Air quality improvement

The Rákos-patak Green Corridor is a large-scale development project aimed at revitalizing the environment of the Rákos Stream on a 23 kilometre long path from it's areas in the outskirts of Budapest to the city center. The most important element of the development project is the planned bicycle lane, which would connect the already existing bicycle lanes along the stream into a full 23 kilometre one. In some areas of the planned corridor, other developments will happen with the goal of preserving and restoring habitats which originally existed in the area before it was first regulated. Near the outer areas of the stream, afforestation will also take place. (Reference 9) The area of the stream is currently underdeveloped. According to the plans, the new green corridor could help decrease urban stress.

This NBS site is part of the Bratislava Zelenaj Project. This particular NBS involves the creation of vegetation on buildings as a means to mitigate the effects of climate change in cities due to urban overheating caused by global warming. It targets the residents of the Archa House of Seniors (Domove seniorov Archa) in Bratislava as part of the citywide project “Bratislava is preparing for climate change” with the aim of protecting and promoting the welfare of the city’s vulnerable citizens from climate change effects. The roof's main function is buffering the discharge of excess rainwater. (10)

The Botanical Park is originally a garden which went through a modernization and rearrangement process in 2008. The park covers an area of 8.41 hectares and has a varied flora which is of Romania and also of various areas of the world which have a similar climate to the country. The purpose of the rearrangement was to maintain the area for scientific endeavours and to educate the public with respect to the importance of the environment. The municipality added this area to the 13th existing parks of Timisoara, which are part of the green belt of the city. (1)

Street alignments is a 2008 project developed by the Municipality of Timisoara in order to create a green corridor between the centre of the city and peripheral areas. It involves the creation of alveoli by mounting lawn and ornamental bark in different intersections of the city.

The Port of Alicante is finalizing the installation of a new environmental barrier at Pier 17, where bulk unloading is carried out, based on a water atomization method that allows dust particles to fall to the ground of the port area and not arrive by air to the city. (Ref 11) This initiative comprises activities to reduce pollution in the port, such as a vegetable barrier against the air pollution produced by the dust during the unloading of bulk materials, supplied by an irrigation system that recovers non-drinkable water from a nearby plant. It includes the extension of the Parque del Mar, to recover historical points for tourism and the funding of a research project on air pollution (Ref. 12). “This measure is integrated within the Plan of Urban Integration of the Port of Alicante, improving the landscape impact and the port-city boundary zones from the southern access of the urban environment, along with the “Parque del Mar”, to the west zone with the installation of vegetal screens in the inner zone of the port, contributing to an important particle retention and CO2 reduction.” (Ref. 1). Inside the park, which can be traversed through paths, there is a small ornamental lake with rockery and it has children's games and petanque courts, gymnastics courts and recreational areas. The green corridor has been created with the creation of artificial mounds, for which 65,000 cubic meters of earth have been necessary, which act as a vegetal screen and visually and acoustically isolate the port facilities of the city. (Ref 7)

Ecological parks are parks that reduce stormwater runoff and pollutant emissions. It refers to a number of techniques applied at the same time to reduce the total impervious surface of a parking space, the decrease in the surface temperature and maintain a green island in crowded areas. In Timisoara, until the date of this completed intervention (2009), there were located 11 ecological parking spaces, placed throughout the city, most of them near building blocks in former industrial quarters (3)

Opened in 1987, Lo Morant Park is located in the northern part of the city of Alicante. Its flat surface of 12 hectares is ideal for walking among its vegetated spaces and for the development of multiple activities focused on the neighborhood (Ref. 1). An educational environmental tour of the park is in place for learning and discovering the fauna and flora. The park offers different social activities and facilities (sports facilities, leisure). (Ref. 1). It is the largest park in Alicante with a dimension of twelve hectares, and has a great diversity of plant species and sports and cultural spaces. (Ref. 3)

The Urban Ecology Agency of Oslo (Bymiljøetaten) installed two CityTrees in the city of Oslo to act as green lungs in the city and reduce air pollution. The two CityTrees were placed at the Solli plass by Sommerrogata and on Nordraaks plass, close to Slottsparken. The CityTree is an environmentally-friendly plant wall with benches. (Ref. 2) It is an invention of a German company, Green City Solutions, and acts both as an aesthetically attractive furniture for resting, while simultaneously combating air pollution in city centres. (Ref. 1)

Revitalization of Rakova Jelša includes cleaning of the informal waste area and renovating it in a park which connects the city with the Marsh Landscape Park. In two phases, the park area was arranged together with the children's playground and the footbridge over Lahov graben. The possibility of regulated urban self-sufficient agriculture or gardens in the immediate vicinity of the city center means the added value of this area. (1)

This underground garage in Alicante, Spain, received a green roof makeover according to Alicante's climatological conditions (Ref. 2). Urbanarbolismo, a Spanish firm with a strong focus on vegetation, designed and installed this succulent garden in the courtyard of the garage. The garden is very low-maintenance and doesn't require any irrigation whatsoever. Further, with every passing year, it will grow more and more beautiful as the plants grow larger and take root. The Urbanarbolismo Benisaudet IVVSA parking garage was created by this Spanish design firm with the purpose of "keep[ing] the underground lot cooler, as well as improv[ing] its air quality." (Ref. 1)