Enseignements de la recherche de viviers sur les images Lidar. Documents de la station scientifique des Hautes-Fagnes

Pissart (2010) published a synthetic map locating high "viviers" (fishponds) areas in the Ardennes (Belgium), some of which were identified in the 1950s' on aerial photographs taken by aircraft flying at low altitude; others have been found on Google Earth in the 2000s'. However, be aware that one and the other source is usable for this purpose only in open landscapes. In 2015, the Public Service of Wallonia, via his site "WalOnMap" launches the Lidar mapping. Among other possibilities, this tool allows only restore the relief of the ground (digital field model), regardless of the plant cover (MNT 2013-2014 "Hillshade") . So the question is to estimate what can be the contribution of this new tool in the identification of traces of lithalsas.