The International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) was established in 1985 under the Convention on Long-range Transboundary Air Pollution (Air Convention, formerly CLRTAP) of the United Nations Economic Commission for Europe (UNECE).
ICP Forests monitors the influence of air pollutants, climate change and other stressors on the condition of forest ecosystems at two levels of monitoring intensity. The Level I monitoring is based on around 6,000 observation plots on a systematic 16 x 16 km transnational grid across Europe and beyond to provide insight into the geographical and temporal variation of forest condition. The Level IIintensive monitoring comprises over 600 plots in selected forest ecosystems with the aim of clarifying cause-effect relationships.
Currently, 40 European countries as well as the USA and Canada are members of the ICP Forests.
- 42
paticipating countries
- 2
intensity levels
of monitoring
- Over 6,000
forest monitoring plots
- 40 years
since its foundation
FORECOMON 2026 of ICP Forests took place from 4 - 6 May 2026 in conjunction with the 42nd Task Forece Meeting of ICP Forests. It was a great success with more than 100 participants from 26 countries. Thank you very much also to all presenters!
We would like to heartly thank the Croatian Forest Research Institute for hosting this great event. Our special thanks go toTamara Jakovljević, Nenad Potocic and Sanja Perić.
ICP Forests plots
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