“…Diameter at Breast Height (DBH)), species, number of trees per ha, cutting technique/ experience of operators, felling type (clear cut, systematic, selective thinning), felling intensity, stand type (evenly-aged high forest, coppice, etc. ), weather conditions and distance between trees can impact on the productivity of motor-manual felling (Sobhani, 1984;Peterson, 1987;Food and Agriculture Organization (FAO), 1998;Hartsough et al, 2001;Kleunder, Stokes, 1996;Wang et al, 2004;Ghaffariyan, Sobhani, 2007;Magagnotti et al, 2012;Balimunsi et al, 2011;Balimunsi et al, 2012;Borz, Ciobanu, 2013;Ignea et al, 2017;Acosta et al, 2018). It should be noted that felling is one of the riskiest components of harvesting operations.…”