Set up specifically for this NBS

After being abandoned for more than 10 years following the collapse of a building, a piece of land inside the city's "Le Panier" district was approved by the city in 2017 to become a "neighborhood garden" combining green space and a community vegetable garden (Ref. 1). After many delays the project was completed in early 2020 and the garden opened on February 28, 2020 (Ref. 11). The district "Le Panier" (where this intervention occurs) attracts many tourists every year for the charm of its narrow streets and colorful facades (Ref. 1).

The Royal Society for the Protection of Birds (RSPB) Cymru’s Giving Nature a Home in Cardiff aims to engage thousands of children, their families, and local communities with Cardiff’s wildlife, enabling them to take action for nature (ref 9). To do this, the project provides free outreach sessions in nurseries, early-years settings/schools, and primary schools across Cardiff to help children discover the wildlife in their school grounds. To reach families, nature-based activities are held. Finally, the project supports communities to help improve and manage pollinator-friendly Urban Buzz sites across the city (ref 9).

After more than one 100 trees were slaughtered in a few months upon order of the city in 2016, the association "Défenses des Arbres en Pays d'Aix" was created by multiple NGOs with the purpose of saving the plant heritage of Aix-en-Provence. Their main goal was to encourage the city's council to establish a "Charter for trees" dedicated to the city of Aix en Provence (Ref. 1). The work of the association was useful as the city decided to engage in a new charter, and prepare a new planting season with 64 trees (in 2016) (Ref. 4). The Charter was developed in 2017 (Ref. 6) and an environmental management plan for activities was developed in 2018 (Ref. 7).

In response to floods that had been afflicting the Rhiwbina area of Cardiff, a capital scheme was promoted in order to develop an integrated Rhiwbina Flood Defence Scheme. First, a pond was built in the Caedlyn Park to capture peak flows during extreme rainfall (ref 2; ref 8). The City of Cardiff also built low walls alongside the brook that flows through the neighbourhood to better channel water while also removing debris and reinstating the banks that had eroded over time (ref 1; ref 2). Additionally, by realigning and widening the watercourse, establishing earth bunds and creating a large attenuation pond downstream that aligns with the drainage system (ref 7). Taken together, flood risk decreased for the area overall, assisting local residents.

Manchester’s Stevenson Square was given a green makeover. In addition to securing funds from Manchester City Council, the project underwent a substantial crowd fundraising campaign to transform the square into an ‘urban oasis’ and provide street trees, permeable pavements and planters.The pavement was extended on one side of Stevenson Square which enabled street trees to be planted. More tree planting undertook on the central reservation and a green roof was designed to collect and store rainwater. Self-irrigating hanging baskets were installed on lamp posts (ref 4).

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)

The Willowbank Community Garden is a council-maintained recreational area consisting of both turfed and concreted areas and waist raised beds, edged by some shrubs and trees. It is a small space (460 sqm.) but offers a variety of growing environments. The site is located within the residential community of Willowbank Crescent, easily accessible from Woodlands Road and a five-minute walk away from the Glasgow University main buildings. Local schools are also in close proximity. The place offers locally grown foods with aesthetics and contributes to urban green space. In 2012, it won "Keep Scotland Beautiful" Award (Ref 2).

The Forest of Belfast is an imaginative label for urban tree initiative launched in the 1990s with the aim of conserving and managing existing trees, increasing the planting of suitable trees, particularly in places of public access like parks, and in promoting an interest in and an appreciation of trees and forestry(Ref 3). The project was officially launched in June 1992 (Ref 1). It is active throughout the urban area of Greater Belfast, including Belfast City. It brings together partners from the statutory sector, voluntary groups, businesses, and individual residents who become volunteer Tree Wardens. It shows how urban forestry can forge partnerships between central and local government, environmental organizations and city dwellers. (Ref 1). Forest of Belfast initiative was wound up towards the end of 2010 (Ref 6).

The Sowe Valley Project was a community-based project focusing on rivers restoration. It aimed to link the local community with the Sowe River Valley and to improve the valley’s biodiversity and habitats for the benefits of people and wildlife. (Ref. 2, 6, 11-13)

Glasgow Green is the largest park in central Glasgow with an area of 55 ha. The Glasgow Green renewal project was planned in order to restore the area from the disrepair and poor aesthetic quality to attractive, extensive open spaces, modern play facilities, spacious winter gardens, and historic people’s palace (Ref 1). The Glasgow Green renewal plan has been devised to restore Glasgow Green (including the People's Palace and Winter Gardens, Fleshers' Haugh and Richmond Park) to its original glory and create an improved visitor attraction. (Ref 3)