Environmental quality

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).

The Kersentuin (Cherry Garden), an environmentally, socially and economically friendly community in Leidsche Rijn, an urbanization-from-scratch area in the west part of Utrecht, has been founded and developed by the residents themselves. The area is very popular and is seen as an interesting best practice in ideal green neighbourhood developments (ref. 4). It is a sustainable neighbourhood which integrates technical and social sustainability by building sustainable houses and creating public green spaces that promote biodiversity and social cohesion. The main characteristic of the Cherry Garden is the self-management of the green spaces which is achieved by gardening days. The project was innovative at the time of implementation and inspired many other projects (ref. 1).

Coventry City Council's 'Public Realm Scheme' included a shared space scheme at Gosford Street. Work included newly planted trees, and landscape areas as well as an enlarged and improved pond. The project was funded by Coventry University and the European Regional Development Fund. (Ref. 1-4)

A former American military base was purchased by a private investor in 2014. Due to this event, the city decided to redevelop the whole area covering 27 ha and to create a development plan for a forward-looking quarter based on an architectural competition. In parallel to the development, information events for the wider public took place. The new quarter will be constructed according to criteria set out by the German Association for Sustainable Construction. Objectives of this plan are also to improve the microclimate, biodiversity, connectivity, social and functional diversity of the district (Ref. 1 and 2). In 2020, construction work had not yet started. Plans are to begin construction in 2024 the earliest and to complete it by 2027. (Ref. 7)

In an effort to improve the Holásecká lakes for both recreation and local natural conditions, the revitalization project has modified areas on the shores of the Holásecké lakes reconstructed culverts between the lakes, and removed the panel which fortified the Opleta and Lávka lakes (Ref. 4). The largest restoration activity includes removal of mud from the lakes (which can be repurposed due to low contamination) for the sake of ecologically restoring the area (Ref. 4). Plans also include improving recreation by installing wooden piers and developing a paved footpath with benches (Ref. 1). The ecological restoration will be important for wildlife, especially birds and amphibians (Ref. 8).

The project focuses on the development of a sustainable, social and ecological park that promotes citizen participation (ref. 2), which is one of the largest city parks in the Netherlands. It combines various blue-green infrastructure elements (ref. 1). The park includes recreational facilities, a butterfly garden and special constructions that provide habitat for species. The Máximapark runs largely on volunteers and the citizen participation is the outstanding character of the development of the park (ref. 2).