Sustainable agriculture practices to reduce energy use or carbon emissions

Kota Malang is a city for which urbanization coupled with climate change caused an increase in its vulnerability to the urban heat island effect. One of the solutions found to address this issue has been urban farming which has been recognised and acknowledged as a top strategy to improve cities' resilience associated with social and economic co-benefit. Nevertheless, urban farming inventory in Indonesia is still limited (1). Currently, there are 21 urban farming plots throughout Kota Malang, with 210 active urban farmers involved. The city has adopted this trend since 2013 as part of an initiative called Kawasan Rumah Pangan Lestari (Sustainable Food House Region) and the Initiative of Urban Farming Malang. Alongside the local government, the major stakeholder groups are the Department of Agriculture and Food Security of Malang, Family Welfare Empowerment (PKK) Malang and Bank Indonesia (BI) (Corporate Social Responsibility (CSR) program, which supports the local government in construction and development in Malang.
In Kota Malang, urban farming comprises five types of urban farming: nursery, allotment, residential, institutional and rooftop farming based on its characteristics (1). A recent report showed that urban farming could contribute to community resilience for feeding potential and nutrient sufficiency, especially for targeted populations with the highest risk during emergencies such as the COVID-19 pandemic. In the case of Kota Malang, the cultivation of specific vegetables could feed up to 50,000 inhabitants aged 60-64 years old (1, 2).

In 2017, the city of Jakarta initiated a peri-urban farming program under its Urban Agriculture Program that aimed to achieve sustainable agricultural production, rural economic sustainability and long-term environmental sustainability (1,4).
South Jakarta is one of the five administrative units that form Jakarta is a prosperous city with more than 2.2 mils. inhabitants. Industrial production as well as urbanization developed quickly in the city, leading to a steep increase in population. Meanwhile, the city experiences a reduction in agricultural land converted into settlements and industrial land, as well as soil deterioration. The city needs agricultural land for production and to establish food security. Furthermore, it needs to improve air pollution as well as oxygen provisioning. As such a solution had to be found (1).
To implement the program a total of 12 communities in the South Kebayoran Lama subdistrict of South Jakarta participated in implementing and operating urban farms. One of these communities has been the Kebayoran Lama Selatan Urban Village managed by Seruni Indah Farmers Group (Kelompok Tani Seruni Indah) which is a very successful example of sustainable organic urban farming supporting more than 3500 residents. The engagement consisted in using vacant and private yard land for horticultural crops (vegetables, fruits and ornamental plants), spices, medicines, herbs etc. through hydroponic and conventional practices that could benefit the community and the general public. 15 gardens have been implemented with funding provided by the Indonesian government (3, 7).

Rajshahi is a Bangladeshi metropolitan city located on the north bank of the Padma river. The city has seen, throughout the years, an increase in greenhouse emissions and maximum temperatures as well as a decrease in open spaces from 11.09% to 4.5%. To counteract many of these challenges, the Rajshahi City Corporation (RCC), with support from ICLEI South Asia and UN-Habitat implemented an initiative called the Urban-LEDS II, which was designed to help cities to adopt a low-emission development approach. (Ref 2)

The project's approach included support for better management and maintenance of Rajshahi's open green spaces, as well as an objective of raising awareness among stakeholders about the region's biodiversity and the ecosystem services it provides and promoting outdoor activities. (Ref 1)

The activities included in the approach were two-folded. One of them targeted the greening of the Rajshahi’s Kolpona-Talaimari river embankment through tree plantations on the slopes and was seen as a demonstration pilot for a bio-diverse plantation scheme. The project implemented a pilot-scale plantation employing native and introduced plant species, as well as maintenance, contracting out to a nearby nursery (Ref 1, 2). The other approach included an increase in public awareness and advanced conservation, hence common trees were identified and documented in a graphic guide. Mapping of the trees of Rajshahi called the Natural Asset Map, and a Pictorial Tree Handbook for its citizens in order to improve and better manage their urban green spaces and biodiversity were conducted. Maps of Rajshahi's natural resources have been created for the entire city as well as for each of its 30 administrative zones. ( (Ref 1, 2)

It was expected that through these actions, Rajshahi would contribute to Aichi Targets 1, 2 and 17; and Sustainable Development Goals (SDGs) 11, 14, and 15 (Ref 3).

Senegal, like many other West African countries, is in an unprecedented position when it comes to the threats climate change poses. Climate scientists predict that the country will likely experience increased temperatures, decreased annual rainfalls, a rise in sea levels, and an increased frequency of heavy rainfall events. Automatically these events will change drastically the social and economic structures of the country and are reasons for concern for the people of Senegal and their government. For example, the city of Thiès is in an area where environmental degradation is very advanced. The tree cover is in a situation of extreme fragility due to tree ageing or abusive tree cutting. To address many of these concerns, the city of Thies is trying to become sustainable through the development of green spaces that are expected to restore the city's ecological dimension and contribute to the reduction of greenhouse gases and the improvement of the living environment. (1,2)

The Sustainable Residential Complex project was a measure taken by the city of Dubai, one of the largest city ecological footprints, with a goal to reduce it to the smallest ecological footprint by 2050. For the past two decades, the UAE government has made an effort to lower its own dependency on fossil fuels, shifting toward more environmentally-friendly sources to power its cities. The sustainable residential complex development project is one of the few initiatives taken by the city administration of Dubai under Vision 2021. Located just outside Dubai the area is the first operational net-zero energy residential complex in Dubai. [1, 2]

From 1998-2002 Argentina went through an economic depression, which began after the Russian and Brazilian financial crises, caused widespread unemployment, riots, the fall of the government, and a default on the country's foreign debt. Rosario, the third-most populous city in the country, was not a stranger to the crisis' effects as many of its inhabitants were now living under the poverty line. Coupled with this, climate change was heating up the city and making rainfall more erratic, leading to both flooding in Rosario and fires in the nearby river delta. To tackle urban inequality and climate change the Municipality of Rosario developed a program called "Urban Agriculture Program" which aims to give low-income residents access to underutilized and abandoned public and private land to cultivate food. Over the years, the municipality evolved the program into a cornerstone of its inclusive climate action planning. (1)

The city of Algiers initiated in 2010 a project in order to establish a green belt around its areas and some northern municipalities. The project aims to create agro parks, allotment gardens as well as parks as a strategy for reintegrating the concept of the green belt into the Algerian territory. Through this intervention, the municipality aims to put into practice environmental values ​​linked to improved quality of life and social well-being, for the benefit of the local community. The intervention plans to introduce different species of trees and include for the first time in Africa agro parks as spaces which are designed to reconcile urban and agricultural functions in a win-win strategy. The action was thought to respond to the impacts of climate change in the country, which faces rain events that are less frequent but more intense, and droughts that are more common and longer. (1,2,3,4)

The Gar'den is a Provencal garden and a vegetable garden of permaculture, both a relaxing space and a participatory garden. Indeed, everyone will be invited to participate in the life of this Gar'den, common good to protect. Young and older will be able to discover the Provencal vegetable treasures and relax in a space devoted to the sharing of goods and knowledge. (Ref. 11)

The agriparc of the Mas Nouguier is an agricultural reserve entirely maintained by the city of Montpellier. Conducted in organic agriculture, the estate contributes to the preservation of the identity of the territory and to the valorization of the living environment. Accessible to all, it offers a beautiful walk in the middle of the vineyards. Apiaries are used to develop educational workshops and to collect honey with school children. Olive trees, centennial pines and a large meadow come to embellish this little bit of countryside in town (Ref. 1).