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 5663 observation plots (as at 2020) 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 633 plots (as at 2019) in selected forest ecosystems with the aim to clarify cause-effect relationships.

At present 42 countries in Europe and beyond participate in ICP Forests.

Blog Posts

New videos on the effects of nitrogen on forests available in French, German, and Italian

The Swiss Federal Office for the Environment FOEN has published a new video on the effects of nitrogen deposition on Swiss forests. It is a beautifully designed educational video aimed at the general public.

The video is available on YouTube in three languages so far:
French, German, Italian

Posted by Alexa Michel on June 15, 2022 at 12:30 — 1 Comment

New e-learning course on the UNECE Air Convention

There is a new self-paced online course that aims to raise awareness about air pollution and its effects, ways to prevent and reduce harmful emissions and the Convention and its protocols as an international framework for co-operation on cleaner air.

The course features four distinct modules that aim to equip learners with the knowledge and resource materials to understand the main concepts in air pollution management, the basic principles of the Convention and Parties’ obligations under the Convention and its protocols.

This e-course was made available on UN CC:e-Learn through the new UN CC:Learn affiliation programme: e-learning course…


Posted by Alexa Michel on June 14, 2022 at 13:25

Establishment of new Ad hoc Working Group on Tree Physiology

The new Ad Hoc Working Group on Tree Physiology within the EP Crown Condition and Damage Causes is still looking for experts in forest ecophysiology.

For more information, please have a  look at their call or contact Filippo Bussotti (filippo.bussotti@unifi.it) and Martina Pollastrini (martina.pollastrini@unifi.it) directly.

Posted by Alexa Michel on June 14, 2022 at 12:16

38th Task Force Meeting of ICP Forests successfully held online

The 38th Task Force Meeting was held online with 93 participants from 28 countries, including presenters from other bodies under the Convention and external guests.

Thank you again to all participants for making this meeting a success and we hope to see you again in person at the 39th TFM in Helsinki next year!

With best wishes
Alexa Michel
on behalf of the Programme Co-ordinating Centre of ICP Forests

Posted by Alexa Michel on June 10, 2022 at 16:00


Soil spectroscopy

Dear colleagues,as topicality is rising on application of soil spectroscopy for routine analysis by utilizing own created or shared spectral libraries, I am interested if someone could share their knowledge on instrumentation choice? Could someone…Continue

Started by Aldis Butlers Dec 19, 2019.

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 two mills in our lab. One of them is Retsch ZM200…Continue

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


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