Maps

Every year, maps are produced based on the latest data from the ICP Forests member states. The maps are published in the Technical Reports.

A selection of such figures is shown below.

2025

Mean plot defoliation of all species in 2025 in a map of Europe. — Mean plot defoliation of all species in 2025, shown as defoliation classes. The legend (top left) shows defoliation classes ranging from none (blue), slight (green), moderate (orange and red), to severe (black) defoliation. The percentages refer to the needle/leaf loss in the crown compared to a reference tree. The pie chart (top right) shows the percentage of plots per defoliation class. Dead trees are not included. // yet to be published in Technical Report 2026

2024

Throughfall deposition of the sum of inorganic and organic nitrogen measured in 2024 on the ICP Forests Level II plots and the Swedish Throughfall Monitoring Network on a map of Europa. — Throughfall deposition of the sum of inorganic and organic nitrogen measured in 2024 on the ICP Forests Level II plots and the Swedish Throughfall Monitoring Network. // yet to be published in the Technical Report 2026

Throughfall deposition of nitrate-nitrogen measured in 2024 on a map of Europa — Throughfall deposition of nitrate-nitrogen measured in 2024 on the ICP Forests Level II plots and the Swedish Throughfall Monitoring Network // yet to be published in the Technical Report 2026

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