What is the width of the green belt in the middle of the city road?

The width of the isolation belt varies from 3 meters to 6 meters, and the width of the isolation belt in the middle of Renmin Road reaches 24 meters. Follow the following principles: the width of the separated green belt for planting trees is not less than 1.5 m, and the width of the separated green belt for main roads is not less than 2.5 m; The width of greenbelt of street trees shall not be less than1.5m.

(1) The design of the green belt of the compartment car follows the following principles: the plant configuration of the green belt of the compartment car should be simple, with neat trees and consistent arrangement. The distance from the center of the trunk to the outside of the kerb of the motor vehicle lane should not be less than 0.75 meters; The green belt in the middle should block the glare of the opposite vehicle.

Within the range of 0.6m to 1.5m from the road surface of adjacent motor vehicles, the plant crowns should be densely planted all the year round, and the spacing between plants should not be more than 5 times of the crown width; If the width of green belts on both sides is greater than or equal to 1.5m, trees are the main ones, and trees, shrubs and ground cover plants are combined. The canopies on both sides above the expressway should not overlap.

If the width of the green belt is less than l.5m, shrubs should be planted, and shrubs should be combined with ground cover plants. One end of the green belt disconnected by crosswalks or road entrances and exits should be configured in a transparent way.

(II) Design of Street Tree Green Belt The design of street tree green belt follows the following principles: The planting of street tree green belt should be based on street trees, and trees, shrubs and ground cover plants should be combined to form a continuous green belt. When the green belt of street trees can't be planted continuously on the road with more pedestrians, breathable pavement should be adopted between street trees.

The tree pond should be fenced. The planting spacing of street trees should be based on the crown width of the tree species in their prime, the minimum planting spacing is 4 m, and the minimum distance from the center of the trunk of the street tree to the outside of the kerb is 0.75m m. DBH of planting seedlings of street trees: fast-growing trees should not be less than 5cm and slow-growing trees should not be less than 8cm. Within the triangle of sight distance at road intersections, the green belts of street trees should be configured in a transparent way.

(III) Roadside Green Belt Design The design of roadside green belts follows the following principles: Roadside green belts should be designed according to the nature, protection and landscape requirements of adjacent land, and should maintain a continuous and complete landscape effect in the road section. When the width of roadside green belt is more than 8m, it can be designed as an open green belt. In open green space, the area of green space shall not be less than 70% of the total area of green belt.

Extended data:

Road isolation belt:

There are usually two forms of green belts separating urban road traffic: single row (separating upper and lower lanes) and double row (separating fast and slow lanes).

Although the green space is small, it is widely distributed in the city, and its position is important and conspicuous, which has a great influence on the city appearance. The use of green belts to separate lanes ensures the trajectory and safety of vehicles, reasonably handles the relationship between traffic and greening, and plays a role in traffic guidance and safety isolation. At the same time, it can also block the glare of the opposite driving vehicle.

References:

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