2, the basic explanation: deciduous trees, white bark, as thin as paper, delicate wood, can be used as furniture.
3, birch deciduous trees, trunk up to 25 meters, 50 cm thick. There are white smooth paper bark, which can be peeled off layer by layer, and you can write on the thin bark with a pencil. The leaves of Betula platyphylla are simple and alternate, with serrated edges. The flowers are monoecious, and the male inflorescence is soft and drooping. In spring, the leaves on the trees bloom before they grow. Birch fruit is flat and small, called samara, which is easily blown up by the wind and floated far away.
4. Birch likes sunshine and has strong vitality. After the forest is burned, it is often Mr. Betula platyphylla, which often forms a large birch forest and is one of the main tree species that form natural forests. Wood can be used in general buildings, utensils and tools, and birch oil can be extracted from bark. Birch trees are planted alone and clustered in gardens, parks, lawns, Chi Pan, lakes or roadsides, all of which are quite beautiful.
In the north of China, on the grassland, in the forest and on the roadside of Shan Ye, it is easy to find dense birch forests. Birch is the national tree of Russia and a symbol of the national spirit of this country.