Green densification model

The initiative promoted by the event “Primavera Mediterranea” (Mediterranean spring) transforms the central pedestrian area of via Argirio into an urban park. The project is aimed at rethinking the urban spaces in a green way, as urban gardens are built within the whole central area. The main benefit of the initiative is to give a green view of the city centre, a new dimension of the lived urban space. In addition, workshops and manifestations are organized within the area, to promote also the social and cultural value of the zone. (Ref.1.) The intervention is an initiative taking place every year since 2011, which lasts for days. Private shops, associations and consultancies work together to realise the urban gardens in the main street in Bari. (Ref.1.2.&3.)

The hurricane Kyrill devastated up to one-third of the tree stock in the city of Münster and thereby changed the green cityscape in 2007. Therefore, the civic society movement "Foundation Citizens for Münster" initiated the project "Bürgerbäume" (literal translation: citizen trees) to foster reforestation of the promenade of the city castle and other affected spots in 2008. In collaboration with the city department for urban green, motivated citizens and citizen groups took over tree sponsorships with up to € 1,000 per tree to help restore the urban green within three months after the event (ref. 1, 4).

Champratel Eco-District is mainly a housing development plan with new green space areas which will be part of the green corridor of the city. "It will be a real "Garden-District" to offer participatory housing: "For La Grande Plaine, the city of Clermont-Ferrand wanted to go beyond the simple redevelopment of a neighborhood by implementing an innovative approach: participatory housing. It's a new way of collectively designing, creating and managing individual homes" (Ref. 11). It will offer harmonious urban forms and vast green spaces. It will mainly offer a concordance between two desires: the proximity of the city and a pleasant living environment" (Ref. 2). Three main green spaces have been created including a meadow in the north, a green square Rose-Parks to create a meeting place for the inhabitants, and diverse gardens (some of which are maintained and others which are wild" (Ref. 5).

In 2011 the Municipality of Lisbon promoted a project for urban gardens in the Horticultural Park of Telheiras (Ref.4).
The park is an allotment garden with the objective of supporting the urban agricultural practice for its own consumption. The residents of the locality had the possibility of renting at a symbolic price, one of the plots made available by the municipality (ref.5).
Beyond the provision of plots, the Council also provides fences, shelters for storage, water irrigation, training and technical support (ref. 1).

Park Lužánky underwent extensive reconstruction between 1991-2012 through five phases (Ref 2) to restore a recreational hub of the city's largest park through ecologically sound design (Ref. 1; Ref. 2). Each phase worked restored different sections of the park. This included modification of green areas, landscaping (treatment of trees, planting new trees and perennial plants, restoration of grasslands), building a children's playground, a fitness park, and an artificial water element that imitates the former stream of the river Ponávka. (Ref. 1).

Tree heritage is an essential component of the urban environment in Clermont Ferrand. The city has a special plan for conserving the trees, proposing a tree charter (Ref 6) and made a major effort to extend its tree heritage. Different actions are undertaken by the city's council for conserving and planting trees around the city. For instance, the tramway has integrated the plantation of 1,400 trees and 140,000 shrubs (Ref. 1). In 2019 the city solicited a preliminary study on metropolitan trees for the development of a metropolitan tree charter (Ref 7).

The city district Japigia in 2013 has proposed a project of a new park that links the necessity of housing, open spaces, urban sustainability. The park is centre of green spaces with a high level of accessibility, in a part of the city which was previously abandoned. The presence of hedges and trees guarantees the liveability of the area, while at the same time providing important ecosystem services such as mitigation of urban pollution and mediation of visual impact. The same can be said for the vertical gardens which will characterise the entrance of the park. (Ref.1.)

The Willem Alexander Park is the first roof park of Utrecht and is built on a highway tunnel (the A2 highway) and includes meeting areas, sports and activities and a community garden that contributes to social cohesion. It also allows for cultural development by creating spaces for art and culture and includes a sustainable drainage system (ref. 1, 2). In addition, the Willem Alexanderpark is the first park in which almost two hectares consists of prairie plantings (ref. 2).
The park is intersected by the roads between the City road and Leeuwenstein-North. Each segment between the roads has its own thematic program, appropriate to the size and location in the urban context. The themes are:
– connect & meet
– art & culture
– sports & games
– nature & education
– food & drinks (ref. 4)

The Kriegsstraße is a large street in the centre of Karlsruhe which experienced traffic problems for a long time. Since 2005 there have been plans to redevelop the area into a multifunctional public space area to be used by cars, trams bicycles and pedestrians. Due to financing problems, the solution has been put on hold for a long time but in 2015 construction work of the so-called “combined solution” project has finally started. The plan is to renovate the Kriegsstraße, including the tram tracks above the surface and to create an underground tunnel for cars. The surface above the tunnel will be greened through the implementation of an alley of trees, green bicycle lanes and pedestrian paths as well as greened tram routes (Ref. 1). In August 2020, the implementation of the project is nearing completion and is expected to be finished in 2021 (Ref. 9, 10)

The project relating to the waterfront of San Girolamo di Bari is an important piece of the mosaic that provides a new design for the entire city waterfront, from North to South: Santo Spirito, Palese, (precisely) San Girolamo, the connection between Bread and Tomato and Torre Quetta, temporary uses on the San Giorgio waterfront, up to the redevelopment of the South promenade. The project which is almost completed, regenerated the seaside part of Bari, making the seaside accessible and link the city with the coastal area by creating a multi-functional space where playgrounds, a cycling path and green open spaces were built to enhance the liveability of the area. In this way, what was previously considered just as an economic and working part of the city became a new center of social interaction by creating a new institutional green space. (Ref.1, Ref.6).