Sökning: "forest cover"

Visar resultat 1 - 5 av 91 avhandlingar innehållade orden forest cover.

  1. 1. Carbon Balance Implications of Forest Biomass Production Potential

    Detta är en avhandling från Östersund : Mid Sweden University

    Författare :Bishnu Chandra Poudel; Mittuniversitetet.; [2014]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Forestry and Wood Technology; Skog och träteknik; forest management; silviculture; clear-cut forestry; continuous-cover forestry; substitution; total carbon; climate benefit; climate change;

    Sammanfattning : Forests in boreal and temperate forest-ecosystems have importance for carbonbalance since they sequester large amount of atmospheric carbon by uptake ofcarbon-dioxide during photosynthesis, and transfer and store carbon in the forestecosystem. Forest material can be used for bio-fuel purposes and substitute fossilfuels, and supply wood products, which can replace carbon-and-energy-intensivematerials. LÄS MER

  2. 2. Reserve selection in boreal forest

    Detta är en avhandling från Östersund : Mid Sweden University

    Författare :Johanna Lundström; Sveriges lantbruksuniversitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : Most boreal forests in North Europe are intensively managed, and the forest landscape is far from its natural stage leading to hundreds of species being threatened in Sweden alone. Reserves are established to protect biodiversity, but since the resources available for conservation do not cover all species in need of protection, effective prioritization is essential. LÄS MER

  3. 3. Felling Forests from Afar: Quantifying Deforestation Driven by Agricultural Expansion and International Trade

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Florence Pendrill; [2019]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Forest transitions; Land cover; Carbon footprints; Agriculture; Forestry; Carbon emissions; Land use; International trade; Deforestation;

    Sammanfattning : Deforestation is a major source of human-caused greenhouse gas emissions and the largest threat to terrestrial biodiversity. Most forest loss is due to the expansion of agricultural land use increasingly driven by international demand for food, fuel and fibre. LÄS MER

  4. 4. Regeneration in continuous cover forestry systems

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Charlotta Erefur; Sveriges lantbruksuniversitet.; [2010]
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Sammanfattning : The overall aim of the studies underlying this thesis has been to qualify and quantify the regeneration of tree species in a range of typical growing environments of possible Continuous Cover Forestry (CCF) silvicultural systems in boreal forests of northern Sweden. Data presented in Papers I and II show that the light environment did not differ significantly between points at different distances to trees, but it was clearly affected by the stand stem density (SSD). LÄS MER

  5. 5. Incentives and Forest Reform: Evidence from China

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Yuanyuan Yi; Göteborgs universitet.; Gothenburg University.; [2017]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Forest devolution; Household management; Forest investment; Deforestation; Allocative efficiency; Household welfare; Forestland rental markets; Collective forest tenure reform; Managerial incentives; Environmental protection; State-owned forests; State-owned enterprises; Chinese-style federalism; Two-principal; one-agent model; China;

    Sammanfattning : Chapter I: Forest Devolution Reform in China: A Trigger for Investment or Deforestation? I investigate whether and how the devolution of forestland to households in China triggered investment in forestland, and its effect on forest resource conditions. The investment analysis is based on a panel dataset of a two-round survey of 3,000 households in eight provinces before and after the implementation of the forest devolution reform, while the analysis of resource conditions is based on satellite imagery on forest cover and vegetation during 2001-2012. LÄS MER