Ключевые слова: alternative, arboriculture, background, blade, business, chain, chain saw, chipping, chop, chopping, commodity, construction, cut, cutting, deforestation, ecology, energy, engine, environment, equipment, felling, filling, finland, firewood, forest, forestry, france, harvester, harvesting, industrial, industry, log, logging, machine, machinery, meuse, natural, nature, pine, saw, technology, timber, timbering, tree, truck, trunk, wood, work,