Ключевые слова: azure, bionomics, blue, central asia, china, desert, diversifolia populus, ecologist, ecology, falling leaves, gold, golden, grit, haloxylon, heaven, jordan, landscape, nature, north africa, ornamental tree, palate, paysage, populus, populus euphratica, prairie, sahara, sand, sands, sheet, sky, sphere, steppe, tree, trees, veld, veldt, welkin, wilderness, wood,