Ключевые слова: agriculture, background, biomass, branch, closeup, concept, cross section, cutting, deforestation, environment, fallen tree, firewood, forest, forestry industry, fuel and power generation, green, hardwood, heap, industry, leaf, log, lumber, lumberyard, material, natural, nature, outdoors, pile, pine, pine wood, plant, renewable energy, rural scene, sawing, sawmill, social issues, stack, sun rays, sunbeam, sustainable resources, timber, tree, trunk, underbrush, undergrowth, wood, wooden, woodland, woodpile,