Ключевые слова: abstract, age, annual, archaeology, background, calendar, chopped, circles, close, contrsuction, cracks, cutted, cycles, date, detail, down, ecology, environment, firewood, gravel, growth, industry, information, layer, life, lines, material, natural, nature, paleoecology, patterns, rings, source, structure, sustainability, texture, textured, timber, time, tree, treerings, trunk, up, width, wood, wooden,