Improved governance of green or blue areas

The Nature Conservancy established the Cape Town Water Fund in 2016 using the worldwide applied water fund to enable downstream water users to invest in land conservation and restoration upstream. (4,5) In 2018, the Water Fund started its pilot project on the catchment area of the Atlantis Aquifer, outside of Cape Town's boundaries on state land. The pilot project "seeks to increase water supply to Cape Town by removing invasive plant species in water catchment areas. Invasive species have been found to use significantly more water than indigenous species and uptake millions of litres of water from the catchment area annually that would otherwise be added to the city’s water supply" ( 1 p7). The intervention also supports the empowerment of marginalized communities by providing training and employment for them. As one of the main characteristics of the water fund model, various local stakeholders from all sectors are invited to develop and implement water connected challenges (1).

The project "Sustainable Support Program for Greening Buildings and Minimizing the use of space using the example of Hanover" was established jointly by BUND (Bund für Umwelt und Naturschutz Deutschland) and the state capital of Hanover. The goal of the project is to transform as many barren house walls and dull grey roofs and asphalted areas into green oases throughout the city. Since May 2013, all house and landowners, housing associations and building communities have been able to apply to the BUND for a subsidy for green roofs and facades. On 2017, the project was expanded to include unsealing of areas like inner courtyards, driveways, etc, thus creating new green areas. Advice on the correct greening measures and on professional unsealing have been also offered by BUND.
The project is funded by the state capital of Hanover, the German Federal Environmental Foundation (DBU), the Sparkasse Hannover and by proKlima. The "Green Hanover" funding program will end on December 31, 2020. (Reference 1)

The NBS is located on a previously neglected basketball and other games fields with obsolete and long unused equipment. Owing to the citizens’ initiative, the municipality built a new sport and leisure site at the Jaroszowka housing estate in Białystok. The project has increased social integration between different generations and provided a comfortable, safe and surrounded by nature space for sports and recreation. The project involved the planting of greenery, building a multifunctional playground and a multisport field, and it was complemented by benches, toilets, CCTV, and lights [1,2,4].

In 2016, owing to the participatory budget of Białystok, the citizens received a long-awaited outdoor gym and playground in the vacant green area of the city. The initiative aimed to increase public access to the green recreational area in the city, and connect the Białka riverside with residential boroughs. The project involved greenery planting and re-arrangement of the greenery (including some deforestation), revitalization of a pond and water purification, connecting walking and bicycle paths. Lawns are available for family picnics and recreation [1,2].

A green roof of the total area of 362 m2 was established in a modernized historic neighbourhood in the centre of Bydgoszcz. The rooftop serves aesthetic and recreational purposes for the residents and visitors. Selected plants retain as much as 40-99% of rainwater and absorb air pollution [1].

The intervention takes place in one of the most important parks in Palermo, and the area plays an important role, by hosting several plant and animal species, and the intervention consisted of creating an agricultural area within the park with a community-based approach. This proved that agricultural initiative had an economic role to play for the city, and at the same time can enhance social inclusiveness. (Ref.1.)

This NBS is implemented on a nature reserve site, Ciuperceni-Desa, a protected area that has habitat types with natural eutrophic lakes, oligotrophic seawaters, panonic salty marshes, sandy panonic meadows, low altitude meadows, clusters of walnut vegetation and white poplar and cultivated arable land. In 2016 the Romanian Government alongside an NGO developed a plan for its protection and conservation since locals complained that it is not taken care off accordingly, that the area became a dump for people to trow their garbage and that it affects the species (1, 2)

This NBS was implemented in 2012 in order to conserve the biodiversity in the natural protected area of the Cilieni Pond and in order to ensure the sustainable development of protected species. The Pond was declared a protected area and covers ​​47 hectares. First an evaluation plan of the current situation was created, followed by a management plan. Inventory of the flora and fauna was conducted and protection methods were implemented: cleaning the area and educating the citizens that have a daily contact with the pond. (1)

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)

The Barcelona Green Infrastructure and Biodiversity Plan 2020 includes the development of several urban green corridors to increase ecological and social connectivity within the city. The green corridor of Passeig de Sant Joan is one of the first of these corridors implemented. The project consisted of the renovation of the promenade through tree and shrub planting and permeable green pavement installation, creating a green boulevard that benefits pedestrians and extend the urban green spaces, which gave new life to the neighborhood and allowed the expansion of small businesses and tourism (Ref 1).