Research & reports

Ana María Bartolomé Sualdea, Beatriz Urbano · Revista española de estudios agrosociales y pesqueros/Revista española de estudios agrosociales y pesqueros · Spain

A case study of Palencia, in Castilla y León, Spain, analyzes urban agriculture's potential to address new challenges facing cities. It examines the challenges set out in the city's Sustainable and Integrated Urban Development Strategy (EDUSI) and urban agriculture's possible contribution to them, calculates the potential from recovering abandoned horticultural land using geographic information system agricultural data, and conducts semi-structured surveys and site visits with managers of urban agriculture initiatives. Results show a drastic decline in horticultural land in Palencia city alongside large multifunctional recovery potential, but existing urban agriculture experiences indicate a need for dedicated managers, detailed analysis of usable agricultural land, resolution of land allocation, and greater support and regulation to develop urban farming models serving social, occupational, leisure, participatory and productive functions.

Eugenio Antonio Climent López, Raúl Lardiés Bosque, Samuel Esteban Rodríguez · Boletín de la Asociación de Geógrafos Españoles · Spain

Since the 2008 crisis, alternative economic practices to the dominant system have proliferated, especially in urban areas where new social movements have taken stronger root. This study examines Zaragoza, Spain, governed in the previous legislative term by a new-left coalition, one of the so-called "councils of change." It selected practices operating at the local scale through unconventional procedures: community urban gardens, agroecological consumption markets and groups, community currencies (time banks, barter markets, and social currency), and self-managed social centers. A qualitative methodology combined semi-structured interviews with closed questionnaires and participant observation. These practices were found dispersed across the urban space and linked to urban social movements and local politics. The study concludes that their impact is limited in quantitative terms, but that they hold broad transformative potential owing to the characteristics of their practitioners and the support of local administration.

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.

Scarano A., Semeraro T., Chieppa M., Santino A. · Horticulturae · Italy

Review of neglected and underutilized plant species from the Apulia region of southern Italy, highlighting their adaptive, nutritional, and economic potential and the case for re-including them in the daily diet.

· Water · Germany (Berlin)

Analyzes the causal relations of upscaled urban aquaponics with the food-water-energy nexus, using Berlin as a case study.

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.

Barbara Maćkiewicz, Raúl Puente Asuero · Urban forestry & urban greening · Spain (Seville)

This paper compares public and private urban allotment gardens (AGs) in Seville, Spain, as nature-based solutions (NBS). Both types of AGs are found to have positive impacts on user health and well-being and complement each other. The choice between public and private AGs is primarily linked to freedom of cultivation and access, rather than economic factors. The study concludes that both public and private AGs require integrated territorial, legal, and institutional frameworks within urban policies.

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.

Marco Medici, Maurizio Canavari, Alessandra Castellini · Journal of Cleaner Production · Italy

This study investigated the status and evolution of Community Supported Agriculture (CSA) in Italy, examining its social, environmental, and economic benefits. Using CSA data, participant observation, thematic network analysis, and interviews with CSA representatives, it found that Italian CSA generally meets sustainability goals, though with varying levels of member involvement, economic viability, and environmental impact across communities. The lack of policy support is hindering further CSA diffusion and consolidation.

Luca Colombo, Stefano Grando, Giacomo Lepri · · Italy (Rome)

A desk-based analysis on urban agriculture in peri-urban Rome scrutinized policy documents, mass media articles, online news, and internal organizational documents pertinent to land access and urban agriculture. This study was conducted against the backdrop of competition over farmland use, control, and function in Europe, and how land value trends in Italy are conditioned by the land's potential.

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.

Miriam C. Dobson, Philip H. Warren, Jill L. Edmondson · Sustainability · United Kingdom

This nationwide citizen science project investigated resource demands of urban horticultural production in the United Kingdom using year-long diaries from 163 allotment gardeners. Findings showed an average allotment required 87 annual visits and 139 km of travel. Each kilogram of food produced used 0.4 hours of labor, 16.9 L of water, 0.2 L of topsoil, 2.2 L of manure, and 1.9 L of compost.

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.

Peter Clark · · Europe

This chapter explores the historical trajectory of large urban parks and the broad pattern of urban green space from the pre-modern period to the present day in European cities. It notes that urban green spaces, including large urban parks, have faced significant financial, development, and management challenges in recent decades. However, these parks have also benefited from inter-city competition, as large green areas are crucial for a city's international identity and attractiveness.

Nurhan Koçan, Gökhan BALIK · Karadeniz Fen Bilimleri Dergisi · Turkey (Istanbul)

This study focuses on a landscape design project for the Historical Yedikule Gardens in Istanbul, an urban agriculture area with 1500 years of history. The project aimed to reorganize the farmland to enhance its contribution to the urban green space system, provide economic gain and hobby areas for citizens, and preserve its cultural past. Conducted under historical environmental protection and urban agriculture area regulation principles, the renewed area, with its historical, cultural, and economic values, is shown to contribute to both users and the city.

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.

Emmanuelle Virey, Tolga Coskun · Cahiers ESPI2R · Europe

Green infrastructure refers to an interconnected network of natural or semi-natural areas whose proper functioning generates benefits for human societies and strengthens their resilience. It can simultaneously produce multiple benefits such as improved stormwater management, creation of cool islands and species habitats, job creation in urban agriculture, economic valuation of real estate, and new nature experiences. Green infrastructure allows for the reinvention of urban landscapes and a reconsideration of our intimate relationship with living things.

Peter Gittins, Leigh Morland · The International Journal of Entrepreneurship and Innovation · United Kingdom

This case study explored the business model and growth challenges of 'Growing Better', a micro-social enterprise urban farming facility in the Leeds City Region, UK, which provides a supportive working environment for people with mental health issues. Findings suggested that the potential for growth lies with the social entrepreneur's ability to harness external stakeholder support. However, any venture development should also inform the effective utilization of resources through operations management.

Alessandra Piccoli, Adanella Rossi, Angela Genova · Sustainability · Italy

To understand the potential of the Community Supported Agriculture (CSA) model in Italy, two investigations were conducted in 2019 and 2020, analyzing structural and organizational aspects, and resilience during the COVID-19 pandemic lockdown. Findings indicate that CSAs represent a radically innovative experience capable of redefining production and consumption practices, demonstrating remarkable resilience due to their common value basis and strong interdependence and solidarity among members.

Lael Walsh, Bethan R. Mead, Charlotte A. Hardman, Daniel Evans, Lingxuan Liu, Natalia Falagán, Sofia Kourmpetli, Jessica Davies · Environmental Research Letters · United Kingdom

This study provides a national-scale analysis of the horticultural production potential of urban green spaces in Great Britain (GB). It identifies urban green spaces available for horticultural production and quantifies potential yields based on three production options. Urban green spaces in GB, at their upper limit, have the capacity to support production 8 times greater than current domestic fruit and vegetable production, or 38% of current domestic production and imports combined. Most urban green spaces consist of private residential gardens and amenity spaces, and all examined towns and cities were found to have substantial potential to meet the dietary needs of the local urban population.

Damian Maye, Paul Swagemakers, J.S.C. Wiskerke, Heidrun Moschitz, James Kirwan, Ingrid Jahrl · European Urban and Regional Studies · Europe

This study utilized the 'sustainable innovation journeys' concept to trace urban food initiatives in Rotterdam (Netherlands), Vigo (Spain), and Zurich (Switzerland) over a six-year period from 2013 to 2018. While micro-level innovation practices can induce sustainability shifts, particularly when aligned with policy interests, the study also observed potentially negative impacts due to a lack of alignment at the initiative or city-region levels.

Gina Patricia Suárez‐Cáceres, Víctor M. Fernández‐Cabanás, José Lobillo-Eguíbar, Luis Pérez‐Urrestarazu · Aquaculture International · Spain

This study aimed to determine the profile and motivations of aquaponic producers, the characteristics of facilities, and production performance in Spain and Latin America. The average producer is a middle-aged man, motivated primarily by producing high-quality, healthy food, environmental concern, and autonomy. Facilities were mainly for education, self-consumption, and hobbies, many located on rooftops, adapting well to urban agriculture. Generally, there is a lack of proper knowledge and expertise to efficiently operate these complex systems.

Sam Ramsden · Local Environment · United Kingdom (England)

This article analyzes a charity-led community gardening project in a disadvantaged northern English community, which operated for three years with external funding. While it successfully engaged marginalized people, leading to increased skills, confidence, reduced isolation, and improved wellbeing, the project faced significant challenges requiring professional management. Crucially, after the funding ended, the community garden's future was fragile, and the long-term sustainability of outcomes for marginalized participants was vulnerable due to economic viability issues.

Perla Zambrano-Prado, Joan Muñoz‐Liesa, Alejandro Josa, Joan Rieradevall, Ramón Álamús, Santiago Gassó, Xavier Gabarrell · Sustainable Cities and Society · Spain (Barcelona)

This work established a remote sensing framework to identify and analyze the technical feasibility of roofs for integrating urban agriculture, rainwater harvesting, and photovoltaic systems. Applied to a region north of Barcelona, the study found that 8% of the roof area was feasible for tomato and lettuce production, potentially satisfying 210% of average tomato intake and 21% of average lettuce consumption. Rainwater harvesting systems could supply 94.26% of water for open-air lettuce and 53% for rooftop greenhouse tomatoes, while 50% of roofs were suitable for photovoltaic panels, representing 18% of citizens' average energy consumption.

Susana Toboso‐Chavero, Cristina Madrid‐López, Xavier Gabarrell, Gara Villalba · Environmental Research Communications · Spain (Barcelona)

Implementation strategies for food-energy-water production systems on urban rooftops were evaluated in a typical housing estate in the Metropolitan Area of Barcelona, comprising 201 buildings and 13,466 inhabitants. Residents tended to choose strategies providing energy and water over the food production potential of rooftops. However, environmental assessment indicated that vegetable production alternatives were the least impactful, meeting 42-56% of residents' fresh produce demand and reducing environmental impacts by 24-37 kg CO2 eq m-2 per rooftop per year. This suggests residents were primarily concerned with energy expenses rather than food insecurity or social cohesion.