Sökning: "CoupModel"

Visar resultat 1 - 5 av 14 avhandlingar innehållade ordet CoupModel.

  1. 1. Land use GHG emissions and mitigation options, simulated by CoupModel

    Författare :Hongxing He; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; GHG; CO2; N2O; forest; drained peatland; clay soil; willow; soil nitrate leaching; modeling; CoupModel; GLUE; Land use; mitigation option; cost benefit analysis;

    Sammanfattning : Climate change and greenhouse gas (GHG) emissions are one of the major challenges to the humankind of 21st Century. This thesis focuses on understanding, estimating and suggesting mitigation of the GHG emissions (mainly N2O and CO2) from the land use sector, specifically from forest ecosystems on drained peatlands but also from willow production on agricultural clay soil. LÄS MER

  3. 2. Modelling soil temperature and carbon storage changes for Swedish boreal forests

    Författare :Magnus Svensson; KTH; []
    Nyckelord :SPAC; soil surface energy balance; Norway spruce; canopy; LAI; climate; nitrogen; CoupModel;

    Sammanfattning : With the use of a process-orientated ecosystem model andmeasurements conducted at different Swedish coniferous forestsites, abiotic and biotic interactions between tree and soilwere identified and related to governing factors. Two differentmodelling approaches to describe soil temperatures at two sitesincluding hydrological transects were tested (I). LÄS MER

  4. 3. Soil Management Strategies to Establish Vegetation and Groundwater Recharge when Restoring Gravel Pits

    Författare :Karin Palmqvist Larsson; KTH; []
    Nyckelord :groundwater protection; soil physical properties; CoupModel; unsaturated conductivity; water retention; transpiration; soil evaporation;

    Sammanfattning : The removal of vegetation and overburden changes the naturalwater purifying processes and thus decreases the groundwaterprotection in gravel pit areas. The sand and gravel depositsusedfor aggregate extraction in Sweden are also often valuablefor extraction of groundwater as a drinking water resource. LÄS MER

  5. 4. Modeling the Seasonality of Carbon, Evapotranspiration and Heat Processes for Cold Climate Conditions

    Författare :Sihong Wu; Per-Erik Jansson; Andreas Ibröm; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; net ecosystem exchange NEE ; sensible and latent heat fluxes; photosynthesis; respiration; nitrogen turnover; Scots pine forest; bare soil; cold climate; soil physical characteristics; CoupModel; GLUE; Other civil engineering and architecture; Övrig samhällsbyggnadsteknik och arkitektur;

    Sammanfattning : The productivity of agricultural and forest ecosystems in regions at higher latitudes is to a large extent governed by low temperature and moisture conditions. Environmental conditions are acting both above- and below-ground and regulating carbon fluxes and evapotranspiration. LÄS MER

  7. 5. Carbon dynamics in spruce forest ecosystems - modelling pools and trends for Swedish conditions

    Författare :Magnus Svensson; Per-Erik Jansson; Dan Berggren Kleja; Keith Paustian; KTH; []
    Nyckelord :boreal; climate; CoupModel; net ecosystem production; nitrogen; process-based model; soil carbon; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : Carbon (C) pools and fluxes in northern hemisphere forest ecosystems are attracting increasing attention concerning predicted climate change. This thesis studied C fluxes, particularly soil C dynamics, in spruce forest ecosystems in relation to interactions between physical/biological processes using a process-based ecosystem model (CoupModel) with data for Swedish conditions. LÄS MER