Sökning: "ditching"

Visar resultat 21 - 25 av 27 uppsatser innehållade ordet ditching.

  1. 21. Klimatets och människans inverkan på tallens etablering på sydsvenska mossar under de senaste århundradena : en dendrokronologisk och torv- stratigrafisk analys av tre småländska mossar

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Jonna Axbom; [2012]
    Nyckelord :scots pine; ditching; raised bog; dendrochronology; peat stratigraphy; tall; dikning; högmosse; dendrokronologi; torvstratigrafi; Earth and Environmental Sciences;

    Sammanfattning : Under de senaste 100-200 åren har tall (Pinus sylvestris) etablerats på många sydsvenska mos- sar. Eftersom tall trivs i relativt torra och näringsrika miljöer, ger detta en indikation på att grundvattennivån i mos- sarna har sänkts. LÄS MER

  3. 22. Development of a dynamic calculation tool forsimulation of ditching

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Marc Pilorget; [2011]
    Nyckelord :SPH; kernel; incompressible; Poisson s equation; boundary conditions;

    Sammanfattning : The present document is the final master thesis report written by Marc PILORGET,student at SUPAERO (home institution) and KTH (Royal Institute of Technology,Exchange University). This six months internship was done at DASSAULT AVIATION(Airframe engineering department) based in Saint-Cloud, France. LÄS MER

  4. 23. Metod för inventering av underhållsbehov för skogsdiken

    Kandidat-uppsats, Institutionen för ekologi, miljö och geovetenskap

    Författare :Cecilia Larsson; [2011]
    Nyckelord :ditching; inventory methods; forest production; water quality; biodiversity;

    Sammanfattning : Large areas have been ditched in Sweden during the past 100 years to improve the forest production. Ditching and also maintenance of old ditches are operations having mainly negative effects on water quality, flora and fauna and changing characteristics of soil. LÄS MER

  5. 24. Vattenkvalitén i Fredstorpsbäcken : dikad bäck på fastigheten Rämningstorp i Skara kommun

    L3-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Malin Svensson; [2007]
    Nyckelord :dikesrensning; järnockra; järnbakterier; sötvattenskemi; sötvattensekologi; dikning;

    Sammanfattning : The estate of Rämningstorp in the region of Västergötland in southern Sweden is administered by the holding trust company Skogssällskapet i Skövde. In 1999 measures were taken by Skogssällskapet to drain the stream Fredstorpsbäcken as a means to increase the forest productivity of the surrounding lands, which are situated on the estate of Rämningstorp. LÄS MER

  7. 25. Element balances and retention for wetlands in the forest environment : case study Bohyttan fen

    L3-uppsats, SLU/Dept. of Forest Soils

    Författare :Gina Lucci; [2007]
    Nyckelord :retention; element balances; wetlands; peatland; water quality; forestry;

    Sammanfattning : The importance of water quality, protection of watersheds and restoration of aquatic ecosystems has steadily been gaining attention. Wetlands perform many functions that are beneficial to water quality, and also play an important role in forested landscapes. Peatlands in forested catchments act as both sinks and sources for different nutrients. LÄS MER