Welcome to ICP Forests

– 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 (CLRTAP) –

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

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) in response to wide public and political concern over extensive forest damage that had been observed in Europe in the beginning of the 1980s. ICP Forests monitors forest condition in Europe at two monitoring intensity levels: The Level I monitoring is based on around 6000 observation plots 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 while the Level II intensive monitoring comprises around 500 plots in selected forest ecosystems with the aim to clarify cause-effect relationships. At present 42 countries participate in ICP Forests.

Blog Posts

Dr Kai Schwärzel new Head of the Programme Co-ordinating Centre of ICP Forests

We are very pleased to announce that Dr Kai Schwärzel will soon act as the new Head of the Programme Co-ordinating Centre of ICP Forests under the UNECE Air Convention.

Kai is a senior expert of soil science and forest hydrology. Over the last six years, Kai served as the head of the Soil and Land-use Management unit at the Dresden based Institute for Integrated Management of Material Fluxes and of Resources (UNU-Flores), which is part of the United Nations University network. Kai is very experienced in the application, establishment, and coordination of research programmes, and he is very pleased to offer his expertise and experience in order to coordinate and further develop the forest monitoring under ICP Forests.

We are very happy that he will be joining our team and look forward to working with him.



Posted by Alexa Michel on March 13, 2019 at 11:39

International Cross-Comparison Course Crown Condition (Central and Northern Europe), Chorin, Germany, 3-6 June 2019

The 1st Announcement of the International Cross-Comparison Course Crown Condition with detailed information on this meeting has been published. More information on the ICP Forests website.

Best wishes
Alexa Michel, Programme Co-ordinating Centre of ICP Forests

Posted by Alexa Michel on February 19, 2019 at 14:15

XXV IUFRO World Congress - Deadline extension until 10 January 2019

Dear colleagues,

The deadline for abstract submission to the XXV IUFRO World Congress has been extended to 10 January 2019.

Once again, we would like to advertise session B4g on Long-Term Forest Monitoring Networks for Evaluating Responses to Environmental Change.

The session aims to attract scientists, managers and stakeholders who are keen to understand large-scale, long-term effects of rapidly changing environmental drivers on forest ecosystems, to advance forest monitoring systems from local to global scale. The session offers the opportunity to present latest research findings, address methodological issues, and outline solutions based on the comprehensive data series from long-term forest monitoring networks world-wide, such as ICP Forests, EANET, ICOS, ILTER, AnaEE, ENFIN, TERN and others.

Congress registration and abstract submission at:…


Posted by Alexa Michel on December 21, 2018 at 17:50

Season's Greetings

Dear members of the ICP Forests website community,

The Chairman of ICP Forests and the team at the Programme Co-ordinating Centre wish you happy holidays and a peaceful and healthy new year 2019!

Marco Ferretti, Chairman of ICP Forests
Till Kirchner, Alexa Michel, Anne-Katrin Prescher, Ralph Ryl, Programme Co-ordinating Centre of ICP Forests

Posted by Alexa Michel on December 17, 2018 at 11:10

ICP Forests 2018 Executive Report now available online

We are pleased to announce the online publication of the ICP Forests 2018 Executive Report on long-term monitoring of forest ecosystem compartments, organism responses to environmental stress, and modelling environmental stress in forest ecosystems.

You can download this report from the ICP Forests website. Printed copies will be available soon.

With best wishes for the holiday season
Alexa Michel, Programme Co-ordinating Centre of ICP Forests

Posted by Alexa Michel on December 14, 2018 at 11:40

Registration open for next Combined EP Meeting in Brussels, Belgium, 25-29 March 2019

All members of the Expert Panels on Crown Condition and Damage Causes, Soil & Soil Solution, Foliage & Litterfall, Deposition, and QA/QC in the Labs can now register for the next Combined EP Meeting in Brussels on the website of this meeting; registration closes on 1 March 2019.

Best wishes
Alexa Michel, Programme Co-ordinating Centre of ICP Forests

Posted by Alexa Michel on December 13, 2018 at 13:30


Choosing brands for some instruments 1 Reply

Dear colleagues,It is planned to purchase a new mill, Kjeldahl Steam Distillation System for N analysis and combined system to analyze pH, EC and alkalinity for water samples for my lab. 1. There are…Continue

Started by Rabia GUNHAN. Last reply by Robert Menegotto Apr 30, 2018.

What is the Integrated Pest Management (IPM) or Integrated Pest Control (IPC), what is its role in protecting our Environment?

I would like to ask on IPM and how benefits us in protecting the environment?Continue

Started by Mohamed Dadamouny Dec 19, 2016.

Upcoming workshop: Environmental change and forest ectomycorrhizal fungi. 8-9 October 2015

Dear all,I would like to announce that we will organise a workshop on 8-9 October 2015 at the Royal Botanic Gardens Kew in London, with the topic environmental change and forest ectomycorrhizal…Continue

Started by Sietse van der linde Mar 30, 2015.

Soil Sample Laboratory Test 1 Reply

I would like to know about Soil Sample Laboratory Test, are we going to have it in 2014 year. Best regards, Radovan Nevenic, NFC Serbia.Continue

Started by Radovan Nevenic. Last reply by Nathalie Cools May 7, 2014.


Latest Activity

Ivan Limic is now a member of ICP Forests
Profile IconAneliya Raykova and Ylli Hoxha joined ICP Forests
May 14
Alexa Michel updated an event

35th Task Force Meeting of ICP Forests, Ankara, Turkey at Ankara / Turkey

June 13, 2019 to June 14, 2019
The Task Force Meeting of ICP Forests is the annual steering assembly of ICP Forests with representatives of all participating countries.Preliminary agenda2019 Task Force Meeting…See More
May 13
Alexa Michel updated an event

8th ICP Forests Scientific Conference, Ankara, Turkey at Ankara, Turkey

June 11, 2019 to June 12, 2019
The scope of the 8th ICP Forests Scientific Conference is inspired by the recent drought and other extreme events occurring across Europe in 2018.With “Trends and events - Drought, extreme climate and air pollution in European forests” we aim to promote the extensive ICP Forests data series to combine novel modeling and assessment approaches and integrate long-term trends with extreme weather events across European forests.…See More
May 13
Alexa Michel posted events
May 8
Elena Gottardini replied to Héctor García Gómez's discussion Greetings in the group Dry deposition
"Dear Héctor, thank you for starting this discussion group. I would like sharing with you a topic signaled by Peter Waldner to Arne Verstraeten, and by him to me: "Microplastic in deposition". Please find attached two related…"
May 6
Katrin Meusburger Di Bella posted a group

Sentinel-2 imagery meets Level I survey data

Indicators of forest health such as defoliation can be observed and monitored in the field like it is done at Level I monitoring plots and via vegetation indices and their deviation from normality. The aim is to intersect crown condition data with Sentinel-2 vegetation indices to allow for a spatiotemporal discretisation of this proxy for forest health. See More
May 6
2 discussions started by Héctor García Gómez were featured
May 3

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