System innovation

The ‘City of 1,000 Tanks’ project offers a holistic solution to the problems of floods, water scarcity and pollution in Chennai (Ref. 1). The project's primary objective is to develop a "Water Balance Model" for the city, which involves collecting rainwater, treating wastewater and runoff pollution with decentralized nature-based solutions, as well as prevent climate-change-induced droughts and saline intrusion due to sea-level rise (Ref. 1, 2). This is achieved through developing various nature-based water management solutions and improving the recharge capacity of traditional temple tanks (Ref 1).
The project began in 2018, following the call for action event of the "Water as Leverage for Resilient Cities Asia" (a bilateral program spanning several Asian countries). The Water Balance Model is developed as a strategy with an incremental implementation process (Ref 1, 2). The project started with pilot projects and then progressed to flagship projects before full city-wide implementation (Ref. 3).

In 2008, Mahidol University in Thailand announced its revised five-year Green Campus master plan titled 'A Promised Place to Live and Learn with Nature' for its main Salaya Campus. The scheme aimed to promote a green conscience and lifestyle for its students and faculty through sustainable campus developments that consider social and environmental aspects. The university's objectives were to achieve energy conservation, environmental sustainability, and social cohesion and well-being. The main features of the master plan included the creation and maintenance of green open spaces covering at least 70% of the campus premises, optimization of land use, transformation of infrastructure to encourage cycling, creation of outdoor learning, recreational and research areas, and enhancement of local biodiversity. The master plan also covered guidelines and targets for energy consumption, waste, and water management in the campus buildings. The Siri Ruckhachati Nature Park, the university's arboretum, was also redesigned with green and blue areas playing a role in flood management. Following the 'Green Campus' master plan, Mahidol University developed its existing mission further and became an 'Eco University' in 2012 and a 'Sustainable University' in 2021. These two missions focus primarily on reducing energy consumption and waste management.
(Ref.1,2,3,12)

The Bakhawan Eco-Park is a 220-hectare mangrove forest located in Kalibo, Aklan province, Philippines, that started as a reforestation project in 1990. It was a joint project of the local government and a non-government organization, Kalibo Save the Mangroves Association (KASAMA), with the aim of reforesting the muddy shoreline of New Buswang district to protect the community from floods and storm surges [1,2]. Aside from preventing floods, the eco-park also provides locals with livelihood opportunities, mitigates the effects of climate change, and serves as a habitat for various mangrove tree species, birds, and marine life [1,2]. The project's success is largely attributed to the active involvement and support of the local community, with some families playing an integral role in the reforestation program. [2] Notably, the involvement of local women in the NBS initiative has contributed to the success of mangrove conservation. Some women have also taken on the task of policing the mangroves to prevent illegal tree-cutting by trespassers [4]. Today, the eco-park is acknowledged as one of the most successful mangrove reforestation project in the Philippines [1]

The National Garden Park is the largest park in Ulaanbaatar and the only park of its kind in the capital city of Mongolia, offering multiple environmental services, recreational and commercial functions. Currently, the park extends to 183 hectares, covering 23% of the total green construction in the city, and stretches from the northeastern part of the Marshall Bridge to the Uliastai Bridge in the Bayanzurkh district. In the long term, the park is planned to be extended to have a total area of 973 and to have 1.200.000 trees planted within the “One Million to One Billion” afforestation program. The park offers a range of recreational facilities and services for citizens, including bicycle and pedestrian areas, specialized sports areas and children's playgrounds. It also houses trade and service organizations. As a result, the park has become a popular recreational area for the citizens of the capital and is the most visited urban park in Ulaanbaatar. During the summer, it attracts an estimated 12-15 thousand visitors a day, and during the winter, it sees 6-9 thousand visitors a day. The National Garden park was officially established in 2009 with the aim of protecting the Tuul River Basin's drinking water source, reducing air pollution, and increasing green space to create a healthy eco-environment and providing recreational opportunities for the public. In 2016, the National Garden Park was designated as a local property budgetary enterprise with defined primary functions, management structure, control, and rights under the administration of the Assembly of Citizens' Representatives. The park currently employs 113 staff members (as of 2021). (Ref. 1. and 4)

The Chiangmai urban farm was developed on a former landfill site in the Chiangmai city centre area. The project was initiated by a local community architecture studio and supported by various groups of the local NGOs, civic groups and the local government. The project began in the middle of the COVID-19 pandemic, aiming to help vulnerable people in the communities nearby the site to increase food security, improve nutrition and build a self-sufficiency lifestyle. Moreover, the urban farm is designed to be a ‘public space’ that connects people from different backgrounds through agriculture. The Farm consists of various garden plots ideal for short-harvest and long-harvest species, a chicken coop, a plant nursery and a storage area. Knowledge sharing and capacity building are other goals of the project. Accordingly, training and workshops are organised in the bamboo pavilion of the garden. Since its establishment, the urban farm provides the local community with farming and learning opportunities and a space to socialize. The financial background of the project was provided through fundraising and the efforts of volunteers who developed this project into a self-sustaining farm without relying on donations. (Ref.1,2,4,9)

As an archipelagic state, Indonesia consists of 18,000 islands and 18,000 km of coastline, which is inhabited by more than 60% of the Indonesian population. Its geographical position exposes the island country to several climate change challenges, ranging from an increase in high temperature to a sea level rise and severe floods. One of the cities affected by flash floods, flooding, and landslides is Pekalongan City, crossed by 7 rivers and home to approx. 300,000 people. Inundations can reach 50-100 cm in many communities, causing distress, evacuations, and severe damage to infrastructure and food security as well as loss of income for the inhabitants that work in the fisheries sector, in the Batik industry (the process of traditionally dyeing fabric, performed on cotton and silk using a resist technique) or in paddy rice farming. (1)

Responding to the climate risks became of utter importance to the municipality of Pekalongan City. To help the Municipal Government of Pekalongan City to overcome the problem caused by climate change, Kemitraan (Partnership for Governance Reform in Indonesia), an implementing and advocacy NGO developed the project on Safekeeping-Surviving-Sustaining towards Resilience, a 3S Approach. The aim was to Build Coastal City Resilience to Climate Change Impacts and Natural Disasters in Pekalongan City, Central Java Province. This was approved on 29 October 2020 and is currently entering its implementation phase. The project will focus on building resilience to climate change impacts with interventions of hard and soft nature. More precisely, the project aims to build capacity and resilience through training, mangrove ecosystem restoration and enhancement of coastal protection, and development of a Local Climate Adaptation Action Plan and implementation of climate-smart actions (1,2). The project aims to reach these goals by employing a collaborative and participatory approach that is locally driven and involves those most at risk. The program is expected to end in April 2023 (1).

Jin wellbeing is a senior-oriented lifestyle complex in Bangkok, Thailand, which comprises residences, commercial units and hospitals. The first phase of the development has been completed in 2020. This phase included five residential buildings with senior hospitals, wellness centres and green spaces that cover over 40% of the site. The project aims to create a sustainable living environment while enhancing both the physical and mental health of the people through nature with the “Community of Revine Forest” concept. The main interventions include an urban forest, a therapeutic garden, a community farm, an outdoor exercise area, and a multipurpose area. Ecologically sustainable design has been integrated into the planting strategies and water management to create a resilient ecosystem, mitigate flood and improve water retention capabilities of the area for irrigation purposes. (Ref. 1,2,3,4,5)

Penang is a state located in north-western Peninsular Malaysia with an area of 1,049 km2. It comprises two local authorities, Penang Island and the mainland. The former is further divided into five administrative districts which are further divided into mukims (sub-districts). Two urban mukims located on the island – George Town and Bayan Lepas – are the focus of the proposed nature-based solutions (NBS) climate adaptation programme. The programme was launched in 2022 by UN-Habitat in collaboration with the Ministry of Environment and Water (KASA) of Malaysia, Penang Island City Council (Majlis Bandaraya Pulau Pinang - MBPP), Department of Irrigation and Drainage (Jabatan Pengairan Dan Saliran - JPS) and Think City (a wholly-owned subsidiary of Khazanah Nasional Berhad (the sovereign wealth fund of the Government of Malaysia)). (Ref 1)

The implementation of the project responds to several challenges posed by climate change including heatwaves and flooding (Ref 4). The main goal of the programme is to enhance urban resilience and reduce human and ecosystem health vulnerability to climate change impacts and extreme weather events by implementing nature-based solutions (NBS) such as tree-lined streets, pocket parks, green parking spaces, green facades and rooftops, urban agriculture and blue-green corridors to reduce surface temperatures and stormwater runoff, as well as to increase social resilience and build institutional capacity (Ref 1, 3).

Benchakitti Forest Park was created as the extension of the existing Benchakitti Water Park, which is located near the central business district of Bangkok, Thailand. The Forest Park is built in an old Thai Tobacco Factory area. The main concept of the park is to bring the forest into the city and support urban biodiversity while offering leisure activities for the people. The main features in this project include constructed wetlands, nature learning and exercise trails (for running and bicycling), a learning centre, an urban farming area and multipurpose open space for gathering and event activities. Benchakitti Forest Park can be divided into 2 parts. The first part is a green outdoor area including the wetlands, all trails and an outdoor amphitheatre. This first part was completed and open to the public in 2022. The second part is the renovation of buildings into museums and the creation of an urban farm and other facilities associated with the building. This second part is still under construction. (Ref. 1,2,3)

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).