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The development of methods for identifying long-term land cover changes is important for many research domains that focus on environmental changes. Analyses of changes in forest vegetation cover are of particular relevance. The interpretation potential of results increases when, in addition to changes in an area occupied by forest cover, we are also able to identify the variability of the area’s height over time. The paper presents a method for precise assessment of changes in forest cover and height over several decades in forests and areas affected by agricultural land abandonment. The data was sourced from two point clouds: one set was collected using airborne laser scanning and represents the current state; the other was obtained from processed monochromatic stereometric aerial images and represents the historical state.

The study involved a dataset made up of nine test fields of 1.3 km² each. The data …