Process mechanization models for improved Eucalyptus plantation management in Southern China based on the analysis of currently applied semi-mechanized harvesting operations

The clear cut operations are characterized by basic manual work, except motor-manual work for tree felling and cross-cutting. The overall time consumption for harvesting and extraction was 115.07 min m⁻³, respectively the productivity was 0.58 m³ h⁻1. Manual hauling of the logs was identified as the most time consuming activity. Therefore, priority should be given to extraction activities when trying to improve productivity and work safety through mechanization.