Sökning: "Forests and forestry"

Visar resultat 21 - 25 av 189 avhandlingar innehållade orden Forests and forestry.

  1. 21. Modelling Chemical Weathering in Different Scales

    Författare :Johan Holmqvist; Kemiska institutionen; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biochemical technology; Kemiteknik och kemisk teknologi; Chemical technology and engineering; Sustainable biomass production; Kriging; Illite; Epidote; Chemical weathering; Dissolution; Biokemisk teknik; Silviculture; forestry; forestry technology; Skogsvetenskap; skogsbruk; skogsteknik;

    Sammanfattning : Chemical weathering is one of the most important processes supporting life on Earth. Chemical weathering continuously contributes macronutrients and micronutrients to the soil solution. These recycling, essential elements are used as building blocks for all organic living matter. LÄS MER

  3. 22. Non-industrial private land use and forest management : landscape and policy perspectives

    Författare :Renats Trubins; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : Demand for raw materials and food has long been rewarding intensive production oriented land uses, which has led to various environmental and social issues. Policies attempting to reconcile the interests and claims of different groups in society emerge from political process. LÄS MER

  4. 23. Impacts of pine and eucalyptus plantations on carbon and nutrients stocks and fluxes in miombo forests ecosystems

    Författare :Benard Guedes; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Knowledge of how commercial pine and eucalyptus plantations affect soil carbon and nutrient status is important in Mozambique, where incentives are available to increase the area of forest plantations and also to conserve mature miombo forests. Tree species growing on similar sites may affect ecosystem carbon differently if they allocate carbon to aboveground and belowground parts at different rates. LÄS MER

  5. 24. Cadmium induced kidney dysfunction in rodents and its relevance to biomonitoring : experimental and environmental findings

    Författare :Per Leffler; Umeå universitet; []
    Nyckelord :Forestry; forest worker; chain saw; mechanization; rationalization; labour history; working life; technical change; cutting operation;

    Sammanfattning : This study deals with how workers actively introduced a new technique to their own labour process. More specifically, it is concerned with how Swedish forest workers during the 1950s gradually replaced the manual one-man crosscut saw with the motor-driven saw. LÄS MER

  7. 25. Individual-tree-selection in uneven-sized Norway spruce stands in southern Sweden : Developments of tools for simulation and optimization

    Författare :Nils Fagerberg; Johan Bergh; Peter Lohmander; Stergios Adamopoulos; Hubert Hasenauer; Linnéuniversitetet; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; continuous cover forestry; selective cutting; Picea abies; uneven-aged; single-tree-selection; growth model; knot size model; Forestry and Wood Technology; Skog och träteknik;

    Sammanfattning : Individual-tree-selection (ITS) is a continuous cover forestry method that aims to utilize the uneven-sized stand structure through optimized individual tree selections. ITS is an interesting management alternative to rotation forestry in terms of production of multiple benefits and forest owner profitability. LÄS MER