Essays about: "dikning"

Showing result 6 - 10 of 23 essays containing the word dikning.

  1. 6. Delineation of Ditches in Wetlands by Remote Sensing

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : Andreas Gustavsson; Selberg Martin; [2018]
    Keywords : GIS; drainage network; LiDAR; GIS; dräneringsnätverk; LiDAR;

    Abstract : Wetlands have been heavily affected by human-alteration, this is done to drain thewetland so that the ground can be used for other purposes such as forestry oragriculture. With high accuracy data available now, it is possible to use differentmethods automatically to identify these ditches in wetlands or other areas. READ MORE

  3. 7. Är uteblivna bränder i skogslandskapet en bidragande orsak till igenväxning av myrmarker?

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Martin Hederskog; [2018]
    Keywords : skogsbrand; myr; trädmortalitet; plantetablering; forest fire; mire; tree mortality; plant recruitment;

    Abstract : Traditionellt har myrar ansetts vara stabila ekosystem med långsamma förändringar av vegetationen över tid. De senaste decennierna har dock förändringar på öppna myrar uppmärksammats allt oftare. Inväxningen av träd på myrmark sker i hela landet och är som snabbast i de södra delarna. READ MORE

  4. 8. How does drainage affect hydrology and hydrochemistry in boreal peatlands?

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Albin Enetjärn; [2018]
    Keywords : trenching; ditching; draining; dikning; dikningseffekter; torvmark; markavvattning;

    Abstract : Boreal peatlands are substantial terrestrial carbon storages. They are also important for the function of several large-scale cycles and systems that humanity benefits from. Drainage affects peatlands by establishing a new, lower equilibrium for the groundwater table. READ MORE

  5. 9. Privata skogsägares kunskap om dikning på skogsmark

    University essay from SLU/School for Forest Management

    Author : John Hedlund; [2017]
    Keywords : Produktionshöjande åtgärder; Markavvattning; Skogsbruk;

    Abstract : The purpose of this study is to investigate how good knowledge private forest owners have about draining forest land. The method used was a survey with questions on contemporary methods. The questionnaire was sent out to 50 forest owners. The study shows that forest owners lacked in knowledge about temporary draining during stand establishment. READ MORE

  6. 10. Acid Sulfate Soils and Metal Accumulation in Sediments in Rosån Catchment, Northern Sweden

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Carola Lindström; [2017]
    Keywords : Acid sulfate soils; increased metal concentrations; anthropogenic activity; Sura sulfatjordar; ökade metallkoncentrationer; mänsklig påverkan;

    Abstract : Global environmental concerns arise when marine deposits with fine-grained iron sulfide-rich sediments (FeS and FeS2), now situated above sea level, oxidize from anthropogenic lowering of the groundwater table. The oxidation of iron sulfides decreases the soil pH and the acidic environment of these Acid Sulfate Soils (AS) soils increase weathering and mobilization of metals into adjacent watercourses, lakes and estuaries. READ MORE