Research & reports

Chifunda Emmanuel Felix, Kifunda Christina Felix · Cogent Food & Agriculture · タンザニア

A paper on urban and peri-urban agriculture in Dar es Salaam examined through the gender dynamics of the people working in it. The bibliographic record (authors, journal, DOI) was verified at the source, but the abstract could not be retrieved, so only the scope of the topic is described here.

Ricardo Robins · Fundación Rosa Luxemburgo (Oficina Buenos Aires) · Argentina

A reported feature tracing the origins of Rosario's Urban Agriculture Programme (PAU) through interviews with founder Antonio Lattuca: the first community garden in the Saladillo Sur neighborhood in 1987, the 1990 municipal ordinance creating the Community Gardens Programme, and the PAU's formal launch in 2002. It reports the programme today spans 12 parks and community gardens across roughly 40 hectares, with over 150 families harvesting about 650,000 kg of agroecological vegetables a year, and profiles the Tablada Park Garden (opened 2008, 3 ha, 20 workers).

Rao X., Zahid A., Ye X., Jain D., Duffield N. · Urban Informatics · 国際（論考）

A Perspective arguing that controlled environment agriculture (CEA), driven by venture capital and profit-maximising imperatives, has delivered limited scalability, narrow crop diversity and minimal engagement with spatial equity — the fair distribution of food infrastructure across urban geographies. It calls for repositioning CEA not as a standalone technological fix but as a component of urban infrastructure delivering co-benefits for food justice, public health and environmental resilience.

Noxolo B.M., Kanosvamhira T.P. · Urban Agriculture & Regional Food Systems · 南アフリカ・ケープタウン（低所得地区）

Surveys and interviews assess whether hydroponics, of interest because dense settlements leave little space, is actually viable in Cape Town's low-income urban areas — deliberately supplementing a literature skewed towards Global North cities. Farmers perceive benefits in improved yields, water conservation and efficient land use, all valuable in a water-scarce, space-constrained city, but high setup costs and limited government support remain significant obstacles. Drawing on urban political ecology, the paper argues these financial and institutional barriers are rooted in historically produced inequality and ongoing capitalist dynamics of urban development. It concludes that while hydroponics has potential as a sustainable alternative, its high costs hinder broader applicability, and it is not yet a viable large-scale route to food security where resources are unequally distributed; supporting actors must first address financial feasibility and local expertise.

Ceccanti F., Bischi A., Desideri U., Baccioli A. · Energy Conversion and Management · 国際比較（トロンハイム・上海・ドバイを想定したモデル計算）

Filling a gap left by studies that assessed vertical-farming energy use and cost-effectiveness with simplified models, this paper isolates how individual input parameters drive efficiency, sustainability and economic viability using a detailed modelling framework with sensitivity and correlation analyses. It evaluates 162 scenarios combining three levels of temperature, photosynthetic photon flux density (PPFD) and CO2 concentration across the socio-environmentally distinct Trondheim, Shanghai and Dubai regions, at two insulation thicknesses. Because of HVAC and dehumidification, crop productivity stays optimal regardless of insulation or external climate. PPFD dominates growth (correlation 0.85), ahead of CO2 (0.36) and temperature (0.22), and also drives energy consumption (0.73). Lowest specific energy consumption coincides with lowest productivity (55 kg/m2), and the cheapest levelized cost of lettuce came at 24 degC, 250 umol/m2s PPFD, 1400 ppm CO2 with insulation (102 kg/m2). Only decarbonised energy systems can support vertical farming without raising CO2 emissions relative to imported lettuce.

Darrow S., Kathi S., Liebe R., Cline L.L., Moss J.Q. · Urban Agriculture & Regional Food Systems · 米国オクラホマ州（農村・都市・近郊）

Oklahoma's specialty crop sector is in decline — vegetable operations fell from 799 in 2007 to 482 in 2022 — yet regional fruit and vegetable producers remain the primary supply foundation for farmers' markets, food hubs and direct retail serving urban and peri-urban communities, so producer viability is itself an urban food access and public health concern as food deserts expand. Five semi-structured focus groups with 29 experienced producers from rural, urban and peri-urban Oklahoma were analysed by open coding thematic analysis in NVivo, with saturation confirmed iteratively and rigour established through member-checking, peer review of codes and field note triangulation. The 180 initial codes were organised into 10 parent codes and three themes: the countercultural philosophy of production, the lack of accessible resources, and industry barriers preventing development — compounding disadvantages at cultural, institutional and structural levels. The authors call for a statewide local food system plan, a growers' association and dedicated local-food-system extension roles.

Glaros A., Newell R., Pizzirani S., Newman L. · Urban Transitions · カナダ・ブリティッシュコロンビア州ローワーメインランド（都市圏）

Using the Lower Mainland of British Columbia, Canada as a case study, this paper defines and assesses the tradeoffs across six common scenarios for controlled environment agriculture (CEA) implementation. Land use considerations and operational priorities define the scenarios and weight the modelling criteria. Geospatial modelling estimates the share of the population within walking distance of potential CEA sites that could be supplied with their daily intake of leafy greens, alongside associated yields, energy use, water use and potential land sparing. Across all scenarios, between 4% and over 100% of nearby populations could be served, demonstrating both the promise of hyper-local food provisioning and how sharply outcomes swing with siting and operational goals.

Kanosvamhira T.P., Magidi M. · International Journal of Agricultural Sustainability · 南アフリカ・ケープタウン／ジンバブエ・ノートン

A qualitative case study comparing the motivations, operational dynamics, land access challenges and legislative contexts of urban agriculture in two contrasting cities — Cape Town (South Africa) and Norton (Zimbabwe) — through stakeholder interviews and policy analysis, guided by social capital theory. In Cape Town urban agriculture is semi-institutionalised, backed by governmental and civil society actors and framed within wider food justice and community development agendas, yet practitioners face significant constraints from land access, urban policy fragmentation and competition over space. In Norton it is largely informal, a survivalist response to persistent socio-economic hardship with minimal formal support but relatively flexible regulation, where land-tenure insecurity and the threat of eviction are the pressing concerns. The paper argues that context-specific legislative frameworks, secure land rights and inclusive urban planning are the enabling conditions, situating urban agriculture within debates on land governance and urban informality.

Coyne D., Nyambura E.I., Atandi J.G., Obebo F., Alam M.J., Kumar S., Arro E.A., Adimassu Z., Bihon W., Schreinemachers P. · Frontiers in Sustainable Cities · エチオピア・アディスアベバ／ケニア・ナイロビ／バングラデシュ・ダッカ／フィリピン・メトロマニラ

A comparative multi-city case study of urban and peri-urban vegetable seedling systems — a neglected component of urban agriculture — in four rapidly growing cities: Addis Ababa, Nairobi, Dhaka and Metro Manila. Data came from 154 stakeholders including urban farmers, nursery operators, seedling suppliers, agro-input dealers and government officers, complemented by secondary literature. Across all four cities urban vegetable production was dominated by small-scale intensive systems growing predominantly leafy vegetables, while seedling systems remained underdeveloped: informal nursery operations, weak quality assurance, open-field propagation, limited technical capacity and fragmented market linkages, driving widespread reliance on direct seeding and low-quality planting material despite strong demand for quality seedlings. Identified opportunities include improved propagation technologies, certification systems, digital marketing, commercialization of indigenous vegetable seedlings and stronger public-private partnerships. As one of the first cross-continental assessments of urban vegetable seedling systems in low- and middle-income countries, it positions seedling systems as a critical but overlooked part of resilient, nutrition-sensitive urban food systems.

Huq F.F., Deacon L. · Discover Sustainability (Springer), 6:696 · Global

A systematic review of 37 studies examining how community gardens affect food access, urban resilience, and community well-being, with research interest peaking during the COVID-19 pandemic. It identifies inequitable access and weak policy integration as key barriers and calls for inclusive, interdisciplinary, long-term planning.

Amici A. S., Appicciutoli D., Bentivoglio D., Staffolani G., Chiaraluce G., Mogetta M., Finco A. · Frontiers in Sustainable Food Systems 9:1584778 · Italy

Assesses the profitability of two microgreen-producing vertical farms in northern Italy using semi-structured interviews, applying operational margin and cost-revenue ratios to show these systems are economically profitable under current Italian conditions.

Zuo J., Huang L., Minami C. · Corporate Social Responsibility and Environmental Management · Japan

Using social identity theory and data from 226 Japanese employees, shows that perceived CSR boosts job and organizational engagement through organizational identification, moderated by the corporate volunteering climate.

Neumann V., Schmid B., El Benni N., Finger R. · Land Use Policy · Switzerland

Survey of 500 members of community-supported agriculture and allotment gardens in Switzerland showing social capital has a significantly positive effect on members' perceived benefits, highlighting the social value of collective urban food production.

Alene F.D., Aga M.A. · Frontiers in Sustainable Food Systems 9:1444320 · Ethiopia

This case study in Addis Ababa's Kirkos sub-city examines urban agriculture's role in household food security, finding 48.2% of respondents food secure and about a third reporting urban agriculture helped meet their daily food needs.

東急不動産株式会社, 株式会社マイファーム · 東急不動産 プレスリリース資料 · Japan

Tokyu Fudosan launches an agriculture experience project for Branz owners in Higashimatsuyama using solar-sharing farmland, an official developer-led rental-garden initiative linking resident food education, exchange, and regional revitalization.

名古屋市 東部・緑農政課 · 名古屋市 市民農園調査・広報資料 · Japan

Nagoya outreach and survey material cataloguing municipal allotment types — Nogomi, community, partitioned and Minori farms — with plot sizes, fees and recruitment timing, showing the reality of publicly operated rental gardens.

さいたま市 · さいたま市 農業統計・振興報告書 · Japan

Saitama's annual agricultural report summarising publicly supported urban agriculture including the urban agriculture council, land-coordinator programme and 79 public/private citizen farms with supply statistics.

農林水産省 · 農林水産省 統計調査 · Japan

MAFF nationwide survey of citizen farm counts, plots, area and operator-type trends, providing baseline statistics on publicly and institutionally supported urban gardening across Japan as of March 2025.

Liu Q., Chen T., Zhang N., Lin Z., Ye Z., Jiang K., Gao Y., Guo Y., Weng A. · Energy (Elsevier), 320:135191 · China (Yangtze River Delta)

A quantitative assessment of rooftop agrivoltaics (RAV) — co-locating solar PV and crops on building rooftops — against the SDGs. For the Yangtze River Delta urban agglomeration (~10,720 km² of rooftops) it estimates ~93.1 TWh/year of electricity (6.3% of regional demand), ~43.6 Mt/year of lettuce, large job creation, and ~127 Mt/year of CO2 reduction, positioning RAV as a multifunctional urban land-use that pairs 'zero food miles' food production with clean energy.

Zhang Y., Chen T., Gasparri E., Lucchi E. · Sustainability (MDPI), 17(2):666 · Australia (Sydney)

Proposes a modular agrivoltaics building envelope that physically integrates thin-film PV and hydroponic farming into the building skin itself, rather than treating solar and agriculture as separate systems. Using a circular design approach with multi-objective optimization of energy, light, water and structure (case study: Sydney), it extends food-plus-energy production from rooftops to walls and facades, highlighting space-utilization and system-integration gains for net-zero urban architecture.

Schreinemachers P., Kumar S.S., Uddin M.N. · Food Security · Bangladesh (Dhaka)

Panel data from 679 households across four Dhaka metropolitan city corporations shows that promoted urban home gardens significantly improved vegetable production and consumption, with 85% of participants being women.

Yapp E.H.T., Jamil N., Lee L.S.G., Chooi Y.T., Chen C.O. · Cogent Food & Agriculture, Vol. 11, Article 2448601 · Malaysia (Penang, Johor, Sabah)

A qualitative study using semi-structured interviews with urban farmers in Penang, Johor, and Sabah found that hydroponic and vertical farm operators face persistent challenges from government regulations, volatile markets, financial constraints, and environmental factors despite existing subsidy programs.

Xue Y., Yan J., Mohsin M., Mehak A. · Frontiers in Sustainable Food Systems · Global

Comprehensive analysis of economic vulnerabilities in agri-food supply chains and mitigation approaches through local food system strengthening, highlighting role of urban agriculture.

(Open Research Community) · ResearchGate, Discover Sustainability (Springer Nature) · Global

2025 review article examining urban agriculture's contribution to food security and mechanisms of achievement. Analyzes through empirical evidence the benefits and challenges, income generation effects, and improvements in fresh food access for low-income households.

Kristida Chhour, Maya Carrasquillo · Frontiers in Sustainable Food Systems · United States (San Francisco East Bay)

This mixed-methods case study of the water-scarce San Francisco East Bay maps 91 urban agriculture sites, interviews 34 stakeholders, and analyzes regional plans to examine water management and urban agriculture's resilience potential. It finds growers were the main water managers while municipalities and utilities were minimally involved, that land access shaped water access, and that institutional support to stabilize long-term land and water access is needed for greater water and food-system resilience.