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Forest simulation models in Estonia Henn Korjus, Andres Kiviste

COST ACTION FP0603: Forest models for research and decision support in sustainable forest management. Forest simulation models in Estonia Henn Korjus, Andres Kiviste. 1st Workshop and Management Committee Meeting. Institute of Silviculture, BOKU. 8-9 of May 2008 Vienna, Austria.

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Forest simulation models in Estonia Henn Korjus, Andres Kiviste

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  1. COST ACTION FP0603: Forest models for research and decision support in sustainable forest management Forest simulation models in Estonia Henn Korjus, Andres Kiviste 1st Workshop and Management Committee Meeting.Institute of Silviculture, BOKU.8-9 of May 2008Vienna, Austria

  2. Estonian forests • Forest cover (total/share): • 2.26 mill. ha/ 52 % of land (without the area of Lake Peipsi) • Growing stock, annual growth and cuts: • 455 mill. m3, 12 mill. m3 y-1, • cuttings 5.1 mill . m3in 2005 (6.9-7.8 mill. m3 y-1in 1999-2004) • Main species: • mostly mixed forests • dominated by Scots pine (33%), silver birch (31%), Norway spruce(17%), aspen (5%), alders (12%) • Main non-wood products and services: • biodiversity • hunting, recreation • berries and mushrooms • Main risks: • wind, flooding, fires • pests and diseases • changes in management level • Management and silvicultural characteristics: • Plenty of unmanaged forests– due to forest policy decisions

  3. Forest modelling approaches and trends Empirical models • Stand-level modellinguntil now, individual tree-level modelling in future also. • Tree level models do not exist yet. • Recent research is concentrating in: • Modelling structural properties of a stand • Modelling mortality and survival probability • Modelling biodiversity dynamics • Developing information systems of models, growth tables and available empirical data • Different long-term forest experiments as a source for growth modelling data • Summarizing local growth and yield tables and models from 23 countries in Europe (more than 1100 tables and models) into more generalised meaningful model

  4. Forest modelling approaches and trends Mechanistic models • Data is collected from the network of permanent sample plots (appr. 700 stem-mapped plots with third round of measurements) • Models are under construction

  5. Modelling non-timber products and services • Data is collected on naturalness and biodiversity values of forests on sample plots. • Individual tree mortality and it’s causes have been assessed since 2006. • Some researchers are studying specific aspects of non-timber use of forests, with no modelling preference. • No models have been developed yet.

  6. Simulators and information systems http://formis.eau.ee – forest modelling information system

  7. Future challenges • Individual tree-level modelling • Scenario modelling • Modelling forest growth under changing conditions • Risk assessment • Mortality • Stand structure • Biodiversity aspects

  8. Innovative references

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