1 Centre for Environmental Research and Impact Studies, University of Bucharest, Nicolae Balcescu 1, 010041, Bucharest, Romania.
2 Centre for Environmental Research and Impact Studies, University of Bucharest, Nicolae Balcescu 1, 010041, Bucharest, Romania. cristian.ioja@geo.unibuc.ro.
3 Department of Urban Studies and Planning, Massachusetts, Institute of Technology, Massachusetts Avenue 77, Cambridge, MA, 02139, USA.
4 Swiss Federal Research Institute of Forest, Snow and Landscape, Landscape Dynamics, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland.