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Subprogram A: Integrated Assessment Modelling  
National Strategies for Emission Control and Land Use - a National Platform  
The goal is to develop tools for optimisation of national abatement strategies for nitrogen and acidifying components with the focus on areas where transboundary air pollution and forestry and other land-use practices contribute to environmental effects. The work towards national environmental targets concerning forest soil acidification and nutrient status/productivity requires tools that can be used for identification of potential abatement strategies as well as for scenario analysis and evaluation.

Potential control measures include emission reductions in Europe and adaptation of national land-use including forestry practices. Strategies for sustainable land use including forestry for biofuel production and wood-ash recycling will be examined.

The programme will focus on the interaction between air pollutants and forest management and especially the following two topics:

· Consequences of changed nitrogen budgets in forest soils.

· Acidity and base cation budgets in forest soils and recovery from acidification.

Olle Westling
IVL Swedish Environmental Research Institute
olle.westling@ivl.se