Research & reports

Riccardο Petrini, Lisa Ghezzi, Simone Arrighi, Lisa Genovesi, Chiara Frassi, Luca Pandolfi · International Journal of Environmental Research and Public Health · Italy (Tuscany)

Trace elements were measured in soil and groundwater in the Fornaci di Barga urban area, Tuscany, Italy. Results indicate that Cu, Zn, and Cd are the main contaminants in surface soil, likely originating from airborne particulate matter deposition from metallurgical activity. Risk assessment considering soil ingestion and dermal contact exposure routes revealed that the cadmium Hazard Quotient approaches unity for children, and the cadmium risk-based concentration is only slightly lower than the maximum concentration measured in soil.

Maddy Power · Policy Press eBooks · United Kingdom

In the UK, food banks and other food aid providers expanded significantly in parallel with welfare reforms and benefit cuts initiated after 2010. This contemporary phenomenon occurred within a historical context of long-standing community-based responses to poverty and hunger in the UK.

Andrew Millie · Crime Media Culture An International Journal · United Kingdom

This article considered guerrilla gardening, which involves taking on other people’s land without permission. A qualitative study of guerrilla gardeners from the North West of England found that guerrilla gardening is a normalised form of law-breaking. Despite not necessarily being to everyone’s taste and gardeners having an autocratic view of property, it is broadly accepted and welcomed, even by those who enforce the law.

Grete Swensen, Vebjørn Egner Stafseng, Véronique Karine Simon · International Journal of Heritage Studies · France (Bordeaux)

This comparative case study examines two regeneration projects, the Darwin Ecosystem Project in Bordeaux, France, and Dr. Dedichen’s Greenhouse in Oslo, Norway, to understand how heritage combined with urban gardening can enhance areas requiring regeneration. The study notes that conflicting economic, political, and cultural views are likely to affect the heritage discourse in marginalized urban areas. It describes how old buildings and historical fragments can be integrated into urban planning initiatives, with residents, artists, and citizen groups cooperating with planning authorities to transform neighborhoods.

Angelica Mendoza Beltrán, Roc Padró, María José La Rota-Aguilera, Joan Marull, Matthew J. Eckelman, Jacob Cirera, Annalisa Giocoli, Gara Villalba · The Science of The Total Environment · Spain (Barcelona)

This study implemented an attributional, regionalized, cradle-to-gate life cycle assessment (LCA) to assess 14 environmental impacts of peri-urban agriculture (peri-UA) in the Metropolitan Area of Barcelona (AMB). It found that vegetables and greenhouses, the prevalent peri-UA land uses, had the largest assessed impacts among all peri-UA land uses. European NPK mineral fertilizer production to cover nitrogen demand for these crops drives all impacts. For fruit crops, on-site nitrogen emissions drive marine eutrophication impacts, and for irrigated herbaceous crops, phosphate runoff drives freshwater eutrophication impacts.

Jonathan Stubberfield, Mads Troldborg, E. Louise Ander, N.M.J. Crout, Scott D. Young, Rupert Hough · Agronomy · United Kingdom

This study investigated the influence of gardening routines on health benefits and risks among 120 urban gardeners in the UK. Participants showed a correlation between autumn/winter gardening activity and fruit/vegetable consumption, with higher physical activity levels and lower BMI than average. However, while gardening offers health benefits, the health risks from gardening on soils mildly contaminated with cadmium and lead may outweigh these benefits, requiring formal consideration within a risk management framework.

Arnaud Sapin, Philippe Bodénan, Thierry Lebeau, Ghozlane Fleury‐Bahi · Journal of Community & Applied Social Psychology · France

A qualitative study in Nantes, France, interviewed 28 allotment garden users to examine psychosocial impacts. While highlighting benefits like psychological well-being, physical health, self-development, and social bonding, the study found these were balanced by various conflicts reported by participants. Lexicometric analysis confirmed that positive and negative social aspects are significantly associated and must be considered jointly.

Sara R. Healy, Eric R. Morgan, Joaquín M. Prada, Martha Betson · Food and Waterborne Parasitology · United Kingdom

This proof-of-concept study investigated the presence of Toxocara spp. eggs on 82 'ready-to-eat' vegetable samples (lettuce, spinach, spring onion, celery) from 16 community gardens in southern England. Two lettuce samples tested positive for Toxocara spp. eggs, showing an overall prevalence of 2.4% for vegetable samples and 6.5% specifically for lettuce. This study is the first to demonstrate Toxocara spp. eggs on vegetables grown in community gardens in the UK and Europe, highlighting biosecurity and zoonotic risks.

Fiona Greenland · Social Forces · Germany (Ruhr valley)

This review of "How Green Became Good" by Hillary Angelo examines why urban greening became a public good, challenging conventional accounts. Tracing urban greening in Germany's Ruhr valley, Angelo argues that greening constructs not only physical spaces but also social imaginaries, where nature as a public good is mutually constitutive with economic production needs, rather than being in opposition. The work shifts the understanding of urbanized nature from inherently contentious politics to a socio-cultural process of urban modernization.

Giulia Giacchè, Véronique Saint-Gès, Yoann Durrieu, Mélanie Collé, Christine Aubry · Territoire en mouvement · France

A multi-phase method, METH-EXPAU®, is proposed for defining urban agriculture (UA) projects, aiming to help landowners select appropriate UA forms based on territorial characteristics. Applied to three case studies in France—Montrouge, a priority district in Lille, and a new district in Bordeaux—the method revealed its potential and shortcomings. It demonstrated how structural, technical, and social characteristics of spaces and agents can rule out certain UA forms that do not correspond to the territory's current needs.

Petr Klusáček, Stanislav Martinát, Klára Charvátová, Josef Navrátil · Land · Europe

This study investigated the drivers of de-agrarianization in post-socialist cities, using Brno, Czech Republic, as a case study through qualitative interviews. It found procedural issues in preserving architectural heritage during the redevelopment of a former Cistercian monastery site, often resulting in only fragments being preserved. The research also demonstrated a decline in the use of urban agricultural properties, which are rapidly transformed into new urban environments under intense urbanization pressures.

Janina Wittenberg, Maria Gernert, Hamid El Bilali, Carola Strassner · Sustainability · Germany (Münster)

This paper explores the role of grassroots initiatives in the transition towards a sustainable urban food system in Münster, Germany, using questionnaires, interviews, and desk research. Results indicate that many initiatives in Münster focus on education and information, raising awareness, rather than offering material alternatives. Policy, education, networks, and communication were identified as key leverage points.

Per-Anders Langendahl, Maria Tunberg, Suvi Kokko · · Europe

Smart urban agriculture — food produced in closed, controlled and digitally augmented environments such as vertical farms, plant factories and aquaponics systems — is found in cities worldwide and is said to produce fresh food year-round using fewer chemicals and fewer food miles. However, critiques of smart urban agriculture note it is a marginal activity that often produces food with low nutritional value and requires energy-intensive artificial lighting. Using qualitative research methods, this report examines the development of smart urban agriculture in Sweden, identifying experimental and entrepreneurial initiatives and analyzing them in relation to high-level policy agendas such as food policy, smart cities and digitalisation. The findings show Swedish smart urban agriculture broadly consists of technology-oriented entrepreneurial start-ups and experimental initiatives split into production-oriented (mainly herbs and leafy greens), community-oriented (prioritizing social benefits), and technology-oriented (developing and supplying digital solutions and services) types. However, product output was limited to a small variety of financially high-margin crops sold at premium prices. In relation to high-level strategic agendas, smart (urban) agriculture is recognized for environmental and social benefits such as mitigating flooding.

Michael Hardman, Andrew Clark, Graeme Sherriff · Agronomy · United Kingdom

Using a qualitative approach across the UK's largest urban farm and a range of other urban agriculture (UA) sites, this study examined the barriers to upscaling city farming. Evidence pointed to urban soil contamination and hesitation about growing crops in cities as a core issue preventing UA from scaling up, alongside public hesitancy and financial barriers, despite the practice's potential social, environmental and economic value through job creation, biodiversity enhancement and shorter food supply chains. The paper concludes that public hesitation, financial barriers and soil quality prevent development, and calls for a more pragmatic approach to these barriers.

Danielle Purkiss, Ayşe Lisa Allison, Fabiana Lorencatto, Susan Michie, Mark Miodownik · Frontiers in Sustainability · United Kingdom

A citizen-science study invited 9,701 UK residents to test how biodegradable and compostable plastics actually degrade in home composting. Many items, including certified products, failed to fully break down; 60% of TUV OK Compost Home-certified items were still clearly visible afterward. The authors conclude home composting is not an effective or environmentally beneficial disposal method for these materials in the UK.

Barbara Sowińska-Świerkosz, Malwina Michalik-Śnieżek, Alicja Bieske-Matejak · Sustainability · Poland

This study analyzed the potential of allotment gardens (AGs) in Poland to be considered nature-based solutions (NBS), examining their use of green/blue infrastructure, problem-solving capabilities, benefits, and economic efficiency. The study identified institutional barriers, irregular distribution of benefits, and deficiencies in economic efficiency as significant obstacles. It concluded that AGs, while a type of unsophisticated NBS, have limited effectiveness.

Dominika Dymek, Agnieszka Wilkaniec, Leszek Bednorz, Magdalena Szczepańska · Sustainability · Poland

This study in Poznań, Poland, examined the significance of allotment gardens in the urban green space system and developed a classification method for urban planning. While over 30% of allotment gardens were found to be of high significance, urban planning documentation indicates plans to reduce their area. Even highly significant gardens are slated for liquidation, highlighting a conflict between their ecological value and current urban development plans.

Ambrogio Zanzi, Valentina Vaglia, Roberto Spigarolo, Stefano Bocchi · Land · Italy (Milan)

This study assessed the sustainability of eight agri-food start-ups in a peri-urban area of Milan, Italy, using the FAO's Sustainability Assessment of Food and Agriculture systems (SAFA) framework. The application of SAFA indicators revealed positive aspects but also some limitations typical of unstructured enterprises.

Sònia Callau-Berenguer, Anna Roca-Torrent, Josep Montasell-Dorda, Sandra Ricart · Investigaciones Geográficas · Spain (Barcelona)

This study analyzed the food system behavior in the Barcelona Metropolitan Region, Spain, during the initial stage of the Covid-19 pandemic (March-May 2020). Semi-structured interviews with 11 peri-urban entities and institutions revealed shortcomings in the operation and logistics of the metropolitan food system. Findings also indicated complicity between local producers and urban consumers, the role of peri-urban agricultural areas in food supply, and a need for cooperation among food system agents.

Zerrin Mercan, Büşra BİLİR, Nilüfer Darıca · Cukurova University Faculty of Education Journal · Turkey

This qualitative study examined the gardens of 27 preschool education institutions in Gaziantep province as physical learning environments. Findings showed that while physical and social areas existed in school gardens, they required qualitative support. Silent areas were very limited and located within vocal areas, and creative and sensory areas were not present in the school gardens.

Irene Håkansson · Local Environment · United Kingdom (London)

This paper critically examines urban experimentation for sustainability, arguing that urban experiments are often assessed from a diffusion-oriented perspective that over-emphasizes unifying visions and neglects unsuccessful initiatives. Using a novel methodological approach combining a metropolitan geodemographic typology with qualitative data on 166 active and inactive urban agriculture initiatives across London, the paper demonstrates that neglecting the diversity of urban socio-economic, demographic, and physical contexts may lead to the erroneous suggestion that only demographically privileged places can achieve sustainability. It highlights that contextual differences at neighborhood levels significantly influence socio-spatial patterns of experimentation.

Friederike Reents · Publication Server of the Catholic University Eichstätt-Ingolstadt (Catholic University of Eichstätt-Ingolstadt) · Germany

This paper analyzes Thomas Kling’s poem „geschrebertes idyll, für mike feser“ as an "allotment garden idyll" within 'new nature poetry'. While Kling skillfully engages with the idyll genre and offers ecological, social, medial, and historical critique, the study finds that he presents a decidedly patriarchal self-image, which contemporary readers would likely find less acceptable.

Petra Hencelová, František Križan, Kristína Bilková, Michala Sládeková Madajová · Norsk Geografisk Tidsskrift - Norwegian Journal of Geography · Europe

This study aimed to identify the impact of visit frequency to community gardens in Slovakia on members' perception of membership importance, satisfaction with community relations, perceived improvement in social relations, and influence on quality of life. A mixed-methods approach, including a questionnaire survey and semi-structured interviews, was used. The analysis did not confirm a dependence between visit frequency and the gardens' impact on members' communities, and found no statistical relationships between the variables in the analyzed data set. However, members positively rated relationships within those communities.

Sandra Schwindenhammer, Denise Gonglach · Politics and Governance · Germany

This qualitative and participatory case study in Germany examined the governance implications of an emerging technology in urban agriculture that connects wastewater treatment and agricultural production for urban hydroponics. The analysis found that while this technology has the potential to facilitate SDG implementation, it simultaneously creates new sector interlinkages between water and food, leading to policy demands that necessitate more integrated policymaking.

Lucia Di Paola · · Italy

This paper examines Milan's Porta Nuova re-urbanization project (2004-2015), which features Vertical Forest skyscrapers as symbols of urban greening. Activists and resident groups strongly opposed the project, criticizing the privatization of a public park and high rents, arguing it represents a top-down privatization leading to exclusion and gentrification. In response, these groups developed a public community garden in the same neighborhood as an alternative model for democratic horizontal urban greening.