Research & reports

Marie-Soleil L’Allier · Revue Possibles · Global

In recent years, citizen-led agricultural and food innovations, such as urban agriculture, community gardens, collective greenhouses, and food cooperatives, have proliferated. These initiatives operate on a logic distinct from the globalized food system, forming the seeds of a post-growth society that does not depend on economic growth. This study raises the question of how to ensure these social innovations, while holding significant transformative potential, can effectively outline an ecological transition for our food system.

Muhammad Asadullah, Shahbaz Nasir Khan, Hafiz M. Safdar, Rana Ammar Aslam, Imran Shaukat · Earth Sciences Pakistan · Global

A review paper on aquaponics, a closed-loop system combining hydroponics and aquaculture, framed as a sustainable-technology response to soil, air and water pollution, global warming, food shortages and droughts. It notes that many studies have focused on small-scale farming for education and indoor decoration rather than commercial urban-scale food production, and highlights how trickling biofilters and plant uptake of aquaculture wastewater improve water and nutrient use efficiency. The paper identifies the central sustainability challenge as balancing optimal organism growth and maximum production output against minimizing effluent discharge to the environment.

Marcela Patricia Galindo Toloza, Brandon Steven García Rodríguez · · Colombia (Bogotá)

This project proposal addresses the San Germán neighborhood in Bogotá, Colombia — located between the Usme and San Cristóbal localities on the upper slopes of the Entre Nubes ecological district park in the city's southeast, an area designated as protected land since 2000 under the city's land-use plan (POT). The Integral Improvement Plan (PMI) aims to provide an architectural, urban, and environmental solution to the neighborhood's problems by structuring an alternative for recovering the existing urban fabric in relation to the informal settlement that developed there over time, through rehabilitation and landscape regeneration. The PMI is designed to minimize the physical, environmental, and legal impacts caused by informal occupation, which has degraded residents' quality of life and disarticulated the neighborhood's urban structure from the wider city. It implements an "Ecobarrio" (eco-neighborhood) strategy incorporating design for different modes of mobility, prioritizing bike paths and pedestrian trails, applying integral-improvement treatment to existing construction where possible, recovering disused areas, and designating a zone for urban agriculture — elements intended to work together to regenerate the sustainability and livability of the San Germán community.

Joshua P Newell, Anu Ramaswami · Environmental Research Letters · Global

An editorial (2020, no specific region) introduces a focus issue on the food-energy-water (FEW) nexus in urban areas, noting that with most of the world's population now living in cities, cities drive global flows of food, energy, and water. The eight papers in the issue are described as interdisciplinary, multiscalar, and cross-sectoral, examining how FEW interactions affect the health of cities and their inhabitants as well as the distant people and places from which resources originate, covering topics including a review of existing urban FEW research and promising approaches, urban agriculture and energy-water dynamics, conventional agriculture and FEW dynamics, and the energy "foodprint" of the American diet. The editorial identifies four areas needing further research: ecosystem services tied to urban agriculture, resource recovery in the urban FEW nexus, equity/social actors/governance of the FEW nexus, and the food-energy-water-health nexus.

Helena Kahiluoto · Food Security · Global

An essay written during the pandemic argues for food system resilience, proposing that co-designing contrasting future narratives and developing tools to build adaptive capacity strengthens preparedness for shocks. It contends that supplier-buyer diversity matters most in market-led global food chains, while farm and crop diversity matters more in publicly protected regions, in responding to variability in weather, price and policy. During events such as international conflict or a pandemic, diverse food sourcing -- from local producer-consumer cooperatives to community-supported and urban agriculture -- could help secure food for citizens. The piece presents no empirical data or case analysis.

Siv Lene Gangenes Skar, Rocío Pineda‐Martos, Axel Timpe, Bernd Pölling, Katrin Bohn, Mart Külvik, Cecília Delgado, Celestina Pedras, Teresa A. Paço, Mirjana Ćujić, Nikolaos Tzortzakis, Antonios Chrysargyris, A. Peticilă, Gitana Alenčikienė, Hendrik Monsees, Ranka Junge · Blue-Green Systems · Global

This article discusses urban agriculture's role in creating sustainable and climate-friendly cities, drawing on 20 years of research and practice. It highlights that urban agriculture can minimize climate change effects and improve urban quality of life. Effective land use and spatial planning are crucial for establishing food production sites within cities, integrating resource streams like water, waste, and energy.

Celina Gómez, Christopher J. Currey, Ryan W. Dickson, Hye‐Ji Kim, Ricardo Hernández, Nadia Sabeh, Rosa E. Raudales, Robin G. Brumfield, Angela Shaw, Adam K. Wilke, Roberto G. López, Stephanie E. Burnett · HortScience · Global

This review discusses the application of controlled environment agriculture (CEA) techniques to urban agriculture (UA), driven by increased market demand for local produce. While CEA offers opportunities for year-round production and resource-use efficiency, significant challenges remain due to the high costs of production in urban settings. The review emphasizes that for urban growers to benefit, studies evaluating CEA for commercial food production must consider economic viability.

Jha Ritesh Kumar, Bhattarai Natasha, KC Suraj, Shrestha Arjun Kumar, Kadariya Manahar · Malaysian Journal of Sustainable Agricultural · Nepal

This research inspected existing practices and obstacles in rooftop farming in Nagdhungha and Birauta, Nepal. Two practitioners were interviewed and 60 non-practitioners were surveyed. Results show that rooftop farming can benefit the environment by reducing atmospheric carbon and assist urban areas by reducing stormwater management costs, with a high willingness to practice rooftop farming among urban dwellers.

Alessio Russo, Giuseppe T. Cirella · Humanities and Social Sciences Communications · Global

This comment examines "edible urbanism 5.0," noting that urban and peri-urban agriculture can have negative effects on city ecosystems, which urbanists and planners have largely overlooked. It highlights the need for a concept that considers trade-offs between ecosystem services and disservices, especially given current unsustainable industrial intensive farming. Edible urbanism aims to integrate food security, resilience, and social inclusion through edible green infrastructure and modern food production.

Martin Stuchtey, Tilmann Vahle · OpenEdition (OpenEdition) · Global

This paper discusses different types of urban agriculture (UA) to assess its potential for future food production. Conventional open-air farming is found to be rarely commercially viable for meaningful food production, though it offers community, educational, psychological, and environmental benefits. High-yielding Controlled Environment Farming (CEF), while potentially contributing substantially to food output, is highly capital and knowledge-intensive and likely to develop at city fringes due to economic considerations.

Youcan Feng · IntechOpen eBooks · Global

This chapter summarizes current research progress and challenges regarding the benefit, measurement, and simulation of evapotranspiration (ET) from green infrastructure (GI). ET is crucial for GI's hydrologic performance and related benefits, but classic ET equations struggle to represent variations due to urban spatial heterogeneity and GI's multi-layer designs. The underperformance of existing ET models is partly attributed to a lack of high-quality field observations for various GI types in urban settings.

Benz Kotzen · · Global

This paper argues that vertical cities, integrating biophilia, could address the challenges of increasing global and urban populations. It suggests that these megastructures, which can include green spaces and urban agriculture, offer a compact footprint that allows for increased nature and farming in adjacent areas. While individual megastructures exist, the concept of a full vertical city has not yet been realized.

Loïc Couttelle · OpenEdition (OpenEdition) · Global

Veolia is exploring new urban and peri-urban agricultural production systems to address regional challenges like soil sealing and climate change. Through an innovative experimental approach with partners, an intensive and high-quality agricultural model combining aquaponics and bio-intensive vegetable microfarming has been identified. These solutions, located on available land, aim to provide ecosystem services, efficient production, and respond to consumer demand for short supply chains and traceability.

A. Pardini, Furio Massolino, Chiara Grassi · DOAJ (DOAJ: Directory of Open Access Journals) · Global

In urban agriculture in developing areas, Opuntia ficus-indica (L.) Mill. is a promising strategic species due to its low water and soil fertility requirements and its edible entirety. This study conducted a trial comparing the initial productivity of cladodes multiplied in pots, car tires, and open fields. Results suggest that the prickly pear can be cropped better in large exhausted tires than in small plots, also saving money on materials.

· International Journal of Recent Technology and Engineering (IJRTE) · Global

Unplanned urban expansion leads to the conversion of farmland, causing urban environmental degradation and food security concerns. This paper analyzes the correlation between urban farming and supporting food demands in urban areas. It further discusses critical challenges and opportunities for promoting urban farming as a significant tool for encouraging balanced sustenance in urban areas.

Maurice Dasylva, Ngor Ndour, Bienvenu Sambou, Sara Danielle Dieng · European Scientific Journal ESJ · Senegal (Ziguinchor)

In Ziguinchor, Senegal, the peri-urban rice farming system contributes to food security but is ignored by decision-makers and suffers from urbanization and physicochemical changes in rice field soils. An agronomic diagnosis, based on 180 yield squares (1/4m side) installed in 4 peri-urban valleys, showed average yields of 4.79 ± 0.35 t.ha-1. However, urbanization, silting, acidification, and progressive salinization of soils are the main limiting factors for this production system.

Emmanuel Patroba Mhache, Elna Lyamuya · Huria Journal of the Open University of Tanzania · Tanzania (Dar es Salaam)

This review paper examined the role of urban agriculture in alleviating poverty for women in the Dar es Salaam Region, Tanzania. It found that women's participation in urban agriculture contributes to food security, increases household income (average net income Tshs 58,356.2 per month), offers employment, and reduces poverty. However, numerous bottlenecks hinder women's involvement in urban agriculture, including poor markets, water shortage, land shortage, seed unavailability, lack of capital, lack of government support, crude working tools, lack of water pumping machines for irrigation, poor storage facilities, and lack of agricultural extension services.

Ana Cristina Teixeira Alves, Miguel Nenevé · International Journal of Advanced Engineering Research and Science · Cuba

This study addresses the benefits of agroecology, using Havana, Cuba as an example. Following the 1989 socialist crisis and economic blockade, urban agriculture emerged as a social movement in Havana. Through sustainable practices, this movement demonstrates success in generating jobs and income, as well as enhancing food security and sovereignty. Production, technical assistance, and sales outlets are steadily growing, supported by the government through an ecological and efficient low-cost agricultural policy that combines traditional knowledge with cutting-edge technology.

Debbie Méndez, Julio Quintini · · Austria (Vienna)

This project proposes a simple 7-step methodology for urban agriculture, based on the experience of a Venezuelan family participating in a community garden in Vienna, Austria, for two years. The methodology aims to enable urban residents to create sustainable communities, improve nutrition with fresh produce, and generate economic gains and better quality of life. It draws on successful urban agriculture experiences globally and aligns with Sustainable Development Goals 2, 11, and 13.

Llanos Roa, Juan Sebastián · · Colombia (La Guajira)

The Awarala Project in Albania, La Guajira, Colombia, aims to create a resilient region by reducing dependence on mining and gasoline smuggling. It seeks to benefit indigenous communities, urban populations, farmers, and Venezuelan immigrants by improving living conditions through eco-rancherias with community gardens and providing spaces for tourism and alternative energy production. The project includes 15 hectares of solar panels, 30 wind turbines, and biodigesters for organic waste.

Monika Egerer, Brenda B. Lin, Dave Kendal · Climate · Global

Habitat-scale temperatures were investigated in urban community gardens across the California Central Coast metropolitan region, USA, and the Melbourne metropolitan region, Australia. Despite very similar annual means, strong interregional differences in temperature variability were shown, likely due to differences in the scale and scope of temperature measurements and regional topography. The plants growing within these systems were largely the same, which may be due to gardeners' capacities to adapt their gardening behaviors to reduce adverse effects of local temperature variability.

M. W. Adidja, Julius Mwine, J. G. M. Majaliwa, Joseph Ssekandi · Asian Journal of Agricultural Extension Economics & Sociology · Global

This review synthesizes agro-ecology's contribution to sustainably solving global hunger. Agro-ecology increases food availability through augmented yields and urban agriculture, enhances accessibility by reducing poverty, and improves appropriateness with high-quality, healthy food. It also contributes to water and food security by lessening pressure on water resources, increasing resilience to climate change, and empowering peasants and women.

Stavrianakis, Farmer · Children Youth and Environments · Global

This study investigated the impacts that gardening education workshops in community gardens can have on family members and their environmental behaviors. Participants reported a variety of positive impacts from the gardening workshops, including socializing, health benefits, and acquired knowledge. However, there was limited evidence of pro-environmental behavior change beyond gardening.

Rayeheh Khatami, Toktam Hanaei, Mohammad Reza Mansouri Daneshvar · Zenodo (CERN European Organization for Nuclear Research) · Iran (Mashhad)

This paper analyzed the impact of urban agriculture and urban food systems on environmental planning in a non-western city region context, using Mashhad city, Iran, as a case study. Employing qualitative approaches, a survey of documentary studies and planning tools integrated with face-to-face interviews with experts explained the role of the food system in the environmental planning process. The study examined the role of food in creating agricultural gardens as a means to improve the agricultural system in a non-western country.

Nenad Židak, Nidžara Osmanagić Bedenik · The holistic approach to environment · Global

This paper investigates whether urban gardening is a fashion trend, utopia, or the future, using an integrative approach. Employing The World Café Method with experts in biology, chemistry, and geography, the research compared these three aspects. Results indicated that the future aspect of urban gardening holds a primary and dominant role, despite fashion and utopia providing interdisciplinary impulses.