1. Lab of Remote Sensing and GIS; Faculty of Agriculture; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
2. Division of Hydraulics and Environmental Engineering; Department of Civil Engineering; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece
3. Interbalkan Environment Centre; 18 Loutron street Langadas 57200 Greece
4. Lab of Applied Soil Science; Faculty of Agriculture; Aristotle University of Thessaloniki; Thessaloniki 54124 Greece