Increased perception of safety

The creation of Nyandungu Wetland Eco-Tourism Park is part of Rwanda’s efforts to restore and conserve ecosystems while promoting social-economic development. The Rwandese capital, Kigali, experiences regular flooding during rainstorms, due to the runoff from the surrounding urbanized hills, with the stormwater concentrating at the valley bottom in former wetlands. These floods cause disruption to traffic, preventing all travel between hillside communities. In order to address stringent issues, the focus turned on the wetlands surrounding the capital of the country. One of these wetlands is the Nyandungu wetland, which has suffered a lot of land use changes over the years, including agricultural activities, pasturing, cattle farms, sand mining, and wetland reclamation. From a climate change point of view, the project aims to address problems related with flooding and sustained base-flows in rivers. From a biodiversity point of view, the project aims to enhance biodiversity conservation. The main goal is the reconstruction of the Nyandungu Wetland Eco-Park with green infrastructure and services strategies for green energy, saving and recycling water, use of local and natural materials as well as architectural designs that maximize natural lighting and ventilation. (1,4)

The intervention targeted a section of the Dominguez Creek for restoration, with the aim of achieving a "multi-benefit project [which] creates passive and active recreation opportunities for park-poor communities, reestablishes native riparian plantings and captures stormwater before entering the channel along the Dominguez Creek in cities of Gardena and Hawthorne" (Ref. 2). Previously being characterised by the local community as a “Triple U” (Undesirable, Unsafe and Unusable) area, the project aimed to support a variety of environmental, sustainability, and humanitarian activities (Ref. 1). The nature-based solution interventions which were implemented as a result of the project mainly pertained to the planting of in situ trees, shrubs and groundcover plants; restoration of the riparian habitat; temporary installation of a "mini-urban forest for a shaded respite from the harsh downtown streetscape"; aiding in stormwater capture; conservation of water resources through using native plant species; and creating "watershed awareness" (Refs. 1, 2, 4, 5 and 8).

Under Sustainable Development Goal 11 (make cities and human settlements inclusive, safe, resilient and sustainable) in 2017 a coalition of stakeholders including the Municipality of Asuncion started the implementation of an initiative focused on improving the quality of life in the Metropolitan Area of Asunción through green infrastructure in a sustainable and resilient city framework. Why Asuncion? Cities and metropolitan areas are fundamental centres of economic growth: they contribute approximately 60% of world GDP. However, they also account for around 70% of global greenhouse gas emissions and more than 60% of resource use. Asuncion makes no distinction - it is a city with a high flow of cars and transportation, irregular flooding (the sewerage system there has already been exceeded for some time), and urban growth. Trying to respond to some of these challenges, the present intervention has been proposed with a duration of 5 years. (1,2)

As of 2011, Windhoek, the capital of Namibia, has a population of approx. 330,000 people. By 2018, an estimated 40% of Namibia’s 2.4 million population were living in shacks and Windhoek makes no exception. Approximately 30% of the capital population lives in unplanned informal settlements struggling to access basic services such as water and sanitation. Worse than that informal settlements are especially vulnerable to environmental hazards: they are squeezed in next to each other on the slopes of mountainsides. When there's the occurrence of floods, they do so with such force and wash away people’s homes and their belongings. Even more distressing, people often lose their children due to rapid and unannounced flash floods. As a response to these threats and challenges the inhabitants of an informal settlement, Onyika (located in Okuryangava - which is a suburb of Windhoek, situated in the north of the capital city) paired with local authorities, donors and climate change experts to embark on a community-led process of creating a climate-resilient community. Being especially vulnerable to climate change, these forms of settlements require special attention in the development of climate resilience strategies. (1, 6)

Medellin is the second-largest city in Colombia. The city used to be one of the most dangerous in the world, as Pablo Escobar founded here the Medellin cartel. After the death of Escobar, the city's homicide rate has decreased by 95% and extreme poverty by 66%, thanks in part to a string of innovative mayors who laid out plans to integrate the poorest and most violent hillside neighbourhoods into the city centre in the valley below. The same innovative mayors realised that Columbia and its cities are very vulnerable to climate change being located in a tropical zone and is influenced by El Niño and the La Niña. In Medellin, the municipality has built upon a tradition of planning to become an urban lab for the construction of public life with the aim of inclusive, peaceful and sustainable development. As such starting in 2008 Medellin began implementing a green strategy whose goal was the creation of a green belt around the city as well as waste control. The intervention discussed in this case is one initiated in 2014 when the municipality carried out planting and reforestation projects for the protection of the eastern slopes of the city. (1,2,3)

Quelimane is a port city in Mozambique. It lies below sea level right alongside the Good Signs river (Rio Bons Sinais), and just a few kilometres from the coast. The frequent extreme weather phenomena such as rain and marine flooding render the city extremely vulnerable to climate risks. In 2013, the municipality concluded that one solution involves restoring large areas of mangroves, which act as a nature-based solution against flooding, helping to stem the tide by preventing soil erosion. In the past mangroves were cut down by the locals for building and cooking but now with the help of the municipality and local communities, the trees are restored and used as the first line of defence against climate change (1).

The Green Urban Infrastructure in the municipality of Beira project aims to increase Beira’s resilience to climate change and flooding (Ref. 2). It is a two-part project that consists of rehabilitating the Chiveve River and constructing a public park along the river (Ref. 1). The river rehabilitation was completed at the end of 2016 and restored the natural flow of the river, enabling better flood control (Ref. 5,6). The public park was completed at the end of 2020 and serves as a recreation, catchment and overflow area through three basins of the river (Ref. 1,2).

"In Winnipeg, there are several downtown neighbourhood groups (such as the Spence Neighborhood Association, and the West Broadway Community Organization) that make use of vacant urban space for the benefit of indigenous communities, and encourage them to maintain green spaces, ‘tot lots’, and a network of dozens of community gardens. There are also community-led indigenous ‘healing lodges’, Indigenous gardens, medicine gardens, as well as a land-based education programs (e.g. Marymound) using gardening to help at-risk indigenous youth heal from trauma and build resilience in these neighbourhoods." (1 p41).
One such community gardens are the Chief Grizzly Bear’s Garden (in its official, Anishinaabe name: Ogimaa Gichi Makwa Gitigaan) focusing on increasing the visibility of the indigenous community in the Spence Neighbourhood and providing public space for gathering and traditional indigenous ceremonies honoring their connection to nature. The garden is also the place for cultivating native plants significant for traditional medicine practices (1).

Another NBS initiative supporting the indigenous community in Winnipeg will be the Clan Mothers Healing Village and Knowledge Centre (CMVH) initiated by The Elders of Winnipeg. The CMVH will be located in rural Manitoba and provide a land-based, nurturing community living environment for indigenous women and youth who have been victims of intergenerational trauma, sexual/domestic violence, or human trafficking and support their reintegration into society. (1,2)

Sihlcity, one of Switzerland's largest shopping malls, is located in the Wiedikon district of Zurich. It was built on the grounds of a former paper mill, Papierfabrik Sihl, near the Sihl River. The Green Wall of the Sihlcity car park is a striking feature of the development at a height of 23 meters and a width of 25.5 meters. The wall is an elegant aesthetic solution to the car park facade, keeps the car park cool during summer, provides insulation in the winter, sound insulation for the busy car park, and an effective deterrent to graffiti. [1]

Initiated by the City Administration, NGOs and citizen groups, public funds have in recent years been used alongside partnerships with local businesses, landowners and citizen initiatives to invigorate the East Quarter. This initiative was proposed through the redesign, extension and new development of parks, greening and communal use of vacant plots, the establishment of new urban forests, the setting up of new communal gardens, and the planning and partial implementation of a green corridor for cyclists and pedestrians.
Within this large project, three NBS areas actively contributed to the improvement of the Quarter: Querbeet, Bunte Gärten and Parkbogen Ost (1).
Querbeet is a community garden in the Eastern district of Leipzig, formed in 2012. The garden is lead by democratic self-governance principles where the focus is on shared space, with a focus on enhancing cultural interactions and encouraging active citizenship (1). Since 2017, the plot of the garden has reduced, however, the non-profit organisation formed two new gardens: a community garden and a school garden where environmental education the main activity (2)
Bunten Garten (Colorful Garden) is a community garden and registered refugee aid association that aims to bring residents and refugees together (3) The garden was revived in 2015, and since offers opportunities for recreation, wellbeing and informal support to refugee families (1).
Parkbogen Ost is a scheme focusing on developing unused railway tracks as an arch-shaped, green mobility corridor running along the perimeters of much of Leipzig’s East Quarter and connecting the quarter’s green spaces and providing easier access, by foot or bike, to the city centre as well as to surrounding areas. (1, 4)