Research & reports

Pierric Calenge, Maie Gérardot · Métropolitiques · United States (Cleveland)

The work by Max Rousseau and Vincent Béal illuminates the ambiguities of a policy that organizes urban decline and racial segregation in Cleveland. This policy promotes urban degrowth and racial segregation, balancing algorithmic management and urban greening. The study focuses on the Rust Belt region, which experiences de-urbanization marked by the subprime crisis, racism, and segregation.

Samina Raja · Urban agriculture · United States

Urban agriculture initiatives in US cities face complications, including information asymmetry and elite capture, which limit their potential for equitable development. This chapter introduces a volume exploring the opportunities and quandaries in addressing questions of equity in the research, pedagogy, and practice of planning for urban agriculture.

Cecil C. Konijnendijk · Edward Elgar Publishing eBooks · Global

This chapter examines the diverse uses of urban green spaces, encompassing recreation, biodiversity conservation, public health, and regulatory ecosystem services, with food production also re-emerging. Changing urban populations, including cultural diversity and ageing, have altered demands and uses. The study identifies a critical need to manage potential conflicts and trade-offs among these varied demands, despite many uses being able to coexist.

Nolwazi Z. Khumalo, Melusi Sibanda, Lelethu Mdoda · Sustainability · Sub-Saharan Africa

A systematic review and bibliometric analysis examined the implications of climate-smart agriculture (CSA) practices and climate adaptation strategies for food and income security in urban Sub-Saharan Africa. The review found that CSA practices boost urban food production and income, but also recognized critical challenges and trade-offs requiring urban agriculture transformation.

Laura E. Balis, Emily Shaw, Whitney Fung Uy, Katie Nelson, Maryan Isack, Laura Flournoy, Daniele Vest, Jessie Deelo, Amy L. Yaroch · Agriculture & Food Security · United States

This scoping review examined the environmental and health impacts of locally distributed specialty crops in the Midwestern United States, analyzing 9 grey and 19 peer-reviewed sources. While specialty crops positively impacted nutritional intake for diverse populations, the effectiveness of production practices on soil and plant quality and greenhouse gas emissions was mixed. The review concluded that more rigorous study designs with long-term follow-up are needed.

Melissa Anna Murphy, Pavel Grabalov · ˜The œGeojournal library · Europe

A study of urban agriculture initiatives in Aarhus, Denmark, and Rotterdam, the Netherlands, explored how municipalities facilitate urban agriculture and its performance in public spaces. It identified four public service trajectories: increasing access and animation, contributing to social services, producing and distributing food, and building communities. The study found that food production and social services may be little suited for urban spaces requiring high public access, although benefits can reach a broad public if localized and facilitated appropriately.

Yevheniia Varyvoda, Taylor Ann Foerster, Joona Mikkola, Matthew M. Mars · Sustainability · United States (Arizona)

This multi-method study in Southern Arizona, USA, explored the adoption of nature-based solutions (NbS) by local food entrepreneurs (LFEs) for climate adaptation. The findings revealed that existing NbS were primarily introduced through learning-by-doing practices, which were constrained by economic and technological resource limitations. Priority adaptation pathways identified for NbS included funding, financing, and knowledge co-creation, with LFEs likely to adopt NbS based on their ability to address climate issues and generate revenue.

Miles P.A. Bate-Weldon, Jill L. Edmondson, Katie J. Field · iScience · Global

This study investigated the effect of urban environmentally relevant concentrations of zinc in soils on nutrient exchange between arbuscular mycorrhizal fungi and pea plants using radio-isotope tracing. It found that at higher zinc concentrations, the transfer of phosphorus from fungi to plants and carbon from plants to fungi dramatically decreased. The results suggest that while urban horticulture has potential for food production, the unchecked presence of contaminants like zinc in urban soils may critically hinder its realization.

Anjoulie Brandner, Karolina Taczanowska, Brenda Maria Zoderer, Christoph Schunko · Urban forestry & urban greening · Austria (Vienna)

A survey of 458 respondents in Vienna, Austria, analyzed urban wild food foraging locations and preferences for urban green spaces (UGS). 1239 foraging locations were identified across 9 UGS types, with forest and meadow landscapes, parks, and UGS mosaics being most utilized. Foragers' major concerns were contamination from traffic and dogs.

Micaela F. Lipman, Marcia Caton Campbell · Urban agriculture · United States (Wisconsin)

This chapter examines local government food systems policy and planning in Madison and Dane County, Wisconsin. Despite a history of regulatory innovation in urban agriculture, the city and county have been slow to address food injustices in local food systems planning and policy development. The study highlights local government collaboration with the nonprofit sector and how codification of goals supports or hinders urban agriculture.

Ahmed Alhuseen, H. M. A. M. Omer, Eva Pauditšová, Hussein M. Sulieman, Mária Kozová, Pavel Cudlín · · Sudan (Khartoum)

A study assessed spatial accessibility disparities and users' opinions regarding public green spaces (UGSs) in Khartoum State, Sudan. Using GIS and questionnaires, it evaluated potential accessibility to 44 urban parks, community gardens, and city forests within 5, 10, and 15-minute travel intervals. Results showed inequitable access opportunities to UGSs, primarily favoring first-class residential areas. Within a 5-minute walking interval, the UGSs service zone covered less than 1% of the population. User opinion assessment revealed that 80% of parks required entrance fees, and the study concluded that UGS accessibility does not correspond to international quality of life indices.

Dragana Šunjka, Sanja Lazić, Slavica Vuković, Siniša Berjan, Hamid El Bilali · · Serbia

This chapter examines the food safety of urban agriculture systems in the Republic of Serbia through selected case studies. It highlights that agricultural products from urban production may be contaminated by polluted soil, water, and air, as well as by pesticides, heavy metals, persistent organic pollutants, nitrate and nitrite, and mycotoxins. The study emphasizes the need for strict control and reduction of synthetic pesticides and other agrochemicals in urban agriculture.

Mohammad Reza Khalilnezhad, Mohammad Taheri, Alessio Russo, Negin Nasseh, Ahmad Taheri · Cities & Health · Iran

This study investigated factors affecting lead and cadmium levels in urban fruits in Tehran's Tarasht neighborhood, Iran, due to heavy traffic and urban gardens. It found that sites taller than 10 meters had the highest cadmium, while sites without barriers or with 4-meter barriers showed the highest lead content. Barrier width, urban fruit tree height (for lead), distance to the street, and fruit type also influenced heavy metal absorption, indicating significant contamination risks.

Mitchell McLarnon · · Global

This chapter describes the practice, processes, and ethical tensions of using cell phones for visual data collection, representation, and analysis in school/community garden research projects. The findings suggest that while gardens and cell phones have the potential for enhancing experiential learning, increased well-being, and ecological awareness, their use needs to be highly contextualized within critical discussions related to settler colonialism, consumerism, neoliberalism, and (green) gentrification.

Nur Dinie Syahirah Sanusi, Fadhlina Che Ros, Siti Zulaikha Ngah Demon, Ismayadi Ismail, Imad Hamadneh · Journal of Advanced Research Design · Malaysia

This mini-review discusses the extensive use of AB mix nutrients in Malaysian urban farming, noting their role in high yields but also their contribution to significant environmental pollution when overused. Although a survey of local entrepreneurs showed most complied with guidelines for chili plants, intensive use of fertilizers leads to nutrient leaching into the soil, causing environmental pollution and affecting humans, livestock, and microbial life. The review emphasizes the need for controlled nutrient application to prevent soil degradation and groundwater contamination.

Muhammad Waqas, Kamran Ashraf, Muhammad Mohiuddin, Asim Abbasi, Khawar Sultan, Muhammad Umar, Hayssam M. Ali, M. Abdel-Hamid, Qamar Zaman · Notulae Botanicae Horti Agrobotanici Cluj-Napoca · Global

This study assessed heavy metal and metalloid concentrations in ridge gourd, soil, and irrigation water, finding that groundwater samples exceeded permissible limits for Ni, Fe, Cu, Pb, As, Cr, and Cd. Soil irrigated with groundwater showed Cd, Cr, and As above limits, and ridge gourd samples had higher Cd levels than safe limits. Consumption of ridge gourd from the studied area may pose health hazards due to elevated target hazard quotients for Zn, Fe, and Cr, and high cancer risks from Ni, Cr, Cd, As, and moderate risk from Pb in canal water.

Alessio Russo · Urban Science · Global

This paper synthesizes existing literature to examine the essential role of urban green spaces in fostering healthy living, emphasizing their strong positive associations with physical, mental, and social wellbeing. It discusses the importance of designing attractive and accessible green spaces that encourage physical activity and mental health, and the potential of local food production for diet improvement. The study also highlights disparities in access to quality green spaces, particularly between the Global North and South, advocating for equitable design strategies.

Wendy J. Heiger-Bernays, Alicia Fraser, Valerie Burns, Kerry Diskin, Diedre Pierotti, Kian Merchant-Borna, Michael D. McClean, Daniel J. Brabander, H. Patricia Hynes · Scholarworks (University of Massachusetts Amherst) · United States (Boston)

This study identified the nature and extent of soil contamination by polycyclic aromatic hydrocarbons (PAHs) from railroad ties and arsenic from chromated copper arsenate (CCA) pressure-treated lumber in a representative community garden in Boston. Elevated levels of PAHs and arsenic were present in the gardens studied, with these timbers serving as a continuous source of contaminants. This is the first study to investigate contaminants other than lead and evaluate the effect of adding city compost on select soil contaminants in urban garden soil.

Ivica Petríková, Melvine Anyango Otieno, Gertrude Were, Mahmoud Eltholth, Ana Rodriguez‐Mateos, Seeromanie Harding, Victoria Hall Morán, Odipo Osano, Jennifer Cole · Food Security · Kenya

This study investigated the links between peri-urban households' engagement in agriculture, their dietary behavior, and their children's nutrition outcomes around Eldoret, Kenya. Survey data collected from 518 households indicated that peri-urban households involved in agriculture, particularly crop growing and sales, had more diverse and nutritious diets than non-engaged households. However, a significant improvement in children’s health outcomes in these households was observed only when coupled with improved water, sanitation, and hygiene conditions.

Diana Elinos, M. Carolina Cruz, Andrea Loyo del Castillo, Mar Zamora, Grecia Karime Yebra Peralta, José Gabriel Reyes Fernández · Memorias del Concurso Lasallista de Investigación Desarrollo e innovación · Global

This study analyzed the impact of inorganic pesticides, highlighting their potential mutagenic and carcinogenic effects and negative impact on biodiversity, water, and soil contamination. It proposed a methodology for creating an organic pesticide and presented results on its efficacy in pest control. The study concluded that inorganic pesticides pose significant risks, while organic pesticides offer a safe and effective alternative, and emphasized the need to prioritize organic solutions in agriculture.

Arild Eriksen, Deni Ruggeri, Esben Slaatrem Titland · ˜The œGeojournal library · Norway (Oslo)

This essay discusses the motivations for co-creating urban agriculture in public spaces from the perspective of an architect and urban farmer/beekeeper practicing bottom-up, participatory design in Oslo. It critiques the current aesthetics of impermanence and temporality in urban agriculture and questions the idea that the joy and freedom it brings should be enhanced by future development and policy. The essay presents a rich collection of stories about regeneration, change, and collective action and cultivation, rather than a replicable model.

Divya Martolia, Ritu Gupta, Naresh Kumar Chhuneja · Journal of Community Mobilization and Sustainable Development · India (Ludhiana)

In Ludhiana city, India, a study investigated the prevalence of hand discomfort among 150 male gardeners from educational institutions, community gardens, and nurseries. Findings revealed that the comfort level for most respondents using gardening hand tools ranged from moderate to low, with increased pain and discomfort reported after using certain tools. The Cornell Hand Discomfort questionnaire showed that the majority experienced slight to moderate pain and discomfort in different hand regions, which interfered with their work performance.

Rob Roggema, Aleksandra Krstikj, B. J. Erazo Flores · Nutrients · Mexico (Monterrey)

This study in the Noreste of Mexico, focusing on Monterrey, investigated spatial and non-spatial barriers to adopting healthy diets and accessing plant-based foods. Findings revealed significant disparities in food access across the Monterrey metropolitan area, with central urban zones having superior access to fresh foods compared to suburban and peripheral regions. This inequality disproportionately affects marginalized areas with higher poverty rates, worsening food insecurity.

Fernanda Olivares, John Clunes, Susana Valle, Dorota Dec · Agro Sur · Chile (Valdivia)

This study evaluated the quality of irrigation water in urban gardens in Valdivia, Chile, against Chilean standards NCh 1333 and NCh 409. Measured parameters included pH, electrical conductivity, total dissolved solids, and iron concentration. All urban gardens met the established standards, with the exception of the Collico garden, which showed an elevated iron concentration.

Hayato IIDA, Yasushi Kyutoku, Wakana KUDO, Yoshiki HARADA · Transactions of Japan Society of Kansei Engineering · Japan (Tokyo)

This study investigated whether the UGS (Urban Green Space Scale), an impression evaluation scale for Tokyo's urban green spaces, could assess impressions of two urban rooftop gardens with flat versus stepped spatial configurations. Based on an online questionnaire (N=670), confirmatory factor analyses indicated a poor or unacceptable fit of urban rooftop gardens to the UGS. Exploratory factor analyses yielded different factor structures, suggesting that new scales are required for evaluating impressions of urban rooftop gardens.