City Tree Selection
Introduction to candidate "City Tree"
National locust
Fa tong
Luan tree
Luan tree, Latin name Koelreuteria paniculata Laxm., genus Luan tree in the subfamily Apocynaceae. Deciduous tree, up to 15 meters tall. The bark is thick, gray-brown to gray-black, the flowering period is from June to August, the fruit period is From September to October, the branches and leaves are luxuriant and beautiful, the summer yellow flowers are full of trees, and the autumn leaves are yellow. Luan trees are light-loving, drought-tolerant and barren, and have strong adaptability to the environment. Luan trees have deep roots, moderate growth rate, strong resistance to soot, and few diseases and insect pests. Produced in most provinces and regions of northern and central China, Luan tree is an important ornamental tree and street tree species in our city.
ash
Ash tree, Latin name Fraxinus chinensis Roxb., genus of ash in the family Rhinoceros, deciduous tree, up to 12 m tall, ovate crown, yellow-brown bark, odd pinnate compound leaf pair, conical inflorescence, summer flowering, flowering period 3-5 months, fruit ripening in October. Like light, slightly shade tolerant, like warm and humid climate, quite hardy, like wet and waterlogging, drought tolerant, not strict soil requirements. Resistant to soot, strong resistance to sulfur dioxide, chlorine, hydrogen fluoride. Germination and tillering are strong, resistant to pruning, and grow faster and have a longer lifespan. Ash is produced in the north and south provinces and regions, this species has a long history of cultivation in the mainland, because of the straight characteristics of the trunk, symbolizing the positive force, is an important landscaping variety in our city, planted in Guangli Street and other roads and China National Garden and other parks.
chinaberry
Neem tree, Latin name Melia azedarach Linn., Neem family Neem genus, deciduous tree, up to more than 10 meters; the leaf shape is beautiful, at the turn of spring and summer, lilac flowers bloom, flowers are colorful, the flowering period is long, and there is a light fragrance. The bark is greyish brown, longitudinally lobed, widely branched, and the twigs have leaf marks. Neem trees grow strongly, are resistant to wind, prefer warm and humid climates, prefer light, are more hardy, drought tolerant and barren. Neem trees can not only resist toxic and harmful gases such as sulfur dioxide and hydrogen fluoride, but also control a variety of pests, known as "pollution-free plant insecticides". Neem trees are more common in the provinces and regions south of the Yellow River on the mainland, and are excellent street trees and shade trees, which have been widely cultivated in our city and planted in sui and Tang Dynasty ruins botanical gardens, Xiyuan and other parks.
Big Leaf Privet
Privet, Latin name Ligustrum lucidum Ait., genus Privet of the family Lepidocephalus. Evergreen trees, up to 10 meters high; The leaves are papery, the flowering period is July, and the fruit ripening period is 10-11 months. Prefers light and is slightly shade tolerant; prefers warmth, is not hardy; prefers wetness and is not drought tolerant. Strong adaptability to soil, deep roots, wide spread of lateral roots, strong wind resistance, slow growth and long lifespan. It is mainly distributed in the Yangtze River Basin and southern provinces in China, and is also cultivated in North China and Northwest China. It has the function of dust and smoke resistance, can absorb sulfur dioxide, often used as a street tree and park greening tree species, and is currently widely planted in Luoyang City.
cedar
Cedar, Latin for Cedrus deodara (Roxb.) G. Don, is a genus of cedars in the family Pinaceae. Evergreen tree, about 30 meters high, the bark is dark gray, cracked into irregular scales; the branches are flattened, slightly oblique or slightly drooping, the crown is spire-shaped, the large branches are flattened, the small branches are slightly droopy, and they do not wither for many years. The leaves are needle-shaped, hard, gray-green or silver-gray, scattered on long branches and clustered on short branches. Prefers plenty of sunshine, is also slightly shade-tolerant, in acidic soil, slightly alkali, and has strong dustproof, noise-reducing and sterilization capabilities. Cedar is one of the world-famous ornamental tree species in gardens and has been widely cultivated in the mainland as a garden tree and street tree. Cedar trees are tall and beautifully shaped, widely used in our city, planted in Longmen Avenue, Zhongzhou West Road and other roads and parks and communities.