Improved air quality

The entire neighbourhood area was calling for interventions, considering the conditions of decay of this part of the city. The initiative was requested by the residents of the area, in particular considering the state of plants and trees. What needs to be provided is a new surface of grass to replace the terrain on the ground to avoid problems of flooding and new plantations. The park has an important function in terms of mitigation of anthropogenic pressures, but also in terms of social value for the residents. (Ref.1.)

The association Legambiente Catania has presented a project to protect and enhance the biodiversity of the Cibali forest, a natural reserve in Catania close to the volcano Etna. The area has been subjected to strong anthropogenic pressures in the last decades, and the area is home of several species of flora and fauna. The main aim of this intervention Is to protect endangered species and to preserve the services the forest provides in terms of air quality regulation and heat mitigation. In addition, the entire zone is a cultural heritage for the whole island (Ref.1.)

The Natural Park of Augsburg - Western Forests covers a 1,200 square kilometer of the natural area. Founded in 2007, the park aims at preservation and development the natural biotopes in the area. As a supplier of timber, as a guarantor for clean air and pure water, and last but not least for recreation seekers, it is of outstanding importance in Bavarian Swabia (Ref. 1).

Sofia is Europe's most polluted capital and the World Health Organization alarmed that Bulgaria ranks second in the world in terms of deaths due to air pollution per capita. In response to that, the coalition Sofia - Green Capital planned to buy neglected urban land and plant an Urban Forest in order to restore the green passes that lead the fresh air from the mountain to the city. The Urban Forest is expected to improve the air quality, sequestrate carbon emissions, and also provide a place for walks and play. (Ref. 1; Ref. 2). The planting process started in 2018 and around nearly 60,000 saplings were planted over 225 acres by over 6,500 volunteers and over 50 companies joined in. (Ref 7, 8)

Wirral Waters is the largest regeneration project in the UK. It will transform over 500 acres of the Birkenhead docklands into an internationally recognizable destination (where e.g. innovation and sustainability will thrive). (Ref. 1, 2). While the whole project will take up to 30 years to finish, the first phase has started in 2019 and building work has begun on three projects which will bring 1,000 homes and breathe new life into 500 acres of former dockland in the town. £220 million will be invested in the next three to four years alone in an effort to build high quality, high-density accommodation with lots of green space and employment opportunities close by (Ref 10,11).

"Formerly a 10 hectare market gardening site, the Repainville area is rich in environmental potential: ponds, streams, springs ... the aquatic environment is present everywhere. There is a great variety of fauna and flora. As an ecosystem that is particularly rare in urban areas, protection and recovery measures are being undertaken" (Ref. 1). The restoration of the wetland of Repainville is part of a flagship project of the municipality in terms of safeguarding biodiversity in urban areas. With arrangements allowing the public to walk there without harming the biological and natural diversity of the place, the site has an educational dimension in order in particular to make young audiences aware of the preservation of the ecosystem (Ref. 7).

The community garden "Les Hauts Sèment" is located in Rouen in the district of Lombardy, being the first community garden of Rouen animated by the city in 2011. It is "an educational garden which has been created and is maintained by the gardener in association with users wishing to invest in the association. It is supported by different animations" (Ref. 1 and 2, page 12).

A living green wall packed with plants including primula and thyme was the latest addition to the university's Medway Campus. It was part of a university research project that assessed the benefits of small-scale living walls (ref. 1).

The project is an initiative that is part of the environmental management system of the University of Murcia. This initiative aims to implement activities related to sustainable agricultural systems while also serving as a space for social cohesion for the members of the community (Ref 3). For this reason, a community garden was constructed and the slots are until 2019 distributed between members of the community of the university based on a bid (Ref 1).

This intervention involved the removal of sediment and revitalization of the banks along with the rehabilitation of the urban part of the Segura River in Murcia. This was done to strengthen the environmental condition of the river and improve the visual aspects and the access of citizens to the river (Ref 3 and 7). In 2020, they are building the second part of the project, where the aim is to build three different walkways that join the two sides of the rivers and that will connect specific places along with it (Ref 5).