23rd Task Force Meeting of the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests – 16 May 2007, Zvolen, Slovakia the International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests operating under the UNECE Convention on Long-range Transboundary Air Pollution.

A programme tailored for comprehensive information on forest condition in Europe ICP Forests was launched in 1985 under the Convention on Long-range Transboundary Air Pollution of the United Nations Economic Commission for Europe (UNECE) due to the growing public awareness of possible adverse effects of air pollution on forests. ICP Forests monitors the forest condition in Europe, in cooperation with the European Union using two different monitoring intensity levels.
The first grid (called Level I) is based on around 6000 observation plots on a systematic transnational grid of 16 x 16 km throughout Europe. The intensive monitoring level comprises around 800 Level II plots in selected forest ecosystems in Europe. Currently 41 countries participate in the ICP Forests.
September 15,  2007   Hungary, Eger Meeting of the ICP Forests Expert Panel Deposition