543
vegetation, and reed vegetation on open plaur (floating vegetation called plaur
(floating reed bed) is an association of reeds and other wetland plants that grow on
a one- meter thick cover made up of roots, soil and various organic materials) and
two classes of reed vegetation on compact plaur (one class with cut reeds).
The classification accuracy of the Sentinel-2 image (Fig. 17.15) was estimated to
be 87.5%, which was inferior to that of the time series from the radar data provided
by Sentinel-1. The Sentinel-1 images time series classifications (95.7% mean accuracy) display very good accuracy.
The classification precision analysis per class proves that the Sentinel-2 images
allow the identification of all ten classes of vegetation considered in this study. The
following classes exhibit satisfactory accuracy for some of the restoring areas: reed
Fig. 17.15 Random Forest classification in ten classes vegetation: Optical image Sentinel-2.5
classes of reed vegetation with some confusion between these classes. The restored areas: (a)
Babina-Cernovca; (b) Popina; (c) Dranov-Holbina
17 Alteration and Remediation of Coastal Wetland Ecosystems in the Danube Delta…