Sökning: "permanent grasslands"

Hittade 5 uppsatser innehållade orden permanent grasslands.

  1. 1. The potential nitrous oxide emissions in a permanent grassland chronosequence

    Kandidat-uppsats, SLU/Dept. of Forest Mycology and Plant Pathology

    Författare :Sandra Lillsjö Kronblad; [2023]
    Nyckelord :nitrous oxide emission; permanent grasslands; denitrification; nitrous; reen house gas; agriculture;

    Sammanfattning : As a part of a larger project (Belowground biodiversity of grasslands – conservation needs and potential to promote sustainable agriculture), this study aims to investigate potential nitrous oxide (N2O) emissions and microbial gene abundances needed for the production (nirS and nirK) and reduction (nosZI and nosZII) of nitrous oxide in soil of permanent grasslands of various age. Thegrasslands have at different times been converted to permanent grasslands and are of interest because of the possibility to shed more light about the passage of time’s affects on the soil microbialcommunities and their activity. LÄS MER

  3. 2. Effekter av markstruktur på tryckutbredning och packningsbenägenhet i åkermark : en jämförande fältstudie mellan konventionellt jordbearbetad åkermark och permanent bevuxen åkermark

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

    Författare :Gabriel Thor; [2022]
    Nyckelord :markpackning; hållfasthet; markstruktur; marktextur; direktsådd; reducerad jordbearbetning;

    Sammanfattning : Att gårdar blir större är en tydlig trend inom det svenska lantbruket. Med det följer även en större efterfrågan på större maskiner och redskap. Denna rationalisering medför en ökad risk för att åkermarken blir kraftigt packad och därigenom skadad, vilket på sikt kan leda till försämrad bördighet. LÄS MER

  4. 3. Ekosystemtjänster i gräsmarker

    Kandidat-uppsats, SLU/Dept. of Ecology

    Författare :Anna Pettersson; [2020]
    Nyckelord :gräsmarker; SUPER-G; ekosystemtjänster; biologisk mångfald; matproduktion; rekreation; kolinlagring;

    Sammanfattning : The interest in the importance of grasslands in Europe has been addressed by the EU project SUPER-G, whose objective is to increase the productivity of grasslands while also exploring how these lands contribute to other types of ecosystem services, i.e. various benefits that humans receives from nature. LÄS MER

  5. 4. How former arable fields with permanent grazing differ from managed semi-natural pastures in Sweden

    Kandidat-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Isolde Galin; [2019]
    Nyckelord :grasslands; former arable fields; species richness; species composition; semi-natural pastures; Ellenberg indicator values;

    Sammanfattning : New farming needs and innovations have, over time, led to changes in land use. Arable fields have been turned into pastures and semi-natural pastures into arable fields. LÄS MER

  7. 5. Effects of land use on wetland carbon storage and ecosystem services in the tropics : A first estimation investing rural wetlands in central and eastern Uganda

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Astrid Hedman; [2019]
    Nyckelord :tropical ecosystems; wetlands; carbon stocks; ecosystem services; climate change;

    Sammanfattning : Wetlands provide important ecosystem services (ES) by storing large amounts of organic carbon (OC) and being of high biological, cultural, and economical value. Uganda is covered by vast wetland areas but has with a booming population rapidly been decreasing due to pressure on lands. LÄS MER