Research & reports

Corrie Hannah, Jordan Blekking, Julia Davies, Jane Battersby, Allan Chilenga, Dorcas Kabuya, Percy Toriro · Ecology and Society · Zambia

This empirical case study examined how the COVID-19 pandemic affected urban food systems (UFS) in 14 Zambian cities, using household survey data from 2019, 2020, and 2021. Descriptive and regression analyses assessed household food sourcing, including urban agriculture. Households from diverse socioeconomic quartiles faced similar food security challenges but coped differently based on capacities and resources, indicating a lack of equitable outcomes. Smaller and remote cities sourced food from open-air markets, vendors, and urban agriculture, while more connected cities used local shops.

Daniel Borer, Daniel Fuller, Manjit Singh Sandhu, Duy‐Tung Bui · Social Responsibility Journal · Global

This conceptual paper introduces the Pancentric Nutrition Paradigm, an interdisciplinary framework integrating human nutrition, environmental sustainability, animal welfare, and societal considerations for global food systems. It identifies four strategies for sustainable food systems: implementing urban agriculture and agro-zoos, introducing a meat carbon tax (€0.10 per kg CO2e), promoting ostrich farming, and developing policy pathways. The study suggests the pancentric approach can harmonize competing interests in food systems.

E.N. Jenkins, John M. Galbraith, Anna Paltseva · SOIL · Global

This study conducted a literature review of 84 publications to evaluate the accuracy, precision, and practicality of Portable X-ray fluorescence (PXRF) as a tool for analyzing heavy metal contamination in urban soils. Urban soils often face contamination with heavy metals like lead and arsenic, and PXRF was shown to achieve reliable accuracy when properly calibrated. PXRF emerges as a viable method for assessing urban soil contamination.

李　錦東 · Institutional Repositories DataBase (IRDB) · Japan (Kitakyushu)

Kitakyushu City has faced challenges due to continuous population decline and aging since the 1980s, while some shrinking cities abroad have used urban agriculture to solve local issues. This study conducted a questionnaire survey targeting Kitakyushu citizens to clarify the current status and needs regarding their urban agricultural activities. The research aims to provide considerations for promoting urban agricultural activities in Kitakyushu.

Anwesha Chatterjee, Proma Ghosh, Bastian Winkler, V Vijayaragavan, Sanjit Debnath, Jedrzej Cichocki, Marielle Trenkner, Bilitis Vanicela, Christoph Riethmueller, Monte Walz, Suhrid Chandra, Harshata Pal · Scientia Horticulturae · Global

This in-depth review explores the integration of hydroponics cultivation systems, reinforcing bioeconomy and sustainable agricultural growth. Hydroponics is a promising urban farming approach due to its high resource-use and land-use efficiency, enabling year-round production of high-quality fresh foods with less water, nutrients, and pesticides compared to soil-based methods. Recent studies focus on optimizing hydroponics for biofortification in indoor cultivation and integrating municipal wastewater treatment for nutrient and water recovery.

Emmanuel Ndhlovu · Discover Sustainability · South Africa

This article critically analyzed food system policies and actions in four South African cities, drawing from grey and academic documents. It found that the government is failing to achieve food security, with approximately 58 million people facing food insecurity in 2023. The study concludes that transforming South African food systems requires coherent policies, shortened supply chains, integration of food into urban planning, and increased support for farmers, among other actions.

M.M. Rasmuna, VGR Chandran, Keshminder J.S. · PLANNING MALAYSIA · Malaysia

This research analyzed commercial urban agriculture (CUA) models in Malaysia using the Business Model Canvas to understand their sustainability. The study found that Malaysian CUA primarily employs low-cost specialization, differentiation, and diversification strategies, including organic branding and targeting upscale consumers. Urban farms also diversify revenue through educational programs, food experiences, and leisure activities. A direct link was established between a farm's geographic location (urban vs. peri-urban) and its value proposition strategy, indicating the importance of spatial planning for CUA success.

Paule Moustier, Jacques Pagès · HAL (Le Centre pour la Communication Scientifique Directe) · Africa

This study examined peri-urban agriculture in Africa, identifying it as a significant income and food source for the urban poor, but subject to constraints, primarily land pressure. Analysis of the vegetable supply chain in Brazzaville showed rural and peri-urban areas are complementary, with different types of vegetables originating from each. Land constraints, transport, access to inputs, and technical assistance are crucial factors determining production location. Historical analysis invalidates hypotheses of linear decline or development through intensification for peri-urban agriculture.

Marcus Robinson, Jacky Bowring, Shannon Davis, Sarah Edwards · Landscape Research · Global

This narrative review explored how urban expansion at the rural-urban fringe drives the loss of productive agricultural land, biodiversity, and ecosystem services. The review examined how these competing interests can be negotiated spatially, emphasizing the role of multifunctional green infrastructure to integrate both food production and ecological function across the urban-rural continuum.

Mattias Öbrink, Maria Paring · META – Historiskarkeologisk tidskrift · Sweden (Gothenburg)

This text presents an excavated area in the southernmost part of Nya Lödöse, Sweden (Gothenburg), which existed between 1473 and 1624. Excavations conducted between 2022 and 2023 revealed an area with fewer houses and several gardens, contrasting with the densely built-up northern part of the town. The area may have served as both a food supply resource and a land reserve, and the text discusses possibilities and challenges in studying urban gardening, including cultivated soil and land division.

Juan Camilo Fontalvo-Buelvas, María Teresa Pulido Silva, Miguel Ángel Escalona Aguilar, Raúl Romero Ramírez · Memorias · Mexico (Xalapa)

This diachronic study analyzed the drivers and inhibitors of urban agriculture in Xalapa, Mexico, through a historical tracing from 1821 to 2023. Drivers included rural immigration, academia, and government programs, while inhibitors were identified as diversification of trades, ejido laws, remittances, health policies, and food markets.

Vidushi Dhaliwal, Deven Verma, Durlabh Durlabh, B. Sharma, Yaman Kumar, Vishal Thakur, Kunal Soga · Journal of Applied Horticulture · India

This study evaluated the growth and yield parameters of different potato varieties grown in grow bags suitable for the North Indian Plains. Cultivated in grow bags with a soil, vermicompost, and cocopeat mixture (4:3:1), Kufri Chandramukhi yielded the highest (1037.50 g/bag) under Punjab conditions, followed by Diamond (908.26 g/bag). Kufri Chandramukhi successfully adapted to the constrained environment without pests or diseases, and the soil mixture helped increase tuber yield and decrease irrigation intervals.

Mar Loren-Méndez, Celia Chacón-Carretón, Pablo Manuel Millán Millán · ACE Arquitectura Ciudad y Entorno · Spain (Málaga)

This study examines the urban dimension of agricultural heritage, specifically urban orchards, in cities where agrarian activity is deeply intertwined with their origin and evolution. Using Nerja, Málaga, Spain, as a case study, the research highlights that accelerated urban transformation in recent decades has led to a rupture, undermining agrarian logic by abandoning historical growth practices. The study emphasizes the fundamental role of agrarian activity in built environments and advocates for the protection of urban orchards.

Chris Blythe, Veronica Barry · · United Kingdom

This chapter examines urban farming and growing in the United Kingdom, advocating for a broader definition beyond purely productive practices to include social, political, and environmental interpretations. It explores how physical spaces in four Birmingham examples foster social interaction, drawing on practitioner experience, literature, and user perspectives. The aim is to provide insights into the value of these spaces as social landscapes for urban policy.

M. J. Ni, Shuai Yan, Ting Li, Zijun Zhou, Xiaojing Liu, Shirong Zhang, Guiyin Wang, Xiaoxun Xu, Yulin Pu, Yongxia Jia, Lan Li · Ecotoxicology and Environmental Safety · China (Chengdu)

This study investigated heavy metal (HM) contamination in urban and peri-urban agricultural soils of the Chengdu Plain, China, using an integrated multi-model approach. Four major HM sources were identified, including natural (30.0%), mixed agricultural and transportation (29.5%), metal smelting (19.4%), and atmospheric deposition (21.1%). Risk assessments revealed that Cd and Hg posed the highest ecological risks, and human health risk assessment indicated unacceptable health risks for children, with non-carcinogenic and carcinogenic risk probabilities reaching 4% and 10% respectively.

YUKUN, HE, HE, YUZHONG, Kiyoyama, Yohei, Ishida, Shigeyuki, Hama-cha Co-Creation Team · Zenodo (CERN European Organization for Nuclear Research) · Japan (Kyoto)

This paper documents a 2024–2025 field practice concerning Hama-cha, a traditional tencha in Kyoto, which faces threats from labor aging and persistent operational difficulties. Researchers encountered challenges in accessing tacit knowledge and identifying clear solutions for labor shortages, despite both farmers and researchers recognizing the problem. The study highlights the ongoing operational difficulties and lack of clear solutions for the economic viability of this traditional urban agriculture practice.

Emoke Dalma Kovacs, Melinda Haydee Kovacs · Horticulturae · Romania (Cluj-Napoca)

This study in an urban orchard in Cluj-Napoca, Romania, investigated how five Prunus species and soil depth (0–30 cm) affect microbial biodiversity and metabolomic signatures using 225 soil samples. It found significant tree species-specific effects on soil microbial biodiversity, with bacterial biomarkers dominating and apricot tree soils showing the highest microbial activity. Metabolomic analysis identified 247 distinct metabolites, revealing unique organic acid profiles for sour cherry and quinone accumulation for cherry, with depth also influencing microbial communities and metabolite composition.

Hongmei Lu, Yanliu Lin, Pieter Hooimeijer, Yuelai Liu · Journal of Environmental Policy & Planning · China

This study investigates emerging coproduction transforming neglected vacant lands into community gardens in underserved neighborhoods in China, focusing on how collectivism influences civic engagement. Employing mixed methods including surveys, interviews, and field observations, the research explored how factors like motivation, legitimacy, and challenges manifest in a collective context. Findings revealed that residents prioritize neighborhood well-being over individual benefits, civic initiators use collectivism to legitimize garden land use, and residents frame community gardens as collective endeavors with broad societal benefits.

Yukarie Ayu Wulandari, Ade Sumiahadi, Dirgahani Putri, Helfi Gustia, Rosdiana · Jurnal AGROSAINS dan TEKNOLOGI · Indonesia (Jakarta)

This study, conducted from March to June 2025 in East Jakarta, investigated heavy metal contamination levels in mustard greens grown through urban agriculture. Mustard green samples were collected from five sub-districts, and lead (Pb) and cadmium (Cd) content was measured. Results showed that Cd absorption in mustard greens was very low, well below national and international maximum standards, but Pb absorption exceeded both national (0.5 ppm) and international (0.3 ppm) maximum permissible standards. No strong correlation was found between air quality and Cd or Pb content in the mustard greens.

Dauda Rotimi Awoniran, Temitayo Abayomi Adeseye, Shakirulah Olayemi Agboola, Shade Babalola · Sustainability Science and Resources · Nigeria (Lagos)

This study examined agricultural land use change in Lagos Metropolis, Nigeria, between 1984 and 2024 using Landsat satellite images and spectral indices. Findings indicated that farmlands in the study area declined by 13.03% between 1984 and 2013, and by 21.79% between 2013 and 2024. Between 1984 and 2013, 89.48% of farmlands were converted to other land uses, and between 2013 and 2024, 73.51% were converted. Normalized Difference Vegetation Index (NDVI) results also indicated a deterioration in the environmental condition of urban farmlands.

Emilie E. Ellis, S. Campbell, Jill L. Edmondson · Proceedings of the Royal Society B Biological Sciences · Global

A large-scale assessment across three cities found up to a 43% reduction in species richness of bees, hoverflies, and nocturnal moths in urban horticultural sites along urbanization gradients. These declines are driven by taxon-specific landscape changes like reduced tree canopy and semi-natural habitat. Moths and hoverflies were particularly sensitive to urbanization compared to bees, indicating a wide range of pollinators are under threat in urban landscapes.

Cristian Granados Martínez, Meyer Guevara-Mora, Eugenia López‐López, José Rincón Ramírez · Water · Colombia

This study evaluated aquatic macroinvertebrate community structure in the Ranchería River, Colombia, across conserved, urban/agricultural, and mining zones during the dry season (January–March 2021). Urban/agricultural zones showed the lowest richness (35 genera) and were characterized by disturbance-tolerant species, particularly Melanoides. Land use types constituted the primary driver of community structure, with a 24.1% pure effect, exceeding physical, chemical, and land cover variables.

Sergi Ventura, J.R. Armengol Miró, David Camacho-Caballero, Enric Casellas, Ricard Segura-Barrero, Alberto Martilli, gara villalba · Urban Climate · Spain (Barcelona)

This study used the Pseudo Global Warming method and WRF model to assess urban heat adaptation strategies in the Metropolitan Area of Barcelona. Three strategies were evaluated: increasing rooftop albedo, implementing irrigated sedum green roofs, and increasing peri-urban agriculture and urban parks. While increasing rooftop albedo provided the greatest daytime cooling (−1.75 °C), and green roofs and peri-urban agriculture showed moderate regulation, none of the strategies fully counterbalanced the projected 6 °C temperature increase by 2100, indicating a limited capacity of these adaptations under severe warming scenarios.

Maria Angela Diva Vilaningrum Wadyatenti, Ika Yuli Listyarini, Fransisca Desiana Pranatasari · Jurnal LeECOM (Leverage Engagement Empowerment of Community) · Indonesia

A community-service report on Kampung Wisata Kali Gajah Wong, a tourist site in a densely populated urban area of Yogyakarta, Indonesia, that has several underutilized abandoned plots of land. The intervention provided education and mentoring in using abandoned land and maximizing limited space for urban farming, with results positioned as a diversification of educational tourism products — priced with an appropriate cost of production (HPP) and attractive packaging — as a form of sustainable tourism marketing. The activity is reported to have improved partners' skills in implementing urban farming and included the handover of a complete set of equipment.

Ganda Adoum Malato, Nguinambaye Mberdoum Memti, Alhadj Markhous Nazal, TAMTIAL Ngariban, Touroumgaye Goalbaye · Journal of Experimental Agriculture International · Africa

A field survey of 121 randomly selected market gardeners in the city of Sarh, Chad, characterized market gardening practices there, covering grower profiles, farm characteristics, cultivation practices and vegetable products. Most gardeners were married men (70.25% married, 86.78% men) with an average age of 31, only 11.57% illiterate, farming plots averaging 333 m² (range 42-1,492 m²), 56.20% of which were inherited; 66.67% irrigated with river water, 83.5% used organic fertilizer and 82.64% used chemical fertilizer, 53.72% applied pesticides while 46.28% used biopesticides, and leafy vegetables made up 45% of cultivated products.