Productive backyards program
The Productive Backyards Program is led by the NGO Granitos de Paz with the goal of promoting food security and income generation for vulnerable families in Cartagena. The program supports the creation of green gardens in household yards, provide technical training in planting, plant care, and supplies, as well as guidance and support for the creation of productive gardens, it also supports the commercialization of crops, fostering social cohesion within homes and positively impacting their environmental surroundings, nutrition, and health (ref 2, 3). A productive backyard is a small plot of land dedicated to growing vegetables for the family's daily consumption, providing fresh, healthy, and nutritious food. Family labour is utilised, offering both economic and nutritional benefits. This activity helps reduce malnutrition, improve the environment, and enable the commercialisation of organic products by making use of household yards (ref 6).
The program is led by the NGO and occasionally receives support from the mayor's office. The mayor's office has provided kits to the families with gardening tools, a watering can, mesh for enclosures, and seeds for 12 species, including tomatoes, sweet peppers, eggplants, bell peppers, Swiss chard, cabbage, and other vegetables. In addition to these supplies, families received training in entrepreneurship and business ideas for marketing their products, self-consumption, and all related concepts aimed at increasing production (ref 1 and 2). Currently, the program counts with 450 backyards in different neighbourhoods of Cartagena (ref 1).
The program is led by the NGO and occasionally receives support from the mayor's office. The mayor's office has provided kits to the families with gardening tools, a watering can, mesh for enclosures, and seeds for 12 species, including tomatoes, sweet peppers, eggplants, bell peppers, Swiss chard, cabbage, and other vegetables. In addition to these supplies, families received training in entrepreneurship and business ideas for marketing their products, self-consumption, and all related concepts aimed at increasing production (ref 1 and 2). Currently, the program counts with 450 backyards in different neighbourhoods of Cartagena (ref 1).
PON Metro Cagliari - Green Areas
In January 2024, the municipality of Cagliari inaugurated three new green areas in the city, adding five and a half hectares of green spaces for residents to enjoy. These areas are located between Keplero, Avicenna, and Parigi streets, not far from the city center (Refs. 1 & 2).
The primary goal of this initiative is to mitigate the effects of climate change, particularly rising temperatures. The green areas are designed to reduce the city's heat island effect and contribute to carbon sequestration. The planting of new trees will also help maintain ecosystems and improve environmental conditions in targeted areas . Special attention was given to soil quality, with most projects incorporating walkways equipped with drainage systems (Refs. 1, 2, & 4). Additionally, the new infrastructure aims to foster social engagement and attract more citizens, who will benefit from these improvements. (Refs. 1 & 2).
This initiative is also expected to boost the local economy by encouraging the development of small complementary services (Ref. 3). It is part of a larger municipal project co-funded by the EU.
The primary goal of this initiative is to mitigate the effects of climate change, particularly rising temperatures. The green areas are designed to reduce the city's heat island effect and contribute to carbon sequestration. The planting of new trees will also help maintain ecosystems and improve environmental conditions in targeted areas . Special attention was given to soil quality, with most projects incorporating walkways equipped with drainage systems (Refs. 1, 2, & 4). Additionally, the new infrastructure aims to foster social engagement and attract more citizens, who will benefit from these improvements. (Refs. 1 & 2).
This initiative is also expected to boost the local economy by encouraging the development of small complementary services (Ref. 3). It is part of a larger municipal project co-funded by the EU.
The Republic Services Garden
The Republic Services Garden is a one-acre garden created and located in Hance Park, a large urban park located in downtown Phoenix, Arizona. As part of the larger revitalization of the park, the garden was created to showcase native desert plants, recycled materials, and shaded seating, serving as a model for eco-friendly urban landscaping. Its key goals are to enhance the park's appeal, create a welcoming community space, and demonstrate the potential of sustainable design in cities. By blending nature with urban infrastructure, the garden helps mitigate the urban heat island effect, addresses water scarcity, and supports habitat restoration. The project is a collaboration between the City of Phoenix and the Phoenix Parks and Recreation Department, with financial backing from Republic Services, the second-largest waste disposal company in the U.S. (Refs. 1, 5, 7, 12, 15).
Trénnelle-Citron Experimental Garden
Trénelle-Citron, located north of downtown Fort-de-France and separated by the city bypass, La Rocade, was originally established in the 1940s by Black Martinicans migrating from rural areas. Today, the neighborhood faces significant economic and social challenges. In 2016, young residents from the neighborhood alongside a local NGO launched a grassroots initiative to improve their community. They transformed a former municipal quarry, which had deteriorated into an informal dump, into a thriving shared urban garden, benefiting the local population. This project, based on traditional ecological gardening techniques and the cultivation of native crops, aimed to revitalize Trénelle-Citron—a densely populated area grappling with social exclusion, a shortage of green spaces, and limited economic opportunities for its youth (Ref 2).
The garden, developed on municipal land with guidance from the Ypiranga Martinique NGO, support from the local school, and collaboration from various stakeholders, now plays a vital role in the area. It raises awareness about agroecology, offers socioeconomic opportunities, promotes healthier lifestyles, and fosters social connections among residents. Spanning approximately 1,000 m², the site includes an office, a covered area, tool storage containers, market garden plots, a composting area, and a chicken coop managed by a local resident (Ref 7). In Martinique, such shared urban gardens are increasingly seen as important tools for sustainable development (Ref 5).
The garden, developed on municipal land with guidance from the Ypiranga Martinique NGO, support from the local school, and collaboration from various stakeholders, now plays a vital role in the area. It raises awareness about agroecology, offers socioeconomic opportunities, promotes healthier lifestyles, and fosters social connections among residents. Spanning approximately 1,000 m², the site includes an office, a covered area, tool storage containers, market garden plots, a composting area, and a chicken coop managed by a local resident (Ref 7). In Martinique, such shared urban gardens are increasingly seen as important tools for sustainable development (Ref 5).
The Living Land Farm
In 2005, local farmers in the sub-urban area of Luang Prabang combined their lands and founded The Living Land Farm, a rice farming community that runs an organic farm and an educational centre. The farm comprises of rice fields, vegetable gardens, homestay, and a restaurant. The aim of the farm is to preserve traditional rice-growing techniques, practice organic farming while also adopting new ways of grain selection and planting, and share rice farming knowledge with others. The products from the farm have been used in the local restaurant and are distributed to hotels and other restaurants in Luang Prabang city. The farm also serves as a training site for students of the Northern College of Agriculture and it offers ‘Rice Experience’ package for anyone who would like to learn about rice growing and the local Laos culture. The homestay and restaurant are run by local people of the village nearby and they are open to the public. The farm supports various community projects, such as village improvement and teaching English for local children. (Ref. 1,2,3)
RISE Indonesia Project
Revitalizing Informal Settlements and their Environments (RISE) is one of the pilot projects carried out in the Batua neighbourhood (1.9 km2 area) of Makassar City (119 km2 area), province of South Sulawesi in Indonesia, which was commenced in 2017 and concluded in 2022 (1,2,3). Batua neighbourhood (six settlements of around 1,600 people) was the first demonstration site for this project which was completed in 2019 (3,4,5). The main challenge was that many households who lived in informal settlements lacked access to centralized urban infrastructure and faced threats from climate change (3,4). The project was proposed to reduce the impact of climate change on marginalized communities in Makassar by providing localized, water-sensitive interventions that addressed issues related to sanitation and water management (1,2,3,4). The introduction of water-sensitive solutions enabled targeted communities to recycle wastewater and rainwater, restore natural waterways, improve water quality, and reduce vulnerability to flooding (3,4). The RISE program initiative integrated nature-based solutions like wetland restoration, bio-filtration gardens (the process of using beneficial bacteria to clean water on a molecular level to remove contaminants), stormwater harvesting, filtration paths and new sanitation structures to improve wastewater management and diversify water resources through community-driven development (1,2,3,4).
Nisarg Udyan: From dumpyard to forest
In 2021, the local municipal government of Navi Mumbai City and a local NGO converted a neglected urban space used as a dump yard in Nisarg Udyan into a healthy and dense forest (Ref 1,2). The aim of the project was to improve biodiversity and complement the local ecosystem, choosing specifically native species from the local area for plantation (Ref 3). By applying the Miyawaki forest technique, the project was able to transform the wasteland into a 3-acre mini-forest quickly. A civic officer on behalf of the Navi Mumbai Municipal Corporation (NMMC) drove the re-forestation project jointly with the support of Green Yatra, a local NGO, and corporate social responsibility (CSR) funding support from Sony Music Entertainment (Ref. 1, 3).
Rajokri Lake Rejuvenation Project
The Rajakori lake rejuvenation project aimed at reviving an existing lake using a natural and sustainable treatment system, the "Scientific Wetland with Active Biodigester (SWAB)". SWAB technology uses a two-step process involving (i) a sedimentation tank equipped with a biodigester and (ii) a constructed wetland system. The untreated sewage waste is passed through this two-step process that uses microbes and plants to reduce pollutant levels. The project also involved redeveloping the public space around the lake for community use (Ref 1,2). Before 2017, the lake was overfilled with sewage and waste from nearby neighbourhoods due to a lack of proper sewage management. Initiated by the Delhi Government, the project aimed at using low-cost natural methods rather than conventional techniques involving concretized bases and chemicals to treat water (Ref 1, 4). Due to its success and cost-effectiveness, this project now serves as an excellent example for other projects within Delhi (Ref 5).
Ecological restoration in Rohingya refugee camps
The United Nations High Commissioner for Refugees (UNHCR) and its partners collaborated in 2018 to develop an ecosystem restoration project in the Rohingya Camps of Ukhiya, near Cox's Bazar. The main objective of this project was to mitigate the increased risk of landslides, slope instability, and flooding caused by flash floods and the vicinity of the Bakkhali River. The intervention included the planting of quickly growing native trees, shrubs, and grass species. Additionally, the project encompassed other measures such as vegetable cultivation on stream beds, biological soil stabilization methods, and plant-based wastewater treatments. To ensure the sustainability of the project, a network of future practitioners from the Bangladeshi and Rohingya communities was created. Moreover, environmental education and awareness activities were undertaken to complement the efforts of the project, with a particular focus on engaging young people from both the host and refugee communities to maximize its impact. The area where the project was implemented has been significantly affected by land and forest degradation over the last few decades, which has been exacerbated since the arrival of Rohingya refugees in 2017. Therefore, the project also involved other stakeholders such as the International Center for Conservation of Nature (IUCN), the Danish Refugee Council, the World Food Programme, the International Organization for Migration, and the Bangladesh government, each contributing in various capacities to achieve the project's objectives. (1,2,3,4)
Greening and Conserving Pirojshanagar’s Mangroves
Pirojshanagar Township is an industrial and residential establishment of the company Godrej & Boyce Mfg. Co Ltd (G&B), located in the Vikhroli suburb of Mumbai city along Thane creek, with diverse natural and human-made habitats (1,2). Of the 16 km2 area of the Township, approximately 12 km2 is occupied by the mangrove ecosystem and its associated habitats (1,2). Upon recognizing the importance of this ecosystem, G&B decided to prioritize the conservation of the mangroves that grew along the banks of the newly acquired land (along the Thane Creek west bank) (1,2). Pirojshanagar, with its biodiverse mangrove forest, is sandwiched between two solid waste dumping grounds of the Brihanmumbai Municipal Corporation (BMC), which only increases its importance in the landscape and makes it a green oasis that acts as a carbon sink (1). It was a research-based project and the first successful mangrove conservation project in Mumbai, now serving as the Mumbai Metropolitan's green lung (1,2).
