Street trees generally require a trunk height of 2.5-3.5 meters.

The tree shape and trunk height of street trees on the same road should be basically the same, and the difference in trunk height should not exceed 0.3 meters. The height of tree crown clearance on bicycle lanes and sidewalks should be no less than 2.5 meters, and the height of tree crown clearance on roadways should be no less than 3.5 meters.

It should be relatively consistent on the same main road. In areas where the road surface is narrow or where large vehicles pass, it should be 3 to 3.5 meters or more. On wider roads or pedestrian commercial streets, it can be lowered to 2.5 to 3.0 meters. Tree species with small branch angles can be appropriately lower, but it should not be lower than 2 meters.

The size of the tree body should be as neat and uniform as possible to avoid the aesthetic effect and management inconvenience caused by uneven heights and different sizes and thicknesses.

Requirements and cultivation of street trees

Street trees are characterized by neat tree shape, lush branches and leaves, large crowns and dense shade. It can reflect the order and unity of the city, and the height of the stem should be It is determined according to its functional requirements, traffic conditions, road nature, width and other factors. There is no unified requirement.

Generally, saplings need to be cultivated for more than 5 years before they can reach certain standards. First of all, street trees require height and beauty. They require a certain trunk height and crown width. Only by timely shaping and pruning can they grow into street trees that meet the requirements. Road greening is an important part of urban beautification. In recent years, the application of street trees in urban greening has become more and more diverse.