Public engagement

Kronsberg was built as a model district of sustainable urban development for the EXPO 2000, which motto was 'Humankind-Nature-Technology'. In the previously intensively farmed area, 3200 new dwelling unit was built. Among other sustainable technologies, the planners of the district developed a quasi-natural drainage system that aimed to provide the municipalities a sustainable alternative for traditional drainage (Reference 1, 2).

20 years after planning started in 1992, EXPO district of Kronsberg has proven its viability in terms of sustainable urban development and provided important foundations for advanced urban planning of new buildings in Hannover and elsewhere. The project was showcased in the ‘Crystal’ exhibition pavilion in London as a global standard for integrated construction. The ‘World Cities Summit 2012’ in Singapore also paid tribute to the residential area as one of the world’s hundred most innovative infrastructure projects (Reference 1, 2013).

Due to human interventions into the natural river flow with dykes, drainage of agricultural and grassland or cutting off its water bodies, the wetland Elster-Luppe had lost its groundwater base which decreased its biodiversity. With the support of the regional biodiversity fund and building on previous efforts, the city of Leipzig, together with partners such as the NABU Sachsen and research institutions, has revitalized, renaturalized and connected the water bodies of Leipzig's North-Western wetlands to one continuous watercourse since 2012. Its objective is restoring its ecosystem functions and increasing awareness for the importance of wetlands (4, 5).

The Bizardin is the community garden of Hellemmes, created by the association AJOnc (Amis des Jardins Ouverts et néanmoins clôturés) on the initiative of a group of inhabitants. Managed by the locals, it gives life to the neighborhood where children like to play, watch insects, sow radishes, watch for frogs. A living garden where wild and cultivated plants come together and create a floristic richness often unsuspected by the simple passer-by, a result of many years of work. It is also an ideal place to observe as insects and birds swarm. (Ref 1)

The garden is located on the territory of the social welfare home 'Helclów' in Kraków under the protection of a regional monument conservator. It is supposed to integrate the residents of various age and support physical rehabilitation and leisure with elements of garden therapy. Its main goal is to integrate the elderly from the social welfare home with other citizens through joint activities, such as flowers and herbs planting and caretaking. The initiative involves planting greenery (including 314 trees and 134 square meters of shrubs between 2010 and 2016), setting a grill area, and renovating the infrastructure for the disabled. The garden is supposed to serve as an offset for harmful developments in other parts of the city. Private investors are often obliged to provide resources for new trees in the garden’s natural wall and a noise and pollution barrier. The park is publicly accessible between 9 AM and 6 PM and is available for the organization of events and meetings. The concept to open the previously closed garden to the public was initiated an application for a participatory budget in 2016 and very much supported by all parties involved [1,2,3].

The Pasteur clinic in Toulouse installed a 500m² vegetable garden on the roof of its building in 2014. Maintained by clinic employees and various associations, the garden makes it possible to develop a friendly atmosphere and learn gardening while promoting biodiversity (Ref. 2). The garden grows produce including green beans, tomatoes, basil, strawberries and raspberries, (Ref. 3) and contains flowers such as nasturtiums, Cosmos, tagettes and edible chrysanthemums (Ref. 4).

The ANNALINDE gGmbH operates multifunctional urban agriculture and demonstration projects in the Western part of Leipzig: a community garden, a nursery and a fruit garden on a former train station where the emphasis is on community development and mutual learning processes in addition to food production. This is safeguarded by an events portfolio consisting of garden working days, workshops and collaborations with schools, kindergartens and like-minded organizations. In addition to that, open urban labs are operated for a number of initiatives and projects covering subject areas like urban agriculture, recycling, composting, urban bees, urban resilience and sustainable urban development (1).

In 2016 the Environmental Protection Division of Hannover's Department of Environment and Urban Environment started a common pilot project, KlimaWohL, with Bothfelder Kamp GmbH & Co. KG and the Gundlach Group. The building project in Hanover-Bothfeld, formerly called “Hilligenwöhren”, was renamed to “Herzkamp”. By 2021, the family company Gundlach will build approx. 300 terraced houses, rental and freehold apartments. The aim of the project is to implement a new residential area where the researchers of KlimaWohL can systematically test the climate adaptation strategy of Hanover. The new residential area that aims to be an innovative example of climate-adaption for other cities will be equipped with extensive green surfaces and will pay attention to protect the natural environment and species. (Reference 1, 3). In 2018, planting the edge of the forest was started, wherein a tiered 20m wide border consisting of shrubs and trees were planted between the forest and the residential area. Construction of the rental apartments was started and by 2019, the row houses and semi-detached houses have started to be sold. The shell has been completed and the interior work has started. By 2022, overall completion of the project is foreseen.

The project is the reforestation of the peri-urban parks of the city of Malaga in order to make the city greener while adhering to the dry and hot climactic condition of the region. It consists of phases, where native trees to the region were planted totaling over 50 000 new trees in the city. (ref 1-10)

In 2012 Marks & Spencers funded a volunteering initiative, the Big Beach Clean-up, through which their staff were able to volunteer to clean local beaches and waterways to make local environmental improvements. This initiative is part of M&S’ Forever Fish campaign which is funded by the profits from the 5p carrier bag charge in M&S foodhalls. The 4th annual Big Beach Clean Up (which took place in 2015) aimed to clean 135 beaches and canals up and down the country with over 8,000 people (3,000 M&S employees and 5,000 M&S customers) (ref. 5). As part of this initiative, around 30 members of staff from Nottingham’s local high street store went down to the canal, between Castle Meadow retail park and Meadow Lane Lock, and spent the day removing masses of litter from the water (ref. 3).

Allotment gardens have a long tradition in Hannover, with approximately 20.000 gardens stretching around the city as a green belt. In the last decades, some gardens were threatened by disappearance due to investment interests (Reference 1). With the goal to protect these gardens, the city employed a so-called "Kleingartenkonzept" (allotment concept) in 2016 with the help of the association of allotment gardens (Bezirksverband Hannover der Kleingärtner e.V.). The concept aims to keep the number of existing gardens for social and ecological considerations while allowing for new residential investments which is vital for the growing city. (Reference 2).
As part of the concept, extensive inventory examinations were conducted on areas affected by conversion and restructuring, along with the start of implementation of smaller development projects for housing and the creation of replacement gardens in some areas. Because the need for residential spaces has been covered for until the end of 2019, the conversion of allotments for the said land use has been stopped; it will be revisited in 2024. (Reference 2)
To address the problem of future allotment garden losses, gradual elimination of permanent vacancies has started by creating new smaller and more attractive gardens from oversized ones, by improving accessibility and optimizing spaces, and by modernizing allotments (Reference 2).