Welcome to ICP Forests

A programme aiming at a comprehensive compilation of information on the condition of forests in Europe and beyond

The International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) was launched 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 forest condition at two monitoring intensity levels:

The Level I monitoring is based on 5624 observation plots (as at 2021) on a systematic transnational grid of 16 x 16 km throughout Europe and beyond to gain insight into the geographic and temporal variations in forest condition.

The Level II intensive monitoring comprises 561 plots (as at 2020) in selected forest ecosystems with the aim to clarify cause-effect relationships.

At present 42 countries in Europe and beyond participate in ICP Forests. All data are available upon request.

Blog Posts

11th ICP Forests Soil Interlaboratory Comparison (Ring Test)

The Working Group on QA/QC in Laboratories gladly invites all laboratories to participate in the 11th ICP Forests Soil Interlaboratory Comparison (Ring Test) in order to assess the quality of the soil analytical results performed on the samples collected in ICP Forests as part of the systematic (Level I) or the intensive monitoring (Level II).


More information on the soil ringtest program:

Posted by Alexa Michel on February 1, 2024 at 7:30

Happy holidays & best wishes for the new year

The ICP Forests Chairman and the Programme Co-ordinating Centre wish you and your families

a peaceful and relaxing holiday season and a happy and healthy new year 2024.

Once again, we would like to express our sincere gratitude to all those involved in ICP Forests and especially the participating countries for their continued commitment and co-operation in monitoring forest ecosystems across the UNECE region.

Posted by Alexa Michel on December 20, 2023 at 11:30

ICP Forests 2023 Technical Report available online

The PCC is pleased to announce the online publication of the ICP Forests 2023 Technical Report: Forest Condition in Europe - The 2023 Assessment and its online supplement. It can be downloaded here; printed copies will be available soon.

Posted by Alexa Michel on December 18, 2023 at 10:00

11th FORECOMON and 40th ICP Forests Task Force Meeting, Prague, 10-14 June 2024


We are happy to announce the date of the 11th Forest Ecosystem Monitoring Conference - FORECOMON 2024 - and the 40th ICP Forests Task Force Meeting. Both will be held in Prague, Czechia, from June 10 to June 14, 2024 and hosted by the Forestry and Game Management Research Institute (FGMRI) and the Czech Ministry of Agriculture. We hope to see you there.

Registration: https://forecomon2024.thuenen.de/registration

Abstract submission: https://forecomon2024.thuenen.de/abstract-submission

Deadline for abstract submission: 31 Jan…


Posted by Alexa Michel on October 20, 2023 at 11:00

ICP Forests Chairman Marco Ferretti receives Victor Girugiu Award from INCDS

At the international scientific conference “Forest science for people and societal challenges - The 90th "Marin Drăcea" INCDS Anniversary", Bucharest, Romania, 2-5 Oct 2023, ICP Forests Chairman Marco Ferretti was offered the “Victor Giurgiu” award for forest biometrics, management planning and environmental protection. He received the award from the General Director Mr. Serban Davidescu (left) and from the Scientifc Director Mr. Ovidiu Badea (right) from the "Marin Drăcea" National Institute for Research and Development in Forestry (INCDS).

Posted by Alexa Michel on October 12, 2023 at 14:00

FORECOMON 2023 - The 10th Forest Ecosystem Monitoring Conference is coming up

This year's Scientific Conference of ICP Forests is coming up: 6th June 2023, 13:00 - 16:30.

The programme includes 11 presentations devided in two sessions:

  • Session 1 - Forest monitoring in the Anthropocene - the results
  • Session 2 - Forest monitoring in the Anthropocene – new approaches and perspectives

For further details and participation link visit the conference website: forecomon2023.thuenen.de

Posted by Anne-Katrin Prescher on May 11, 2023 at 13:30


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