Green densification model

The Queluz Green Bridge is a pedestrian link that includes the creation of continuous green space in the natural areas adjacent to the gardens of the National Palace of Queluz, with connections to the Palace Square and Quinta Nova, and the Parque Urbano Felício Laurel. Integration of the landscape by the integration of an acoustic barrier in the slope with vegetal cover, and by the green bridge of connection between the gardens of the Palace of Queluz and Matinha was also scheduled. (2)
In 2020 the Municipality of Sintra signed a memorandum for the construction of the Queluz Green Bridge, inserted in the Green and Blue Axis project. The approval of these documents allows the launch of the construction contract for Ponte Verde in the first half of 2020 (5).

This NBS deals with the recovery of an avenue (about five thousand five hundred meters in length, it is the longest Portuguese avenue) that connects Porto's City Park with another avenue and the seaside. The NBS is implemented by the municipality of Porto and it indents to create a green corridor between 2 locations: Ribeira de Aldoar and Avenida da Boavista. Previously, work has been done to this NBS, in 2005, but it was not finalized. (1) As of 2019, the Municipality of Porto announced that work will be halted for this NBS (5)

The Oriental Park of the City of Porto is an urban natural park designed by the landscape architect Sidónio Pardal. It will be one of the largest urban parks in the country and the second-largest in the city of Porto. This NBS focused on the transformation of a derelict, depressed urban area into a green space. The first part of the park was inaugurated in July 2010 and the municipality has plans to build it through several phases over the next decade until it reaches its project area. (1)

The park, dedicated to the Sicilian judge assassinated by the mafia in the early 90s, was the object of a regeneration project by two associations (with the approval of the municipality). The initiative was practically implemented by kids of several schools in Catania, which were invited to the park with the intention of cleaning the area to make the spot available to new plants and trees. This is not just a natural intervention, it is of great cultural and social value for the importance of the character for the city and region. (Ref.1.)

After 3 years of works, in 2020 the city of Gdynia revitalized one of its largest parks with a panoramic view on the rest of the city. Planned activities had included new greenery (suitable for the local climate conditions), rebuilding vegetation, creation of the educational paths, building water playground facilities and a sensory garden, open-air gyms and improved infrastructure for the disabled [1,2,3]. The final project focused on the renovation of the amphitheatre and the drainage system underground. Residents have been enjoying the park since June 2020 [7].

A tree planting programme (part of existing community greening initiative in the Mersey Forest) that is helping to transform Wirral into a thriving economic hub (trees planted on streets including Price Street, Cleveland Street, Argyle Street, and Hamilton Street, which are key transport routes around the Wirral Waters investment area). Trees will also be planted at Wirral Met College, as well as in social housing landscapes and gardens. (Ref. 1, 2). The project was completed in 2015 but similar initiatives have been taking place in Wirral since. There is no apparent connection between these projects and the 2012-15 project. (Ref. 7, 8)

This citizen-based initiative takes place in the heart of the city, in between the streets Montesano, San Michele, Carcaci, Sangiuliano. The project is the result of a collaboration among residents, artists and shop owners who are planning the regeneration of the area, which is currently in a state of decay. In particular, they realize green interventions (biological horticulture gardens, 100 new plantations) in the streets and on the buildings, to make the area more liveable and attractive for tourism. The initiative is fully supported by the municipality, who implemented the public areas to implement the interventions. (Ref.1.) This NBS has been an annual event, happening since 2013 (Ref. 2).

The project aims at realizing a large urban park to link the city and the sea coast. It is a project of significant social value, as it takes place in a neighbourhood which has been in a state of decay for 50 years. The intervention includes new facilities for recreation and sport, but first of all new plantations and the creation of rooftop gardens. It would be the second-largest park of the city, by linking the city and the sea. (Ref.1.)

The aim of the project was to extend and cover one of Germany’s busiest highways, the south-north highway (A7). The highway had divided neighborhoods from each other and had had negative environmental effects like noise and air pollution. The new green roof will have three parts that connect the existing green surfaces to each other, these parts constitute the three phases of the construction. The urban areas in the vicinity of the noise-reduced motorway will be developed for residential construction. The project also includes the reconstruction of the Langenfelder Brücke in a way which makes the bridge wider, and also provides better noise protection for locals. (Reference 10) In September 2020, only the first phase has been completed, and the final completion is planned for 2028. (Reference 1, 3, 12).

The first external green wall in the public space in Poland was installed on the surface of a 30 square meters wall of the Infobox building in Gdynia [1,2]. The project serves aesthetic purposes and aims to improve air quality. The wall was composed of the plants suitable for the Polish climate conditions [3].