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April 2008 - April 2012
Publications
Publications (18)
The symbiosis between plants and Ectomycorrhizal fungi (ECM) is shown to considerably influence the carbon (C) and nitrogen (N) fluxes between the soil, rhizosphere, and plants in boreal forest ecosystems. However, ECM are either neglected or presented as an implicit, undynamic term in most ecosystem models, which can potentially reduce the predict...
Ectomycorrhizal fungi (ECM), the symbiosis between a host plant and mycorrhizal fungi, has been shown to considerably influence the C and N flux between soil, the rhizosphere and plant in boreal forest ecosystems. However, ECM is either neglected or presented as an implicit, non-dynamic term in most ecosystem models which can potentially reduce the...
The CoupModel was used to simulate a Norway spruce forest on fertile drained peat over 60 years, from planting in 1951 until 2011, describing abiotic, biotic and greenhouse gas (GHG) emissions (CO2 and N2O). By calibrating the model against tree ring data a “vegetation fitted” model was obtained by which we were able to describe the fluxes and cont...
High Nitrous Oxide (N2O) emissions have been identified in hemiboreal forests in association with draining organic soils. However, the specific controlling factors that regulate the emissions remain unclear. To examine the importance of different factors affecting N2O emissions in a spruce forest on drained organic soil, a process-based model, Coup...
The increasing demand for solid biofuels, such as logging residue fuels, has highlighted the importance of considering that, in contrast to fossil fuels, biofuels are produced in dynamic ecosystems. The environmental effects of changes in management policy, whether positive and negative, are not obvious. For example, calculations of the carbon budg...
Leaf area index (LAI) and canopy coverage are important parameters when modelling snow process in coniferous forests, controlling interception and transmitting radiation. Estimates of LAI and sky view factor show large variability depending on the estimation method used, and it is not clear how this is reflected in the calculated snow processes ben...
In this chapter, four examples of scientific questions and challenges in which process-oriented modelling could provide a useful contribution for accounting soil organic carbon (SOC) stocks and changes are presented. These challenges include cases i) when measurements are either time-consuming and/or expensive or there are methodological limitation...
This study quantified major fluxes of carbon (C), heat and water, including uncertainty estimates, in a boreal forest in northern Sweden, using a process-based model (CoupModel) and Bayesian calibration methodology. Coupled C, water and heat fluxes were described together with estimated uncertainties for all major components of the simulated C budg...
The change of current pools of soil C in Norway spruce ecosystems in Sweden were studied using a process-based model (CoupModel).
Simulations were conducted for four sites representing different regions covering most of the forested area in Sweden and
representing annual mean temperatures from 0.7°C to 7.1°C. The development of both tree layer and...
This paper presents an integrated analysis of organic carbon (C) pools in soils and vegetation, within-ecosystem fluxes and
net ecosystem exchange (NEE) in three 40-year old Norway spruce stands along a north-south climatic gradient in Sweden, measured
2001–2004. A process-orientated ecosystem model (CoupModel), previously parameterised on a region...
A simulation study based on recent regional climate scenarios for Sweden investigated possible changes in carbon (C) dynamics
and net ecosystem exchange (NEE) of Swedish Norway spruce forest ecosystems. Four sites, representative of well-drained soils
in four regions, were included. Stand development was simulated for a 100-year rotation period usi...
Institutionen för Ekologi, Miljö och Geovetenskap, Umeå Universitet, 3 Sustainum AB, Umeå, 4 HGC AB, Stockholm, 5 Institutionen för Mark-och Vattenteknik, KTH, Stockholm, 6 Institutionen för Mark och Miljö, Sveriges Lantbruksuniversitet Uppsala, 7 Institutionen för Ekologi, Sveriges Lantbruksuniversitet Uppsala, 8 Institutionen för Skogens Ekologi...
FOI är en huvudsakligen uppdragsfinansierad myndighet under Försvarsdepartementet. Kärnverksamheten är forskning, metod-och teknikutveckling till nytta för försvar och säkerhet. Organisationen har cirka 1000 anställda varav ungefär 800 är forskare. Detta gör organisationen till Sveriges största forskningsinstitut. FOI ger kunderna tillgång till led...
