Urban gardens of Poblenou
It is a community garden initiated by the autonomous assembly of the Poblenou neighborhood. It has changed location a number of times, eventually occupying the empty lot of demolished buildings. Over time the garden has expanded, taking over an adjacent empty space, as well as other yards in the neighborhood. The garden is not maintained for strictly productivity purposes, especially because much of its soil has been contaminated by a soap factory. It is, rather, used as a space for social encounter and knowledge sharing on planting and working with the earth on a communitarian basis (Ref 1 and description provided by CEU). This NBS is also part of a wider movement, the 15M movement in Spain (Ref 1), which had influence on the creation of larger similar global economic 'occupy' movements (Ref 5). Video for the opening party of the 8th self-managed squatted garden in the Poblenou neighborhood, Barcelona from April 11, 2020 shows that the idea of the first garden has lead to the creation of at least 8 of these gardens in the city (Ref 6).
Agrarian Park of Baix Llobregat
The Parc Agrari del Baix Llobregat is located in the floodplains of the delta and lower valley of the river Llobregat, in the Catalan county of Baix Llobregat, in a central position within the metropolitan area of Barcelona. The territory of the park (nearly 3500 hectares), includes a rich traditional agricultural activity and comprises fourteen municipalities totaling about 818,000 residents. It is protected by a specific planning instrument and managed by the Barcelona Provincial Council (Diputació de Barcelona) (Ref. 1 and 9). The park acts as a green lung for the metropolitan area of Barcelona and at the same time as a pantry for Mercabarna, the large wholesale market that provides food and drink to the inhabitants of Barcelona and surrounding towns, although there is also production that is exported (Ref. 10). The Agrarian Park is the only one in the world so close to a large city and it promotes specific programs to preserve the productive values of the agricultural space and promotes quality local products and local consumption. (Ref. 10)
Social urban gardens of “Pla Buits” (Vacant Lots Plan)
This is a co-management initiative fostered by the City Council of Barcelona that aims to involve civil society in defining, installing and managing unused spaces across all districts of the city. The city council provides temporary use for public entities or non-profit associations to develop temporary uses and activities (from one year to three renewable years) in order to promote social activism and cohesion in the neighborhood. Most part of activities are social urban gardens (Ref 1). The initiative had 2 editions, with 12 projects in the first one (2013) and 5 projects in the second one (2015) (Ref. 12). One of the most popular projects is the community gardens such as ConnectHort, in Poblenou, dedicated to permaculture, which has allowed the restoration of an abandoned area through sustainable urban agriculture practices (Ref. 12). Another project, the Illa dels Tres Horts project in the Font de la Guatlla neighborhood, is an orchard where work is done with vulnerable groups and allow the recovery of vulnerable species (Ref. 12)
Foresta Plan 2030
It started with the “Let’s Plant for the Earth, Let’s Plant for Murcia” project, as Murcia’s committed to the United Nations Billion Trees Campaign. The city of Murcia committed itself in 2008 to plant 12 000 trees around the urban fabric through a series of action projects. The target was exceeded in 2010 with a total of 23 576 trees pledged and planted toward the campaign (Ref. 1).
In 2020, after having surpassed their 12,000 planted trees goal, Murcia has the new goal of planting 100,000 trees by 2030. It is a long-term project that the municipality committed itself to make (Ref. 5, 2020a).
In 2020, after having surpassed their 12,000 planted trees goal, Murcia has the new goal of planting 100,000 trees by 2030. It is a long-term project that the municipality committed itself to make (Ref. 5, 2020a).
Cleaning of the Chirita Pond
The Chirita dam is the drinking water reserve of Iasi. The lake is protected by law, with bathing or fishing prohibited. In 2013 it was cleaned and sanitized since it became an area where many people used to dump their house residues. As such a national campaign sponsored by an NGO having social responsibility claims implemented this NBS, which meant cleaning the shores of the lake (1).
Huveaune riverbanks: Rehabilitation and Development
In 2010, rehabilitation works on the Huveaune riverbanks, in the city of Marseille, were carried out by volunteers from three associations: Rives & Cultures, Planète Sciences Méditerranée, and Hunamar. Work included clearing, revegetation, and maintenance of riverbanks (Ref. 1). Since this initiative took place, the l'Huveaune Watershed Union has been formed and taken steps to formalize the rehabilitation of the Huveaune riverbanks (Ref. 2, 3, and 4).
Transformation of abandoned land into neighborhood garden
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).
Street greening
Since October 2015, the City of Marseille has implemented a vegetation permit called "Visa Vert" (Green Visa), as well as a "Charter for the vegetation of public spaces in Marseille", which allow individuals to install plants in public spaces
while respecting the safety and use of the tracks by other users. Plants, flowers and shrubs can thus contribute to the beautification of the living environment and "bring a bit of nature into the city" (Ref. 1). The charter aims to “ accompany and support initiatives to revegetate the streets and promote collective actions that contribute to embellishing the living environment ”, but also to “ enhance the presence of plants in the city, to respect the public space which belongs to all and thus to improve living together ” (Ref. 5).
while respecting the safety and use of the tracks by other users. Plants, flowers and shrubs can thus contribute to the beautification of the living environment and "bring a bit of nature into the city" (Ref. 1). The charter aims to “ accompany and support initiatives to revegetate the streets and promote collective actions that contribute to embellishing the living environment ”, but also to “ enhance the presence of plants in the city, to respect the public space which belongs to all and thus to improve living together ” (Ref. 5).
Bailen Garden
The garden is an opportunity for training, leisure and coexistence where the teaching of ecological gardening is combined with the love of plants and the social use of land. Consolidated in just one year as a training point for the unemployed without losing that playful-neighborhood component with which it opened its doors. In it the volunteers develop a methodology of teaching that facilitates the socialization and the reintegration work when acquiring knowledge in gardening and carpentry. (ref 1)
Incredible Edible in Aix en Provence
INCREDIBLE EDIBLE (or "Incroyables Comestibles" in French) is an experiment of social innovation: the volunteers of the movement cultivate small vegetable gardens scattered in the cities and the countryside and make their products available free of charge (Ref. 1). This, the first intervention, took place in front of the "Epicerie du Coing" where volunteers planted several vegetables, flowers and plants (Ref. 2).

