Environmental quality

Rapid urbanization and a steep increase in population determined a loss of open spaces in Dhaka, the capital and the largest city of Bangladesh. To counteract these issues, Dhaka North City Corporation (DNCC) (one of the two municipal corporations in Dhaka, a governmental unit responsible for administering and providing basic infrastructure to the city) has implemented the Green Dhaka Campaign. One of the initiatives under the Green Dhaka Campaign is the renovation of Justice Shahabuddin Park, located in a dense area of Dhaka. (1, 6)
The intervention was initiated in 2017 and consisted of revamping the park by revitalizing the existing pond, planting new trees, and providing amenities for the people living in the neighbourhood where the park is located. The design decisions were taken by prioritising the opinions of different user groups and in consultation with naturalists. The idea of the 9-acre park was to create a safe, "inclusive and accessible public space for all inhabitants, free of crime and violence". (2)
The renovation also consisted in retaining the majority of trees present in the park, as they offered a variety of species such as medicinal trees, fruit trees, and floral trees. This helped with preserving the biodiversity of the space as well as a healthy environment, lauded by the majority of visitors, making the park a favourite of the locals. Three distinct lanes are also made available in the park for jogging, walking, and cycling. (1,2,3,4)

Vietnam's capital, Hanoi, is the second largest city in the country and is one of the most vulnerable to climate change. The city is located on the western bank of the Red River, the principal river of northern Vietnam. Throughout the centuries authorities in Hanoi built dykes to protect the city from the instability of the Red River. Though these dykes were built at a high altitude, the floods became more intense due to the huge amount of alluvium that rests in the middle of the river and that could not continue to consolidate on the banks and making water levels higher and more dangerous. Furthermore, outside the dykes, in the riverine zones (which play a role as green corridors to connect the city and the river) economically disadvantaged people built settlements contributing to soil erosion (caused by illegal construction and excessive sand exploitation), subpar soil quality, and poor waste management. (1,2)

The Red River Zoning Plan (RRZP) came as a solution to address the issues before mentioned and has been promoted by the Hanoi People’s Committee. The plan is encompassing an area of about 11,000 hectares in 13 districts. The plan was approved by the Hanoi People's Committee in March 2022 at a size of 1/5000 section from Hong Ha Bridge to Me So Bridge. (1,4)

According to the concept, a 40-kilometre-long new metropolitan area would be created on both banks of the Red River. This urban space would be a flood drainage area for downtown. It will be designed with a green landscape including public spaces for cultural and tourism purposes. For this, the city would invest in a network of transport and technical infrastructure to bolster connectivity in terms of roads and waterways with neighbouring areas. Particularly, the RRZP is building three types of new parks near the riverbanks, including a nature conservation park, an agricultural park, and an urban park to improve climate change adaptation and bring more natural elements to the city. (1, 4)

The Upper Kinta River Basin covers an area of about 31,470 hectares above Ipoh City, and it is the main water catchment resource for the residents of the city and its surrounding areas. The Kinta river basin is now threatened by land erosion, land development, improper sewage treatment and irresponsible waste discharges (Ref 1). In 2021, a pilot project was implemented near the city of Ipoh along the SimpangPulai Highway and experimented with river bio-engineering techniques to reduce soil erosion and subsequently prevent sedimentation downstream (Ref 3). The pilot site was established as part of the Mainstreaming Biodiversity Conservation into River Management project, which focused on applying nature-based solutions for mainstreaming biodiversity into riverine landscape planning and watershed management in Malaysia. To provide seedlings for the bio-engineering project and also other related initiatives, a nursery was established in the indigenous Pawong Orang Asli Village. The nursery also provided additional income for communities (Ref 4). The pilot was developed with the expectation to be upscaled and replicated in other parts of the UKB, especially along the SimpangPulai Highway. (Ref. 6)

The International Cultural Garden Park (IC Park) is a comprehensive, private-sector-led, green development project in Yarmag, Ulaanbaatar, Mongolia. Initiated in 2021 by the Ikh Uilsiin Ereld Group LLC on its own property land as part of its social responsibility, the planned area covers a 35 hectares (86 acres) site. First, an international design competition was announced to plan the project. As a result of this competition, a contemporary park concept was developed for Ulaanbaatar's New Center to convey an international concept, with designs of significant cultural and historical elements from over ten different nations. The IC Park will also serve as a venue for a variety of international events, including conferences, sporting competitions, cultural festivals, and more. Green technology is being used with particular attention throughout the park's construction, and more than 90 species of trees and about 50 species of natural perennials growing in Mongolia are planned to be planted with the cooperation of professional tree planting and gardening organizations, specialists, researchers, and scientists. As of today, more than 7,000 trees have been planted in the project area, and professional personnel are diligently working on their care and pruning. The project is expected to reduce the negative consequences of global warming, create a greener environment, and secure long-term employment. (Ref. 1, 2, 4, 7)

As early as 2010, the then authorities of Malaysia announced plans to transform certain Malaysian cities into green cities. Motivations behind these actions focused on addressing environmental challenges such as carbon emissions, high temperatures, and a reconnection with nature. One of the cities where green ideas were to be implemented was Putrajaya, located 25 km south of Kuala Lumpur (Ref 3). As this is a very complex project, the initiative was being led by the Perbadanan Putrajaya (PPJ), which is a local authority that administers the Federal Territory of Putrajaya and is under the Federal Territories Ministry of Malaysia. In transforming Putrajaya into a green city, PPJ undertook 38% of its area to be developed into parks, lakes, and wetlands while the rest is reserved for government offices, commercial and residential development, public utilities, and amenities (Ref 1). Green actions involved the creation of a wetland (the largest constructed freshwater in Southeast Asia), the implementation of an Urban Farming Programme and Rooftop Farming programmes, as well as large-scale tree planting (Ref 2, 3). PPJ aims to transform Putrajaya into a green city by 2025 including Putrajaya Inter-Parks Ride, Pedestrian Walkways and Bicycle Lanes. Putrajaya’s efforts in the implementation of these green initiatives have received numerous awards & recognitions (Ref 3).

The project “Enhancing climate resilience of Gorakhpur by buffering floods through climate-resilient peri-urban agriculture” is part of the Asian Cities Climate Change Resilience Network (ACCCRN) and financed by The Rockefeller Foundation. It was implemented by the Gorakhpur Environmental Action Group (GEAG) from June 2012 to May 2016 to demonstrate how ecosystem services generated by peri-urban agriculture can positively address the impacts of climate change in Gorakhpur, a city located in eastern Uttar Pradesh, India (Ref 1, 2). To be more specific, it was set out to “demonstrate flood risk mitigation through the preservation and improved management of open spaces by strengthening agriculture-based livelihoods in peri-urban areas” (Ref 1, 2). The main project outcomes were focused on conserving peri-urban agricultural land areas as they serve to climate-proof cities and build resilience, enhance the livelihood and food security of vulnerable groups in peri-urban areas, as well as establish sustainable and climate-resilient models (Ref 1). Activities like baseline surveys, field interventions, climate resilient extension systems, the adaptation of practices and research and advocacy were carried out to achieve the project outcomes (Ref 1). Additionally, the project has successfully improved the soil and water quality and developed special measures for waste management (Ref 1, 2, 3).

The Misheel Botanical Garden is a large park located in Ulaanbaatar, Mongolia, established in 2021 along the Tuul River. The project was carried out by "Misheel Group" LLC in cooperation with public actors and more than 100 customer organisations, within the framework of social and environmental responsibility. The project cost 2.1 billion MNT and covers 110,000 square meters of green space, which was beautified without disturbing the native vegetation. The center aims to maintain and restore the ecological balance of flora and fauna, increase the flow of the Tuul river basin by planting trees each year, and provide citizens with more leisure and recreation opportunities. The botanical garden includes a combination of green-blue infrastructure and offers the opportunity for people to relax and expand their knowledge about a healthy environment. The center features a laboratory for students of natural sciences, a basketball court, a sand volleyball court, leisure areas for the elderly and infants, a dedicated sand area, and access for strollers and people with disabilities. The center also includes a terrace with a view of the Tuul River, where visitors can relax, and host events and activities throughout the year, including the winter.
[Source: Information provided by the management team of this project, Ref. 1, 5]

The Central Forest Corridor surrounds the capital of Honduras, Tegucigalpa, and provides various ecosystem services to the population, with a particular emphasis on providing water for communities within both the corridor and Tegucigalpa (Ref. 3). However, limited access to water is common across Honduras, attributed to the degradation of watersheds as a result of deforestation and pollution of both ground and surface water (Ref. 1). Climate scenarios further "indicate that existing water scarcity will be exacerbated by climate change and increasing variability"... with "the main urban areas (Tegucigalpa and San Pedro Sula) and several agricultural areas (Patuca basin)...fac[ing] increased water scarcity in the near future" (Ref. 1).

Mérida city developed a Municipal Green Infrastructure Plan (Plan Municipal de Infraestructura Verde), in order to "strengthen the green infrastructure system through planning, design and implementation of urban strategies at different scales of actions and projects that contribute to enriching ecosystem services in the public and private space of the Municipality of Mérida" (Ref. 1). The plan has four axes, providing a comprehensive and transdisciplinary approach to integrating nature-based solutions into city planning and the design of public spaces in order to provide climate change adaptation and mitigation benefits (Ref. 1).
The Mérida Green Infrastructure Plan shares strong ties with a state-wide strategy, 'Arborizando Yucatán', which promotes reforestation efforts across the 106 municipalities of the state in order to "help reduce the effects of climate change, have more areas green and a better climate for the benefit of current and future generations of Yucatecans" (Refs. 3 & 4). At both the municipal and state level, the relevant administrations (Mérida City Council and the State Government, respectively) have signed an agreement (Declaration for Mérida 2050), whereby both pledged to plant at least 200,000 native trees in the City of Merida, running alongside both the Mérida Municipal Green Infrastructure Plan and the Aborising Yucatán Strategy (Ref. 2).

South Africa is struggling to provide services to the millions of poor people migrating to the major centres and living in informal settlements (shanty towns), built on land that was formerly used for agriculture or pasturage. Vegetation is sparse and the open spaces between the houses are generally of beaten earth. These areas face persistent challenges that undermine health and everyday well-being and increased disaster risk due to their poor design and lack of green infrastructure. Moreover, informal settlements are very vulnerable to flooding events, which affect the quality of life of the people living in them. Such a case is Diepsloot, a settlement in Johannesburg, where a team of researchers implemented a sustainable urban drainage system with the purpose of alleviating poor water infrastructure and addressing issues related to land erosion and environmental degradation. This research has been benefiting from the support of the local population through adaptive co-management and joint implementation of the intervention. (1,2)