Environmental quality

This project was the first green roof in the city of Bologna, and it has been carried out by the University of Bologna in collaboration with the Columbia University of New York with the aim to prove more evidence on green roof stormwater performance. For the Engineering School of Bologna University the existing roofs had a load capacity that was able to host only an extensive roof, without the costly need of being reinforced. In the extensive roof type the vegetation is usually very drought resistant and plants can adapt to difficult environmental conditions, therefore sedum was chosen (1).

The project aimed to tackle two environmental problems through an integrated policy: climate change (both the mitigation and adaptation effects of urban forestation) and air quality. The project foresaw the dissemination of public-private partnership tools, developed within the framework of corporate social responsibility experiences, and the distribution of specific guidelines. Specifically, the project planned to develop a public-private partnership model for urban forestation through the adoption of the ‘green areas inner-city agreement’ (GAIA). This was expected to include three specific protocols for green urban areas covering management, monitoring and mapping resulting in 3000 trees planted across Bologna (1).

The ReLambro project is based on a metropolitan view where nature becomes an occasion for regeneration of the city: the river is no longer an empty and abandoned space but draws a great ecological and environmental system. The interventions, during the design phase, provide for the restoration of the naturalness of large sprawling areas, the reinforcement of the hedges and rows and channels system, the reorganisation of public and fruiting functions in areas at risk of flooding. The project strengthens ecological function by integrating it with urban functions (2).

Bundek Park is one of the urban planning projects aimed to create a recreational and sports area for the citizens and tourists to support a healthy lifestyle (Ref 3). The lake is surrounded by Bundek Park which stretches for 2,000 meters in length with an area of 35 hectares. The lake is about 5 hectares. the lake was initially used for fishing, walking and swimming. With the increased and carefree use of the lake, the lake and the environment became a waste disposal site. In 2005, by the decision of the Mayor, Mr. Milan Bandić, the renovation of Bundek began. The project included cleaning of the informal waste disposal site and shrubs blocking access to the lakes, renovation of the access to the lakes, planting flowers and introduction of the benches and water also to allow citizens to use the lake for recreation and enjoy the nature (Ref 2).

The Air Pollution Garden (APG) in the UK has been established at Sheffield Botanical Gardens through a collaboration between the three White Rose universities of Leeds, York and Sheffield. Typically an (APG) size is 6x8m and contains plants that are particularly sensitive to damage by pollutants like nitrogen dioxide (NO2) and ozone (O3) present in the air. The project owners hope to raise public awareness of air pollution effects in a tangible manner and change people’s behaviours (ref1).
In 2017, the city council hosted AirFest to push this initiative further (ref 8), a ‘Phyto-sensor’ toolkit was created by the Citizen Sense research group at the University of London to help identify the best locations for Air Quality Gardens (ref 6) and published the Air Quality Annual Status report (ref 7). In 2020 the project is considered as completed, although there are several different other projects in planning.

This intervention is part of an action plan by the Junta de Andalucia to develop an intervention model for disadvantaged zones to facilitate the social inclusion of persons at risk or socially excluded, and the socioeconomic growth of the area. (Ref 1) The project is a pilot to transform one of Sevilla's poorest neighborhoods, Los Pajaritos, into an eco-neighborhood. (Ref 14)

“The Royal National City Park, the world’s first national city park, was created in 1995 by the decision of the Swedish Parliament. The Park was established to safeguard and enhance the unique qualities of this area, containing outstanding natural qualities and heritage sites, ecologically important for the metropolitan area, and situated near and easily accessible from the central parts of Stockholm.” (Ref. 1)
One can experience a truly unique historical landscape, intertwined with parks, beautiful buildings, forests, open fields and beaches. In 2020, the park celebrates its 25 the year. (Ref. 12)

The El Patriarca Park aims to rehabilitate and restore 60 hectares of land for ecological benefits and recreational purposes for the inhabitants of Cordoba (Ref.1,3,4,6). It takes place on a site with distinct areas, including a holm-oak forest with Mediterranean scrubland of extraordinary environmental value. This NBS is an effort to protect natural values, erase the traces of urbanization attempts of the seventies, and repair damages caused by human action (Ref. 6). Implementation of the project is expected to start in early 2021 (Ref. 6).

Eko Ekipa Prečko is an alternative urban garden in Zagreb which was initiated and promoted by the locals. The initiative was not supported by the government initially. Regardless of the lack of support, citizens jointly cleaned an illegal waste disposal site and the bushes and shrubs there to initiate a communal garden. Besides ecological food production, they also organize educational workshops for children and adults to get familiar with life in nature (Ref 1). People of all ages, the majority between age 30 and 40, from Prečko and neighbouring districts are involved with the garden (Ref 4).

This NBS is part of the new Porta Nuova area, an extended urban transformation of a neglected area of Milan. It consists of two residential towers of 110 and 76 m height hosting 800 trees and over 20,000 plants from a wide range of shrubs and floral plants distributed according to the sun exposure of the facade. On flat land, each Vertical Forest equals, in amount of trees, an area of 20,000 square meters of forest. In terms of urban densification it is the equivalent of an area of a single family dwelling of nearly 75,000 sq.m (3).