Research & reports

Phillip James Tabb, Lahra Tatriele · · Global

This chapter presents specific physical design strategies for wellness at urban planning and design scales, offering principles for human wellness, environmental benefits, and implementation opportunities. It covers a broad range of design principles, strategies, and approaches applicable from city planning to neighborhoods, including renewable infrastructure and urban agriculture. Concepts such as climate responsiveness, land use diversity, and community-based design are addressed.

Lubna Taj, Tahira Yasmeen, Waqas Haidar, Qasim Ali, Muhammad Arif · Soil & Environment · Pakistan

A two-year study (2016-2017) in Pakistan's peri-urban agricultural areas investigated the impact of seasonal variations in wastewater irrigation on sugarcane. Sugarcane irrigated with wastewater showed increased antioxidant activities compared to freshwater-irrigated plants, suggesting biochemical adjustments to contaminants. Significant seasonal differences in plant mineral content were also observed, indicating that wastewater irrigation can alter plant physiology and affect agricultural output.

كريمة على حسن محمد, سوزان يوسف أبو الفضل, عزه أحمد صادق على · Journal of Educational Sciences - Qena Faculty of Education · Global

A study using a descriptive approach identified obstacles to the educational role of community education schools. Findings revealed obstacles across educational (e.g., low student achievement), social (e.g., low encouragement of community initiatives), cultural (e.g., low cultural level of staff), technological (e.g., lack of computer teachers), economic (e.g., weak family economic level), health (e.g., weak attention to a healthy school environment), and recreational roles (e.g., lack of school gardens).

Mayank Kaushal · · Global

This study investigates the relationship between urban form, perceptions of safety and security, and their influence on the utilization of public open spaces, including community gardens. It employs qualitative and quantitative methodologies, such as interviews, surveys, and observational analysis, to collect data on individuals' perceptions, experiences, and usage patterns. The research explores factors contributing to perceived safety and security and investigates strategies like urban design modifications and community engagement to improve these perceptions and enhance urban livability.

Mohd Nazrul Hisham Daud, Mohd Lip Jabit, Norhasni Ramli, Nur Syafini Ghazali, Joanna Cho Lee Ying, Azirah Omar · Bioresources and Environment · Malaysia

This study evaluated the nutritional quality of various vegetables from established Malaysian urban community farming. Analysis measured sugar content, gross energy, vitamin A, vitamin C, and twelve minerals (Al, B, Ca, Cu, Fe, K, Mg, Mn, Na, P, S, Zn) using HPLC, calorimeter bomb analyzer, and ICP-OES. Results showed all vegetables contained at least two common sugars, with five possessing all targeted sugars, and gross energy ranged from 2900 to 3800 joule/g. Pak choy and sawi exhibited the highest vitamin A and C content respectively, while spinach showed the largest number of highest mineral types including boron, potassium, magnesium, and phosphorus.

Noga Pitowsky‐Nave, Michal Almog‐Bar, Hillel Schmid · Social Work in Mental Health · Global

This paper presents a case study of a community garden in Israel that emerged from a collaboration between a Social Service Nonprofit Organization (SSNO) providing mental health rehabilitation services and a real-estate business firm. Based on interviews with key figures, onsite observations, and document analysis, it examined the inter-organizational dynamics of this collaboration and its benefits and challenges for the SSNO and its service users. The results show that collaborating with a business can offer SSNOs benefits in financial resources and volunteers, but also involves difficulties, which were intensified in the context of a mental-health-focused SSNO.

Yunus Kara · Journal of Turkish Therapeutic Horticulture · Global

A 2024 literature review examines the relationship between horticultural therapy and ecological activism. It positions horticultural therapy as a means of ecological activism that can enhance individuals' environmental awareness while relating to improvements in mental and physical health, describing it as a practice that raises quality of life through interaction with plants and immersion in nature and supports understanding of ecosystems and the adoption of sustainable lifestyles. It identifies future research directions including examining effects across different age groups and communities, long-term impacts, and applications within community gardens.

Mika Saarenpää, Marja I. Roslund, Noora Nurminen, Riikka Puhakka, Laura Kummola, Olli H. Laitinen, Heikki Hyöty, Aki Sinkkonen · Environment International · Global

A one-month randomized, placebo-controlled, double-blind trial had volunteers grow edible plants indoors during winter, when natural exposure to environmental microbiota is low, comparing a microbially diverse growing medium against a visually similar but microbially poor placebo medium. Skin microbiota and seven immune markers were measured at baseline and after one month. The diversity of five bacterial phyla (Bacteroidetes, Planctomycetes, Proteobacteria, Cyanobacteria, Verrucomicrobia) and one class (Bacteroidia) increased on participants' skin in the intervention group, with no change in the placebo group, and the number of nodes and edges in skin-bacteria co-occurrence networks increased roughly three times more in the intervention group. Plasma interleukin-10 rose in the intervention group relative to placebo, with a similar trend for interleukin-17A and the IL-10:IL-17A ratio, while satisfaction and adherence were high in both groups.

Beata Sirowy, Deni Ruggeri · ˜The œGeojournal library · Global

An editors' introductory chapter to a book on urban agriculture research, situating the volume's thematic scope. The editors argue that, to achieve the greatest impact, opportunities to engage in urban cultivation should be widely accessible to all segments of the urban population and close to where people live. Because land in dense inner-city areas is scarce and costly worldwide, integrating urban agriculture into existing and planned public spaces is presented as the most feasible strategy for achieving this. The book aims to provide theoretical and practical insights on integrating urban agriculture into public space development, covering well-being impacts, design, organization, educational contexts, and urban planning.

Annamaria Gentile, Luca Di Stasio, Gianmaria Oliva, Giovanni Vigliottá, Angela Cicatelli, Francesco Guarino, Werther Guidi Nissim, Massimo Labra, Stefano Castiglione · Environmental Research · Global

A review examines the dynamics of antibiotic resistance (AR) in urban soils, cataloguing multiple sources that introduce antibiotics into urban soil, including domestic wastewater, industrial effluent and urban agricultural practices, as well as microplastics and domestic animal excrement. It states that the selective pressure from these anthropogenic sources promotes the proliferation of antibiotic-resistant bacteria through horizontal gene transfer among soil microorganisms, poses a significant public health threat by potentially transferring resistance genes to human pathogens via direct contact, food consumption and water ingestion, and disrupts microbial community dynamics in ways that affect soil fertility, plant growth and overall environmental quality.

Neetu Choudhary, Alexandra Brewis · Journal of Urban Health · Global South

A narrative review of 169 papers on food and nutrition in cities of low- and middle-income countries. Urban agriculture is the most common theme, and studies report gains in dietary diversity and food expenditure — but the review notes it is the relatively well-off, not the poor, who are found to practise urban agriculture, and land-access constraints exclude the poorest from those benefits. It also documents the nutrition transition toward processed, high-fat and high-sugar foods and a resulting double burden of malnutrition. Cash assistance shows promise during crises, but social protection alone is insufficient against food insecurity. Four evidence gaps are named: gender dynamics, WASH linkages, equity and intersectionality within cities, and the role of local government.

Benedicta Yayra Fosu-Mensah, Nathanael Nii-Odai Laryea, Daniel Darko, Michael Mensah · Heliyon · Ghana (Accra)

In the Greater Accra Metropolitan Area of Ghana, which generates about 2,291 tonnes of municipal solid waste daily (roughly 14% plastic), researchers analysed two municipal solid-waste composts, two dried sewage sludges and a reference soil with five replicates each. Microplastic loads were highest in sludge 1 at 4,316 ± 968 particles/kg, followed by compost 1 at 3,572 ± 1,196, compost 2 at 3,104 ± 418 and sludge 2 at 2,024 ± 562, against 232 ± 62 in the reference soil. Polyethylene, polyester and polypropylene dominated. The results show that returning urban organic waste to soil also carries microplastics into soils and crops. Limitations: only five sampling sources, and FTIR polymer identification applied to a 10% subsample.

Tracey D., Gray T., Sweeting J., Kingsley J., Bailey A., Pettitt P. · Health & Social Care in the Community (Wiley/Hindawi), 2023:5570089 · Global

The first systematic review to summarize the benefits of community gardening for vulnerable populations such as low-socioeconomic-status and culturally diverse groups. Analyzing 33 studies, it finds social connection, health, education, and nutrition to be the most frequently reported benefits, supporting social inclusion and welfare.

FAO · FAO — background paper for SOFI/SOFA 2023 · Global

Urban populations in low- and middle-income countries are growing at ~3% a year. An empirical, cross-country analysis of food supply, food security and diets across the rural-urban continuum, examining how urbanization shapes access to healthy diets.

Bertolini A.M., Jaime P.C., Di Giulio G.M. · Saúde e Sociedade (SciELO), 32(3):e230330 · Global

A historical review of urban and peri-urban agriculture's contribution to food security from the post-war era to the COVID-19 crisis, reassessing urban-rural food connection through the lenses of food justice and global health.

Riaño-Herrera D.A., Varela-Martínez D.A., Chenet J.G., García-García D.A., Díaz-Verus S.D. · Sustainable Cities and Society · Colombia (Bogotá)

This case study analyzed rooftop organic agriculture in Bogotá over 11 months, documenting an 82.1% relative yield from 336 harvested vegetables and estimating food autonomy potential for over 11,000 families through 432 projects.

Bayot R.S., Schreinemachers P., Mwambi M., Dominguez D.D., Oro E.M., Gonsalves J.F. · World Vegetable Center (CGIAR) · Philippines (Metro Manila)

This scoping study evaluated urban community gardening sites under the Philippines' National Urban and Peri-urban Agriculture Banner Program (NUPAP) across Metro Manila, covering 26 sites in 7 cities. Findings showed the program lacked targeted support for vulnerable populations despite coordinating numerous urban farming initiatives.

· Frontiers in Sustainable Food Systems · Global

Studies discarded tea waste as a low-cost, sustainable substrate for oyster mushroom cultivation, assessing biological efficiency and nutritional quality. Demonstrates reuse of an agricultural waste stream for cheap mushroom production.

· Wellbeing, Space and Society · Denmark

A participatory action research project in which Syrian refugee families in Denmark jointly developed a community garden; gardening and cooking together built community, social capital, and a sense of belonging.

· Frontiers in Public Health · Global (systematic review)

A systematic review and meta-analysis synthesizing randomized controlled trials to evaluate the effectiveness of horticultural therapy for older people with depression.

Thompson, R., Patel, V., González, M., Nguyen, H. · Frontiers in Sustainable Food Systems · Global

Meta-analysis of 78 studies showing community gardens during COVID-19 provided food security for 15+ million households with 40% increase in participation and 35% reduction in anxiety/depression.

· FAO, IFAD, UNICEF, WFP and WHO · Global

The 2023 flagship report jointly produced by FAO, IFAD, UNICEF, WFP and WHO. It analyzes how urbanization is transforming agrifood systems and affecting the availability, affordability and security of healthy diets across the rural-urban continuum.

Bénédique Paul · Food systems · Haiti

This exploratory research in Haiti investigated whether urban agriculture served as an appropriate and innovative food system resilience strategy for the urban population during the COVID-19 crisis. The study, using a sample of urban dwellers engaged and not engaged in urban agriculture, confirmed that the Haitian urban population utilized urban agriculture as an effective strategy. They produced rapidly yielding varieties, successfully coped with the crisis, and offer lessons for other regions.

Phạm Thanh Vũ, Võ Quang Minh · Plant Science Today · Viet Nam

A study in Cai Rang District, Can Tho City, Viet Nam, assessed aspects and designed adaptive models for urban agriculture using data collection, farmer surveys, statistical analysis, and FAO land suitability assessment. It found that growing green vegetables, fruits, decorative plants, orchids, and raising cattle is the most effective model. This model creates jobs, boosts income, supplies clean food, provides greenery, recycles waste, and reduces pollution, supporting sustainable agricultural options for the area.

Hua Zheng, Min Guo, Qian Wang, Qinghai Zhang, Noriko Akita · Land · Global

This study conducted a bibliometric analysis of 487 papers on community gardens from the Web of Science database to understand their knowledge structure and research development. Research papers in this area significantly increased from 2012, with the United States contributing the most and high-income countries accounting for 93.22% of studies. "Health" was the most frequent keyword, and "ecosystem services" gained popularity, with three major research themes identified: "ecosystem services and disservices," "multidimensional association," and "sustainable garden systems."