ICP Forests Manual
The ICP Forests Monitoring Manual documents the harmonized methods for sampling and analysis as adopted by the participating countries of ICP Forests.
The latest revision of the manual has been carried out in spring 2025. The updated parts of the manual have then been adopted by the Programme Task Force on 19 June 2025. For older versions, please visit the Manual Archive.
Current Manual Version (2025-2026)
- Part I: Objectives, strategy and implementation of ICP ForestsManual Version 2025-2026
- Part II: Basic design principles for the ICP Forests monitoring networksManual Version 2020-2022
- Part III: Quality assurance within the ICP Forests monitoring programmeManual Version 2020-2022
- Part IV: Visual assessment of crown condition and damaging agentsManual Version 2020-2022
- Part V: Tree growth Level IIManual Version 2025-2026
- Part VI: Phenological observationsManual Version 2020-2022
- Part VII.1: Biological diversity - Assessment of ground vegetationManual Version 2020-2022
- Part VII.2: Biological diversity - Assessment of epiphytic lichen diversityManual Version 2016
- Part VIII: Assessment of ozone injuryManual Version 2025-2026
- Part IX: Meteorological measurementsManual Version 2025-2026
- Part X: Sampling and analysis of soilManual Version 2025-2026
- Part X: Sampling and analysis of soil - Annex IManual Version 2025-2026
- Part X: Sampling and analysis of soil - Annex IIManual Version 2025-2026
- Part XI: Soil solution collection and analysisManual Version 2025-2026
- Part XII: Sampling and analysis of needles and leavesManual Version 2020-2022
- Part XIII: Sampling and analysis of litterfallManual Version 2025-2026
- Part XIV: Sampling and analysis of depositionManual Version 2025-2026
- Part XV: Monitoring of air qualityManual Version 2025-2026
- Part XVI: Quality assurance and control in laboratoriesManual Version 2020-2022
- Part XVII: Leaf area measurementsManual Version 2020-2022
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