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Showing result 21 - 25 of 42 essays matching the above criteria.

  1. 21. Comparison of forest fire severity classification models based on aerial images and Landsat 8 OLI/TIRS images of a forest fire area in central Sweden

    University essay from SLU/Dept. of Forest Resource Management

    Author : Adrian Straker; [2016]
    Keywords : forest fire; fire severity; stereo photogrammetry; digital surface model; aerial images; NDVI; NBR; Image Matching; Västmanland;

    Abstract : Due to different level of fire severity a diverse mosaic of vegetation pattern establishes after the occurrence of a forest fire. In order to study the effects of forest fires and to plan future remediation of the burned area remote assessment of forest fire severity has shown to be a valuable tool. READ MORE

  3. 22. Regeneration dynamics of pedunculate oak in natural temperate forests: a case from southern Sweden

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Olle Finnström; [2016]
    Keywords : eutrophic temperate mixed broadleaf forest; competition; crown size; disturbance; oak regeneration; pedunculate oak; quercus robur; stem diameter; tree height;

    Abstract : Oaks are some of the most wide-spread and iconic trees in human culture, yet populations of oaks are declining due to land conversion, disease and because of lack of disturbance in temperate forests. Oaks are fairly light demanding trees, requiring large-scale disturbance to create suitable environments for regeneration. READ MORE

  4. 23. Restoration of natural disturbances: impact on distribution and performance of dominant ants (Formica spp.) by fire and gap dynamics

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Rebecca Larsson; [2015]
    Keywords : boreal forests; conservation management; honeydew harvesting efficiency; nest density; Sweden;

    Abstract : Disturbance regimes caused by fire and wind storms used to be common features in the Swedish boreal forests. However, due to an intense forest management, these events have declined rapidly. READ MORE

  5. 24. Restoring biodiversity in degraded secondary rain forest in Sabah, Malaysia : natural regeneration of trees after restoration treatments

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

    Author : Sara Waern; [2015]
    Keywords : skogsbrand; selektiv avverkning; Dipterocarpaceae; assisterad naturlig föryngring ANR ; forest fire; selective logging; Dipterocarpaceae; assisted natural regeneration ANR ;

    Abstract : Many tropical rain forests has been lost or degraded as a result of human activities and environmental factors. Since the level of biodiversity is high in the tropics, maintaining these areas is of great importance. Forests like these are often assumed to benefit from forest restoration and rehabilitation. READ MORE

  6. 25. Restaureringsåtgärders korttidseffekter på biodiversiteten bland vedlevande skalbaggar (Coleoptera) på granstammar

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

    Author : Amanda Trulsson; [2015]
    Keywords : restaurering; bränning; luckhuggning; död ved; biologisk mångfald;

    Abstract : Skogsbruket har haft en stor negativ påverkan på skogens biodiversitet. Speciellt gäller detta saproxyliska organismer och arter starkt gynnade av eller beroende av skogsbrand. READ MORE