The International Cooperative Programme on Effects of Air Pollution on Natural Vegetation and Crops (ICP Vegetation) is an international research programme investigating the impacts of air pollutants on crops and (semi-)natural vegetation. The programme focuses on the impacts of ozone pollution on vegetation and the atmospheric deposition of heavy metals, nitrogen and persistent organic pollutants (POPs) to vegetation.
In addition, the ICP Vegetation studies impacts of nitrogen pollution on vegetation, takes into consideration impacts of pollutant mixtures (e.g. ozone and nitrogen), consequences for biodiversity and the modifying influence of climate change on the impacts of air pollutants on vegetation. The results of studies conducted by the ICP Vegetation are used in assessments of the current, and predictions of the future, state of the environment. Ca. 50 countries and over 250 scientists participate in the programme.
The programme is led by the UK and has its Programme Coordination Centre at the Centre for Ecology and Hydrology – Bangor. Coordination of the programme is mainly funded by the UK Department for Environment Food and Rural Affairs (Defra).