Ключевые слова: biodiversity, blade, branch, chain, chainsaw, chainsaw operation, cut, cutting, damaged tree, deforestation, deforestation prevention, ecological balance, firewood, forest, forest conservation, forest ecosystem, forest health, forest restoration, forest safety, forest sustainability, forest thinning, forest worker, forestry, forestry management, job, logging, lumberjack, old tree, outdoors, sanitary pruning, saw, sawdust, sawing, sustainable forestry, timber, timber production, tree, tree felling, tree maintenance, tree removal, tree risk assessment, tree surgery, trunk, woodcutter, woodcutting, woodland preservation, woodworker safety, work, worker,