The data used consisted of SPOT XS images acquired on 11 May 1986 and 19 June 1997,
Landsat ETM image of 2008, and JERS-1 SAR intensity image of April 1997 and ERS-1/2 SAR
tandem pass single look complex (SLC) images acquired on 10 and 11 October 1997,
respectively. In addition, a topographic map of 1969, scale 1:50.000 and a forest taxonomy map
(made by the combined use of an aerial photograph of 1963 and ground survey of 1988), scale
1:100.000 were available, accordingly.