Greening is an important part of urban construction. It has a close relationship with urban people and its functions are various.

No.1: beautify the environment

Landscaping is an important means to beautify the city. The beauty of a city, besides being good at making use of the city's topography, roads, rivers and buildings to match the environment in urban planning, design and construction, can also reflect the beauty of the city flexibly and skillfully, and can also use the different shapes, colors, uses and styles of trees and flowers to configure green spaces with rich colors all year round, with trees, shrubs, flowers and turf layered and embedded in the buildings of cities and factories. It not only makes the city put on green clothes, but also its magnificent colors are accompanied by fragrant flowers, dotted among trees and lush greenery, which can make the finishing touch and add icing on the cake, creating a beautiful, fresh and comfortable environment for the broad masses of people to work, study and live.

No.2: Purifying the air

Garden plants have a unique role in purifying the air. They can absorb soot and dust, absorb harmful gases, absorb carbon dioxide and release oxygen, which all play a very good role in purifying the air.

1. Absorb smoke and dust

Dust in the air and dust flying out of factories are harmful substances that pollute the environment. Although these dust particles are small in weight, their total weight in the atmosphere is amazing. The average amount of dust falling per square kilometer in many industrial cities is about 511 tons, and some cities with very concentrated industries even reach more than 1,111 tons. For every 1 tons of coal burned in cities, 11 kilograms of dust will be discharged. In addition to coal dust, there are also dust produced by the crushing of industrial raw materials, including metal dust, mineral dust, plant dust and animal dust. Dust not only contains carbon, lead and other particles, but also sometimes contains pathogenic bacteria. When it enters the nasal cavity and trachea, it is easy to cause diseases such as rhinitis, tracheitis and asthma. When some dust enters the lungs, it will cause serious diseases such as silicosis and pneumonia. After planting trees, trees can greatly reduce dust and dust in the air, and the functions of trees in absorbing and filtering dust are shown in two aspects: on the one hand, because of the dense branches and crowns of trees, they have a powerful effect of reducing wind speed, and with the decrease of wind speed, the large dust carried in the airflow decreases. On the other hand, because the leaves of some trees are rough and fluffy, they secrete sticky grease or juice, which can absorb a lot of dust and floating dust in the air. After being washed by rain, the dusty trees can restore their dust retention function.

the total leaf area of trees is very large. According to statistics, the sum of forest leaf area is dozens of times of forest area. Therefore, the ability to absorb stagnant smoke and dust is great. According to the preliminary measurement of general industrial areas in China, the concentration of floating dust in the air is 11%-51% less in green areas than in non-green areas. It can be seen that trees are natural filters of air.