Improved air quality

The project RUIS (Riqualificazone Urbana Infrastrutture e Sicurezza), stands for the regeneration of urban infrastructure and safety. The initiative is carried out by the municipality of Palermo, in order to improve the urban resiliency of the intervention area, with the creation of further green areas in neighbourhoods dealing with problems of heatwaves and environmental degradation. The main areas which will be the focus of the regeneration process will be those considered to be in degradation state. It is expected that the quality of life of the residents will significantly improve (Ref.1.).

The Werd Administration Centre contains a green park that provides a good variety of trees with an aesthetic view of the city. Ornamental cherry trees create a lively atmosphere, in the spring with their double-blossom flowers, and in the autumn as their canopy changes colour. This park has been renovated a few years back to increase habitat diversity. The building itself got another renovation in 2014. (Ref 1)

It is one of the most famous parks in the city. A re-design is offering the opportunity to make use of the full potential of the place and to put it back into the public’s focus – as a place for recreation, a park, a promenade and Zurich’s very own, most central urban park. An urban square was formed, representing generosity and offering space for multiple functions. A gateway from park to courtyard during the daytime, the mirroring water surfaces of the illuminated pools, and the annex’s reflecting façade create the atmosphere of a grotto at night (Ref 1).

The Generalunternehmung Losinger Marazzi AG is developing a sustainable city quarter with Greencity, incorporating alley trees, pocket parks, house gardens, and green areas attached to the buildings (Ref 2). The landscape concept contrasts the new concentration of urban housing, services, and businesses with the landscape’s natural geomorphological features. The place is very close to the Sihl river. The river landscape defines western and eastern Manegg which benefit from other characteristic natural features, forests and the grasslands of the Entlisberger embankment. The newly erected, densely built “GreenCity” dovetails with the natural landscape it’s nested in (Ref 1).

The office building of the Nord/LB Bank that was built in 2002 became a landmark of Hannover. A huge proportion of the building is naturally ventilated. The interior is designed with progressive energy concept with superstructure exposed and windows that provide ventilation. The building is also protected from noise and vehicle emissions through the areas of double façade, which also serves as a duct transferring clean air from the central courtyard to the individual offices. The reflection of daylight is increased through the large areas of water in the courtyard which also contributes towards a beneficial microclimate. The building is also equipped with generous roof gardens which not only provides aesthetic benefits but also improves the general climate for the occupants, and collects rainwater for irrigation and use within the building.
The building is owned by Norddeutshce Landesbank and was designed by BEHNISCH, BEHNISCH & PARTNER (Reference 2).

The city of Leipzig initiated the project "Für eine Baumstarke Stadt" in 1996 to integrate community support into the greening of Leipzig through tree planting. Citizens can become tree sponsors with a donation of 250 Euros or more supporting the increase of the tree stock in parks, on the street and at squares since they are planted in addition to the tree stock determined by the city department for urban green. The sponsorship includes a sign with the indication of the tree species and a personal message. This programme contributes to a greener city landscape and strengthens the attachment of citizens to their urban environment (1, 2, 3).

The "New Nature" also called "La Calanque" is a new housing residency and business designed by the famous architect Jean Nouvel. The building design is inspired by the typical Mediterranean sea landscape called "calanque" (creek in english). "As an essential component of the project, vegetation is ubiquitous from the ground to the façades, from the heart of the buildings to the terraced roofs" (Ref. 2).

The initiative created the first in the city anti-smog garden around a local school. The garden serves multiple purposes as it will include: a greenhouse and a composter, the air-pollution absorbing plants that will attract birds and insects and protect the school from urban dust and noise, a vegetable garden, houses for hedgehogs, birds and butterflies, a 'sensory' path for medicinal gymnastics, a roofed gazebo, a meteorological station and a book exchange booth. It is open to other schools and kindergartens and the general public during the school working hours - for educational purposes and recreation [1,2].

This NBS comes as a reply against the municipality of Iasi which in 2013 cited lack of visibility and aesthetic preoccupation decided to cut over 100 linden trees and replace them with Japanese acacia in the city centre. The action enraged the inhabitants of the city who alongside local and national NGOs took the matter into their own hands and protested. As such in 2015 the municipality re-planted the linden trees (1).

An afforestation campaign was launched in 2016 across the whole North Region of Plovdiv, with the aim of making the region a more pleasant and greener place of living with cleaner air. This ongoing campaign has consisted of planting trees, shrubs, and flowers in different places in the region (Ref. 1; Ref. 2).