What did Song of the Tree mainly write?

Song of Trees mainly describes the hundred trees, the top fruit trees, the northeast Pearl Plum, the tung tree, the Tokyo cherry blossom, the northeast Eupatorium, the winter red, the winter bo, the winter cherry blossom, the east brown, the bean pear, the azalea, the azalea, the Du Ying, the Eucommia ulmoides, the linden tree, the Emei Michelia, the Liriodendron and the goose. The text describes the shapes of several numbers through poems, vividly lets students know the characteristics of numbers in nature, and writes the growing environment of trees with words such as "put on a green coat and guard northern Xinjiang". The author of the extended information song of the tree is Zhou Yunan, Han nationality, from Lintong, Shaanxi Province, born in the afternoon of July 1940. Graduated from Chinese Department of Shaanxi Normal University. Professor, Northwest A&F University. He has been engaged in the teaching and research of garden history and forestry history for a long time, and founded the Forestry History Research Office of Xilin College. He is the author of the History of Shaanxi Gardens, which is an interesting book on flowers and trees, reciting scriptures for emperors in China and talking about trees in autumn gardens.