A spatio-temporal dataset of forest mensuration for the analysis of tree species structure and diversity in semi-natural mixed floodplain forests

Each Core Area was divided into 10 × 10 m sub-plots, in which all standing trees (individuals with a stem diameter at 1.30 m≥5 cm) were labelled, their species identified, and their position mapped using a total station (an electronic distance measurement instrument for coordinate calculation) and georeferenced in a relative X and Y coordinate system. For each standing tree, the following parameters were re-corded: species, diameter at breast height (1.30 m), total height and vitality (alive tree/dead tree). Standing tree measurements were carried out in three inventories made in winter 1995, 2005 and 2016 and included in the dataset. A total of 5015 trees were included in the dataset.