Wroclaw University of Environmental and Life Sciences, Faculty of Environmental Engineering and Geodesy, Department of Spatial Management, Grunwaldzka 55 Street, 50-357 Wroclaw, Poland Adam Mickiewicz University, Faculty of Geographical and Geological Science, Institute of Socio-Economic Geography and Spatial Management, Department of Spatial Econometrics, Dzięgielowa 27 Street, 61-680 Poznan, Poland;