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Jamburi Park (also spelled as Jamboree park) is an urban park located in the Agrabad area (downtown commercial and financial area) of Chittagong. The area of the park has been for a long time an abandoned land used by locals to grow vegetables, illegally erect constructed makeshift shops, or to engage in illegal activities. (1, 3)

In 2015, the Public Works Department (PWD), a unit under the Ministry of Housing and Public Works, a pioneer in the construction arena of Bangladesh, decided to take back the land and transform it into a park with the purpose of capitalizing open spaces as well as creating a functional green area (1). Since there aren't many open places in Chittagong, PWD wanted to give the residents a place to get some fresh air (1).

Standing at 8.55 acres, the park was designed with trees belonging to 65 species as well as a 50,000 square-foot pool-like water feature (a lake) in the middle, 8,000 meters of walkways, two public restrooms, and two maintenance and electrical blocks. The lake's shore is bordered by a pathway that is ideal for walking and fitness. The green elements are displayed on both shores of the lake and they consist of various fruit, forest, and flower trees as well as grass. (3, 5, 6)

Located in the Eastern part of Tanzania's mainland, the city of Dar es Salaam has been a fast urbanising centre in Sub Saharan Africa. A steady population increase represents implications related to increased human activities, such as encroachment of hazardous land, poor urban planning, as well as lack of infrastructure, placing considerable pressure on the good functioning of the city and causing a rapid loss of green areas and of trees. In counterbalancing these aspects, peri-urban agriculture, artisanal fishing, and nature-based tourism contribute substantially to the well being and livelihoods of the inhabitants of Dar es Salaam. Understanding that nature plays a significant role in the sustainable development of the city and to address the issues above, the municipality of Dar es Salaam, alongside several stakeholders, elaborated a so-called "Thematic Atlas of Nature’s Benefits to Dar es Salaam", tailored specifically for the city. One of the aims of the atlas is to tackle climate change effects that are threatening Dar es Salaam by keeping urban and peri-urban ecosystems intact while implementing nature-based solutions. It is a balancing act coupled with the fact that Dar es Salaam is located in a globally important biodiversity hotspot, the ‘East African Coastal Forest’. (1,2,3)

Since 2008, the City of Portland, Oregon has used various policies and programming to encourage the use of eco-roofs (vegetated roofs) throughout the city to address stormwater management (Ref. 2,3,4). In addition to stormwater management, eco-roofs have the benefits of: saving energy, reducing pollution and erosion in waterways, preserving fish habitats, creating new habitats for birds and insects, absorbing carbon dioxide, cooling urban heat islands, filtering air pollutants, and providing urban green space (Ref. 1,5). From 2008 to 2012, the City of Portland used the Ecoroof Incentive program to encourage property owners and developers to construct ecoroofs (Ref. 4,5,12). In 2018, the City of Portland adopted a mandate for ecoroofs in new buildings (Ref. 2,3,12). These policies and programs led to a growing interest in the use of ecoroofs, and resulted in the construction of over 130 ecoroofs (Ref. 3,4,11).

The green roof pilot project is part of eThekwini Municipality's Climate Protection Programme, initiated in 2004, it was focused initially on understanding the vulnerability of the city of Durban to the impacts of climate change. A strong emphasis has been placed on identifying climate change adaption projects that will improve the resilience of the city to future developmental, social and environmental challenges. Basically, the green roof pilot project is a response to the higher temperatures and increase in the frequency and severity of floods and droughts that are expected as a result of climate change. From an urban environment perspective, these changes will exacerbate the already high temperatures experienced as a result of the Urban Heat Island effect and the high levels of surface run-off and flooding that result from the hardening of permeable surfaces. (1,3)

The Gorla Maggiore water park, inaugurated in March 2013, is situated within the municipality of Gorla Maggiore, in the Italian region Lombardy, located about 30 kilometers northwest of Milan. The water park is a constructed wetlands (CW) built on the banks of the Olona river that includes (a) a pollutant removal area composed of a grid, a sedimentation tank and four vertical sub-surface flow constructed wetlands; (b) a multipurpose area with a surface flow constructed wetland or pond with multiple roles; and (c) a recreational park with restored riparian trees, green open space, walking and cycling paths. [1]

North Wirral Coastal Rangers and volunteers are working together to plant discarded Christmas trees to stabilise sand dunes between Leasowe Bay and the Gunsite area of the North Wirral Coastal Park. The Christmas trees help to catch and trap sand blowing in from the beach and in a few years will create artificial dune shapes, benefiting plants and animals. (Ref. 1)

In 2016 the Rangers and volunteers undertook a dune restoration project at the Gunsite. They advertised for the public to drop off their old Christmas trees at a collection point. The trees were then used to reinforce the dunes and trap sand. This was very successful and in 2017 they continued with the project, again with great success. In 2018 they ran a high profile social media campaign using Twitter and Facebook, asking for more Christmas Trees. This has generated a huge response and generated over 900 trees. It also prompted Radio Merseyside to interview Dave Stevenson, the Coastal Ranger, over the project and how it was helping to stabilize and re-establish the dunes (Ref 8).

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)

Fil vert aims to help green the streets in Normandy and raise awareness among citizens of the importance of being an actor of their daily life with regard to the occupation of public space. They aim to "embellish our streets, which are often devoid of vegetation, but also to train responsible citizens" (Ref. 7). "Operation "Fil Vert" was launched at Croix de Pierre (District) in Rouen in September 2013 to beautify and revitalize the district by mobilizing residents and tradespeople. It aims of installing planters in front of the inhabitants and the merchants (subject to obtaining the agreement of the owners in case of hiring), along the pavements, provided that it makes at least 1.40 M width to allow strollers and wheelchairs to pass." (Ref. 3)

The Strasbourg Grandeur Nature Plan is engineered by Strasbourg Metropole and is focused on optimising the actions and resources and resources of local authorities in the maintenance of local biodiversity and improving the living environment (Ref. 7). It combines with local associations and citizens through organising interfaces (e.g. workshops, online tools) that allow relevant local authorities to engage with local projects and make interventions on the basis of proposals made by the community. The project aims at improving the maintenance and development of green spaces and biodiversity due to the environmental issues surrounding urban sprawls (Ref. 4).

"The Conservatoire des Restanques is dedicated to preserving biodiversity (conservation orchard, forgotten vegetable garden, Mediterranean garden with the typical plant species of low limestone Provence) and to be a showcase of the current considerations of Sustainable Development (energy, waste management, water resources management, etc.). The development of the site and the different elements of the landscape make it possible to develop educational programs on the themes of flora diversity, wildlife, heritage conservation, food, consumption and health, eco-construction and energy management" (Ref. 3).