Office

Daniela Hohenstern
Institute of Forest Ecosystems

Alfred-Möller-Straße 1, Haus 41/42
16225 Eberswalde
Phone: +49 3334 3820 300
Fax: +49 3334 3820 354
wo@thuenen.de

Contact persons for



Programme Co-ordinating Centre (PCC) of ICP Forests

Project

 (c) Tanja Sanders

In the 1980s a deterioration of crown condition of forest trees was observed. As air-borne SO2 was taken as the main causal agent, the International Co-operation Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) was launched.

Background and Objective

In the 1980s a continuous deterioration of crown condition of several forest tree species – especially silver fir – was observed. As air pollution – mainly sulphur dioxide – was taken as the main causal agent, an international initiative – ICP Forests – was launched in 1985 under the umbrella of the UNECE Convention on Long-range Transboundary Air Pollution (CLRTAP) in order to observe and evaluate forest tree crown condition.

The early crown condition assessments, later called the Level I monitoring, were soon supplemented with data on the soil solid phase and foliar element content. A more intensive (Level II) monitoring was established in 1995 with the aim to gain a more thorough understanding of cause-effect relationships in forests. The Level II monitoring includes – partly in high temporal resolution – the collection of data on deposition, soil solution, weather condition, air quality, ground vegetation, tree increment, phenology, litterfall, and visible ozone injuries.

The Programme Co-ordinating Centre (PCC) of ICP Forests is responsible for the programme administration and organization, and the data management. The PCC also edits the extensive ICP Forests Manual and publishes scientific papers and brochures for policy consultancy and the general public.

Approach

Within the Level I monitoring, crown condition is assessed annually by the ICP Forests member states on a 16 by 16 km grid (in total around 6,000 plots). The same grid is used for assessments of the soil and foliar condition, which are conducted every 10 to 15 years. The Level II sites (in total around 600 plots) can be regarded as case studies. The respective data are measured or collected continuously or in more or less extended intervals. In order to achieve maximal comparability, all data collections follow the internationally adopted ICP Forests Manual. After several quality checks, the data are fed to the ICP Forests database which is managed by the PCC. These data can then be disseminated to external and internal data applicants according to the ICP Forests data policy, which has been adopted by all 42 ICP Forests member states. Standard evaluations are also performed by the PCC along with participations in more advanced studies undertaken by different scientists from partner organizations across Europe.

Links and Downloads

icp-forests.net

Thünen-Contact


Involved Thünen-Partners


Duration

Permanent task 10.2013

More Information

Projekt type:
Project status: ongoing

Publications

Results 1 - 5 of 65

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  1. Michel AK, Kirchner T, Prescher A-K, Schwärzel K (eds) (2021) Forest Condition in Europe : The 2021 Assessment ; ICP Forests Technical Report under the UNECE Convention on Long-range Transboundary Air Pollution (Air Convention). Eberswalde: Thünen Institute of Forest Ecosystems, 103 p, ICP For Techn Rep 2021, DOI:10.3220/ICPTR1624952851000
    pdf document (limited accessibility) 13271 kb
  2. Potocic N, Timmermann V, Ognjenovic M, Kirchner T, Prescher A-K, Ferretti M (2021) Tree health is deteriorating in the European forests. Eberswalde: Thünen Institute of Forest Ecosystems, 4 p, ICP Forests Brief 5/2021, DOI:10.3220/ICP1638780772000
    pdf document (limited accessibility) 5845 kb
  3. Nicolas M, Michel AK (2020) Addressing challenges associated with long-term forest ecosystem monitoring. ICP For Techn Rep 2020:49-52
    pdf document (limited accessibility) 3999 kb
  4. Ferretti M, Waldner P, Verstraeten A, Schmitz A, Michel AK, Zlindra D, Marchetto A, Hansen K, Pitar D, Gottardini E, Calatayud V, Haeni M, Schaub M, Kirchner T, Hiederer R, Potocic N, Timmermann V, Ognjenovic M, Schuck A, Held A, et al (2020) Criterion 2: Maintenance of forest ecosystem health and vitality. In: State of Europe’s forests 2020. Forest Europe, pp 52-86
  5. Michel AK, Prescher A-K, Schwärzel K (eds) (2020) Forest Condition in Europe : The 2020 Assessment ; ICP Forests Technical Report under the UNECE Convention on Long-range Transboundary Air Pollution (Air Convention). Eberswalde: Thünen Institute of Forest Ecosystems, 98 p, ICP For Techn Rep 2020, DOI:10.3220/ICPTR1606916913000
    pdf document (limited accessibility) 10408 kb

Results 1 - 5 of 65

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