Parisa Rafiaani (Centre for Environmental Sciences, Hasselt University, Belgium/Economics and Rural Development, Gembloux Agro-Bio Tech, University of Liège, Belgium), Steven Van Passel (Centre for Environmental Sciences, Hasselt University, Belgium/Department of Engineering Management, Antwerp University, Belgium), Philippe Lebailly (Economics and Rural Development, Gembloux Agro-Bio Tech, University of Liège, Belgium), Tom Kuppens (Centre for Environmental Sciences, Hasselt University), Hossein Azadi (Centre for Environmental Sciences, Hasselt University, Belgium/Economics and Rural Development, Gembloux Agro-Bio Tech, University of Liège, Belgium/Department of Geography, Ghent University, Belgium)