“…The lower the EF value is, the more environmentally friendly the industrial processes or population’s consumption in the area will be. In the evaluation of the EF six main ecological land-use categories are considered, i.e ., forest land, fishing ground, arable land, built-up land, grazing land and land used for energy production [5,6,7,8,9,10,11,12,13,14,15]. Currently, aside from general EF, specific EF for individual factors influencing ecosystems are becoming more popular.…”