which might in turn trigger an increased use of pesticides. LÄS MER

  5. 14. Mitigation of phosphorus leaching from agricultural soils : improved fertilization and soil structure

    Författare :Annika Svanbäck; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Phosphorus (P) is an essential element in crop production, but P losses from agricultural soils are a major contributor to surface water eutrophication. This thesis examined the effects of chemical soil properties and soil structure, as governed by agricultural management practices, on P leaching from agricultural soils and how this leaching can be reduced. LÄS MER

  7. 15. Miljö och dess många ansikten i staden - om kvalitetsmätningar och organisering i Stockholm

    Författare :Petra Adolfsson; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Miljö;

    Sammanfattning : No abstract.... LÄS MER