%0 Research article
%T Time consumption analysis of the mechanized cut-to-length harvesting system
%A Nurminen, Tuomo
%A Korpunen, Heikki
%A Uusitalo, Jori
%D 2006
%J Silva Fennica
%V 40
%N 2
%R doi:10.14214/sf.346
%U https://silvafennica.fi/article/346
%X The time consumption and productivity of harvesting are dependent on  stand conditions, the operators’ skills, working techniques and the  characteristics of the forestry machinery. Even if the basic methods and  machine types of the cut-to-length harvesting system have not changed  significantly in 10 to 15 years, improvements in the operators’  competence, technical solutions in forest machinery and changes in the  working environment have undoubtedly taken place. In this study, the  objective was to discover the special characteristics in the time  consumption of mechanized cutting and forest haulage in Finnish  conditions. The empirical time study was conducted with professional  operators and medium-sized single-grip harvesters and forwarders in  final fellings and thinnings in easy terrain in central Finland. The  models for effective time consumption in the work phases and total  productivity were formed. Stem size, tree species and bucking affected  the cutting, whereas timber density on the strip road, the average  driving distance, load capacity, wood assortment and the bunching result  of the harvester operator had an effect on the forest haulage  performance. The results may be used in simulations, cost calculations  and education.