Ключевые слова: agriculture, background, bark, brown, coniferous, cut, deforestation, energy, energy source, environmental, fire wood, firewood, forestry, fuel, heat, log, logging, logs, lumber, material, natural, nature, pieces, pile, pine, pines, plant, plants, raw, renewable, renewable fuel, resource, rough, split, stacked, sustainability, sustainable, timber, tree, trees, trunk, wood, woodcutting, wooden, woodpile,