1 General
1.0.1 This Code is formulated in order to give full play to the role of road planting in improving urban ecological environment and enriching urban landscape, avoid planting from affecting traffic safety, ensure the living environment of greening plants, standardize planting planning and design on road, and improve the level of planting planning and design on road.
1.0.2 This code is applicable to planting space planning and design on urban trunk roads, secondary trunk roads, branch roads, plazas and social parking lots.
1.0.3 The planting planning and design on urban road shall follow the following basic principles:
1.0.3.1 Road planting shall mainly be arbors, in combination with shrubs and ground plants to fully cover the soil;
1.0.3.2 Road planting shall meet the requirements of driving sight and driving clearance;
1.0.3.3 The mutual location of greening trees and municipal utilities shall be arranged as a whole, and the trees shall have the required site conditions and growth space;
1.0.3.4 Planting shall be in suitable places with suitable plants, and conform to the associated ecological habits among plants; the soil that is not suitable for planting shall be improved for it;
1.0.3.5 Valuable existing trees should be preserved and ancient and rare trees shall be protected during road construction.
1.0.3.6 Road green space shall be equipped with irrigation facilities as required. The slope direction and gradient of the road green space shall meet the drainage requirements and be combined with urban drainage system to prevent ponding and soil erosion and water loss in green space;
1.0.3.7 Road planting shall be combined with long-term and short-term considerations.
1.0.4 The planting planning and design on road shall not only meet the requirements stipulated in this code, but also comply with the requirements of current relevant standards of the nation.
2 Terms
2.0.1 road planting space
plantable land within the land use coverage of roads and squares; road planting space can be divided into road greenbelt, traffic island planting space, square planting space and parking lot planting space
2.0.2 road greenbelt
linear planting space within the boundary line of roads; road greenbelts can be divided into division greenbelts, roadside tree greenbelts and roadside greenbelts
2.0.3 division greenbelt
plantable divider between carriageways: when it is located between motor vehicle lanes moving in opposite directions, it is middle division greenbelt; when it is located between motor vehicle lanes and non-motor vehicle lanes, or between motor vehicle lanes moving in the same direction, it is two-side division greenbelt
2.0.4 roadside tree greenbelt
greenbelt laid between sidewalk and carriageway, mainly planted with roadside trees
2.0.5 roadside greenbelt
greenbelt laid on the side of the road and between the edge of the sidewalk and the boundary line of road
2.0.6 planting space of traffic island
plantable land of traffic island; traffic island planting space can be divided into central island planting space, guide island planting space and interchange green island
2.0.7 planting space of central island
plantable land of central island at the intersection
2.0.8 planting space of guide island
plantable land of guide island at the intersection
2.0.9 interchange green island
plantable land enclosed by interchange trunk roads and ramps
2.0.10 planting space of square and parking lot
plantable land within the land use coverage of square and parking lot
1 General
2 Terms
3 Planting planning on urban road
3.1 Road planting rate index
3.2 Layout and landscape planning of road planting space
3.3 Selection of tree species and ground plants
4 Greenbelt design of roads
4.1 Design of division greenbelt
4.2 Design of roadside tree greenbelt
4.3 Design of roadside greenbelt
5 Planting space design for traffic island, square and parking lot
5.1 Planting space design for traffic island
5.2 Planting design of squares
5.3 Planting design of parking lots
6 Road planting and related facilities
6.1 Road planting and overhead lines
6.2 Road planting and underground pipeline
6.3 Road planting and other facilities
Annex A Explanation of wording in this code
