Sökning: "Silver Birch"

Visar resultat 1 - 5 av 33 uppsatser innehållade orden Silver Birch.

  1. 1. Growth and quality of silver birch with different improvement levels

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Hanna Liebner; [2023]
    Nyckelord :Betula pendula Roth; genetic improvement; tree breeding; diameter growth; stem quality; branches quality;

    Sammanfattning : Silver birch is the most important broadleaf tree species in the context of wood production in Fennoscandia stating 12.9% of the total volume in Sweden (Nilsson et al., 2021). LÄS MER

  3. 2. Röjningsstrategiers effekt på stubbskottsutveckling och granmedelhöjd i blandbestånd av gran och björk

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

    Författare :Max Lindhe; Jonathan Samuelsson; [2023]
    Nyckelord :röjningsstrategi; stubbskott; björk; gran;

    Sammanfattning : Olika röjningsstrategier förväntas påverka stubbskottsbildning hos röjstubbar av vårtbjörk (Betula Pendula Roth) och glasbjörk (Betula Pubescens Ehrh), men relativt få studier har gjorts på området, varför det finns utrymme för vidare forskning. Det huvudsakliga syftet med den här uppsatsen var att undersöka skillnaderna i stubbsskottsutveckling till följd av olika röjningsstrategier. LÄS MER

  4. 3. Growth of Silver birch (Betula pendula) & Downy birch (Betula pubescens) established in four different initial densities on one site in central Sweden

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Edvards Romans; [2023]
    Nyckelord :Betula pendula; Betula pubescens; plantation; initial spacing; simulation; management;

    Sammanfattning : Nowadays, there is an increased demand for timber resources and more sustainable forest management, starting from the establishment phase of the forest, e.g., planting. Depending on the management goals, number of seedlings planted and thus initial spacing can be adjusted in order not to waste resources. LÄS MER

  5. 4. Comparison of native and introduced tree species in a range from low to high productivity sites in southern Sweden

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Gailene Brazaityte; [2023]
    Nyckelord :introduced tree species; low productivity sites; moderate productivity sites; high productivity sites; Picea abies; Pinus sylvestris; Betula pendula; Picea glauca; Picea mariana; Picea sitchensis; Pinus contorta; Pseudotsuga menziesii; Abies grandis; Populus balsamifera; Larix x eurolepis; Populus tremula × Populus tremuloides;

    Sammanfattning : The dilemma of climate change, biodiversity conservation and economic efficiency in nowadays forestry leads us to search for the new solutions. Introduction of non-native tree species becomes a more frequently explored field as a solution for the future problems. LÄS MER

  7. 5. Analysis and Valorization of Bark from Silver Birch, Scots Pine, and Norway Spruce : Compositional analysis of bark from common Swedish trees in forestry, to optimize sustainability procedures and monetary value of bark residue

    Kandidat-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Isak Lindbäck; [2022]
    Nyckelord :;

    Sammanfattning : Silver birch, Scots pine, and Norway spruce are the three most common types of trees in Sweden and make up to 90% of standing volume in Swedish forests (Skogsstyrelsen 2015, 3). With millions of cubic meters of wood being cut down annually, bark and other residues that cannot be used for sawn timber is left over and burnt for energy. LÄS MER