Green noise barriers are effective measures to reduce noise emissions along highly frequented roads. They are often designed as walls with a ground based greening. The construction is usually made of concrete, brick or wood and is covered with a vertical plant layer. Ground based green barriers represents a commonly used type of noise barriers along roads, especially in areas with limited space for earth walls.

Basic information

Type: 
Retrofitting + Creation

Performance

Evapotranspiration 1 1
Shading none none
Reflection (Albedo) none
Water Conveyance none
Water Infiltration none
Water Retention none
Water Storage none
Water Reuse none
Water Filtering none
Water Bio-remediation none
Deposition 1
Bio-filtration 1
Habitat Provision 1
Connectivity 1
Beauty / Appearance 1
Usability / Functionality none
Social Interaction none
Role of Nature / Mode of Action: 
Climbing plants are part of forests, rocks and shrub areas. The plants grow from rather small areas of natural soil and often need supporting vertical elements or porous surface (roots).
Technical & Design Parameters: 
Ground based green noise barriers need to be equipped with supporting facilities for plants e.g. wires and trellis.
Conditions for Implementation: 
Sufficient root space at the bottom of the noise barrier is required in order to provide good growing conditions for the plants.
Benefits & Limitations: 
Benefits: The plants absorb fine dust and often enhance the visual appearance of noise barriers. Vegetated noise barriers reduce heat, depending on the coverage of the wall elements.

This project has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 730052 Topic: SCC-2-2016-2017: Smart Cities and Communities Nature based solutions