Research & reports

Alex Barimah Owusu, Collins Adjei Mensah, Clement Kwang, Gerald Albert Baeribameng Yiran, Ronald Reagan Gyimah, Dominic Edem Hotor, Princella Ofori Darko · International Planning Studies · Ghana

This paper analyzed the replacement of green spaces with brown spaces in Accra, Ghana, from 1991 to 2021 using Landsat satellite images. Brown areas increased from 24.5% in 1991 to 81% in 2021, while green areas decreased from 75.5% to 19% during the same period. The study found a significant reduction in green spaces due to urbanization.

Jeffery W Bentley, Paul Van Mele · CABI eBooks · Global

This work presents several global examples of community engagement aimed at reviving traditional food cultures. In Egypt, the NGO Nawaya empowers rural women as caterers by preserving culinary heritage, while a school in Peru integrates local knowledge and biodiversity through school gardens. France's La Tablée event connects organic farmers and consumers, and Bolivia's AGRECOL Andes supports smallholder farmers in selling organic produce to low-income communities. These cases highlight the potential of community involvement in revitalizing traditional food cultures.

Mokhdum Azam Mashrafi, Mokhdum Azam Mashrafi · Zenodo (CERN European Organization for Nuclear Research) · Global

This project aims to establish an integrated, eco-friendly system for fish culture, vegetable cultivation, fruit gardening, and animal farming within and around cities, towns, villages, highways, and agricultural zones. The system utilizes drain-type artificial lakes, fenced culture units, water recycling mechanisms, climate-control methods, and energy-efficient technologies to ensure high production even in challenging environments. The project emphasizes food security, urban sustainability, youth employment, environmental protection, and efficient land use.

Ara Jeong, Dylan S. Connor, Ronald I. Dorn, Yeong Bae Seong · Land · Global

This study modeled the impact of urbanization on soil erosion across global cities using modern erosion data and cosmogenic nuclide 10Be analysis. It found that urbanization accelerated soil erosion by approximately 7–19 times in environments with mean annual precipitation below 1500 mm, and by 23–72 times in wetter urban centers. A century-long expansion of Phoenix, USA, accelerated soil erosion by about 12 times, supporting the urban cycle of soil erosion theory.

Birgit Hoinle · Global Environment · Colombia (Bogotá)

This study explores the relevance of Buen Vivir (good living) for urban spaces and its practical manifestations in urban-gardening contexts in Bogotá, Colombia. Based on eighteen months of fieldwork inspired by participatory action research, it shows how urban agroecological initiatives create spaces for Buen Vivir within urban areas. The study discusses the potential and limitations of such projects, which contribute to balanced nature-society relations and decolonise urban spaces.

Sudan Prasad Uprety, Tobin Hindle · Himalayan Biodiversity · Nepal

A study of 245 respondents from Chitwan, Dhading, and Rasuwa districts in Nepal identified major drivers of food system changes. These drivers included a lack of agricultural labor, insufficient government support, crop damage by wildlife, land abandonment, and shifts in occupation. Additionally, increased outmigration from rural to urban areas, climate change, and improved access to markets and processed foods were noted as significant factors influencing food systems in these districts.

Yujun Wei, Xiaokun Wei, Zhonghua Ye, Jie Fan · Frontiers in Sustainable Cities · Global

This study conducted a comprehensive bibliometric analysis of the intersection between Food Security and Urbanization (FSU) research. Using statistical, co-word, and social network analysis, it mapped the intellectual landscape and global collaboration networks. Findings revealed dominant contributions from the United States and China, and a key observation was the disconnect between urbanization and food security studies, underscoring the need for a more integrated approach. The study also showed that urbanization's impact on food security differs across developed and developing countries.

Aditi Sagar, Deepak Lall, Unnati Singh · International Journal of Advanced Biochemistry Research · Global

This review explores the nutritional profile, cultivation techniques, health benefits, applications, challenges, and future directions of microgreens. It discusses their role in sustainable agriculture, urban farming, and the food industry, highlighting their potential in promoting human health due to compounds like antioxidants, vitamins, minerals, and phenolic substances. The paper also provides an overview of their nutritional properties, a comparison with sprouts, potential bioactive compounds, and aspects related to cultivation, harvesting, marketing, and prospects.

S. Pickles, Anita Stefoska‐Needham, Karen Charlton · Renewable Agriculture and Food Systems · Global

This scoping review was undertaken to identify factors affecting the economic sustainability and associated viability of soil-based commercial farms located in urban and peri-urban settings within OECD member countries. Following the PRISMA ScR methodology, 170 eligible articles were identified from four scientific databases. This review found that many soil-based urban farms in OECD countries struggle to achieve economic sustainability or organizational viability.

Меглена Златкова · Семинар_BG · Bulgaria (Plovdiv)

This article analyzes urban gardening as a practice of inhabiting in the Bulgarian post-socialist city, based on long-term anthropological research in the Trakia residential district of Plovdiv. It examines how inter-block gardens and peripheral "ranch" gardens are maintained, transformed, and inherited amidst changing urban space management. Urban gardening is interpreted as a sustainable mechanism for rooting in the city and understanding post-socialist forms of inhabiting public space.

Paul Β. Thompson · · Global

This chapter explores the potential for alliance around issues such as sustainability and the political interests of rural areas within food systems. While archetypes set different priorities, they generally do not involve irresolvable incompatibility, allowing for opportunities for alignment in support or opposition to policy initiatives or technological innovations. Sustainable intensification, rural resilience, and urban agriculture challenge the presumption that there is nothing morally unique in the production and distribution of food and fiber goods.

Hal Crimmel · ISLE Interdisciplinary Studies in Literature and Environment · Global

Daniel Philippon's latest book examines the production, processing, and consumption of sustainable food, focusing on the prolific work of agricultural writer Wendell Berry, Italian Slow Food advocate Carlo Petrini, and chef and writer Alice Waters. The book explores the central question: "How did nonfiction writing, as exemplified by the work of these three authors, shape the sustainable food movement?" Philippon's experience volunteering on a Wisconsin CSA farm provides context for probing Berry's ideas about agricultural practices.

Yanick Borel Kamga Valerie Njitat Tsama* · Journal of Biodiversity and Environmental Sciences (JBES) · Cameroon (Nkongsamba)

This study assessed the impact of untreated waste from the municipal slaughterhouse in Nkongsamba, Cameroon, on vegetation by conducting floristic inventories at upstream, near, and downstream sites. Twenty-five 100 m2 plots were established at each site, revealing a total of 105 species from 79 genera and 41 families. The downstream site exhibited the highest species richness with 81 species, 70 genera, and 35 families, but these results showed a dominance of ruderal taxa and pollution bio-indicators like Commelina benghalensis and Tithonia diversifolia, reflecting ecological disturbance of the plant environment.

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.

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.

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.

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.

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.

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.

Sarah Steinegger, Nora Katharina Faltmann · Journal of Political Ecology · Global

A qualitative study of a Community-Supported Agriculture (CSA) initiative in Switzerland that links a rural mountain area with urban consumers (Journal of Political Ecology, 2025) examined institutional, organizational, cognitive, social, and experiential proximity between consumers and farmers despite geographical distance. The study found that consumers and farmers faced challenges in establishing proximity, but that shared experiences from farming activities and social events, along with participants' willingness to improve CSA operations and strengthen ties, contributed to an ongoing process of building proximity.

Lafia N' Gobi GM, Moussa S, Falalou H, Degla P · Scientific Reports · ニジェール・ニアメ市（サヘル）

A study of how 150 urban pearl millet farmers aged at least 40 in Commune V of Niamey — an area the authors note is often overlooked in agricultural studies, since most work focuses on broader farming systems — perceive climate change and what they do about it. Respondents were reached by snowball sampling; data came from structured interviews, focus group discussions and key informant interviews with the Agricultural Extension Unit, alongside an analysis of 30 years of rainfall data (1991-2020). Farmers showed a high level of climate awareness over the past 30 years and had adopted both local and extension-based adaptation measures, and significant disruptions in rainfall were confirmed in the record. The adaptation strategies used were soil fertility regeneration techniques, crop diversification, crop defence, improved seeds, organic fertilizers, adjusted planting calendars, water conservation techniques, and prayers or rituals. Descriptive statistics, statistical tests and multinomial logistic regression were used to identify the determinants of adoption.