Research & reports

Ermias Debie · City and Environment Interactions · Ethiopia

A study in Bahir Dar, Ethiopia examined the integration of urban agriculture (UA) and green infrastructure (GI) through surveys and interviews with 99 stakeholders, supplemented by participatory observation. The main barriers to integration, based on multiple-response data, were a lack of supportive policies and regulatory frameworks (87%), limited awareness (57%), and space constraints (51%). Multicriteria decision analysis ranked integrated practices as the most effective strategy (score 16.81), followed by edible tree planting at garden centers (16.18), small gardens (13.83), and fence-edge greening (11.46). Structural equation modeling identified thermal regulation and access to fresh food as critical factors for planning sustainable urban systems.

Edwin Javier Ortega Zúñiga · Ediciones Comunicación Científica eBooks · Colombia

A study of Palmira, Colombia — a city with a long tradition as the country's agricultural capital — finds that it nonetheless faces significant food insecurity. Prior research reviewed in the study attributes this to an aging rural population and young people's declining interest in farming (which has shrunk the available labor force and limited adoption of new technology), gender inequality that restricts women's access to agricultural resources and decisions, climate change impacts such as droughts and floods on production, and accelerated urbanization that has reduced cropland and fragmented the agricultural landscape. As a potential response, the study describes a pilot project at four sites in the city that installed small-space vegetable production systems, which it reports functioned as a viable source of fresh food in dense urban settings. The authors call for a multidisciplinary approach combining social, economic and environmental factors to address food insecurity in Palmira.

Jacob Wallace · Waste Dive · United States

NYC's Department of Sanitation began enforcing mandatory curbside organics separation on April 1, 2025, issuing nearly 2,000 summonses in the first week, but Mayor Adams paused broad enforcement through 2025 on April 18, limiting fines to persistent violators. The city had distributed about 190,000 free bins and sold 63,000 more, and organics diversion had risen 65% from FY2022 to FY2024.

Consell de la Generalitat Valenciana · Diari Oficial de la Generalitat Valenciana (DOGV) / BOE · Spain

A decree-law issued by the Consell (Valencian regional government) on 4 February 2025, published 5 February 2025, amending the 2018 Huerta law and its implementing plan (Decreto 219/2018) to simplify administrative procedures for reconstruction following the 29 October 2024 DANA flooding. It abolishes the Huerta Council and chapters on agrarian development planning and farm inventories, and relaxes urban-planning parameters for agricultural buildings.

Bauer W., Titz A. · Nature-Based Solutions · Malawi (Lilongwe)

Urban Nature-based Solutions (NbS) are promoted globally as multifunctional and cost-effective, and municipal interest is growing in cities of the so-called Global South. Yet research remains clearly biased toward the Global North, with particularly few studies on cities in Sub-Saharan Africa — leaving a high risk that maladapted NbS, modelled on examples from elsewhere that do not meet local requirements, get adopted. This article examines the barriers to adopting urban NbS in Malawi's cities and the opportunities for successful implementation, drawing on qualitative data (workshops, narrative expert interviews, group discussions) gathered over five research stays in Lilongwe between 2022 and 2024, and analysing in detail the strategies used by those implementing the Lilongwe Ecological Corridor Initiative (LECI), a large-scale NbS in the capital.

Zhe Zhu, Faith Ka Shun Chan, Gang Li, Mengxia Xu, Meili Feng, Yong‐Guan Zhu · Soil & Environmental Health · China

This review examines urban agriculture in China, identifying three forms: small-scale, capital-intensive, and tourism-type, each with benefits and challenges shaped by local context and government policies. Despite benefits like improved community cohesion and environmental sustainability, urban agriculture in China faces significant limitations including land availability, capital shortage, market access, and insufficient governmental support. Strategies and four recommendations are proposed to address these challenges.

Neşe Börü · International Journal of Leadership in Education · Turkey

This case study investigated school principals' practices and barriers to sustainable development in Turkish K-12 schools under centralized management, using semi-structured interviews. The findings highlighted the need for leadership skills, collaboration with external bodies, public education, reward systems, and school budgets under a centralized management approach. The research identified that the centralized management system itself presents a barrier to sustainable development efforts in these schools.

Ashagrie Gibtan, Wondwosen Abera, Mekuria Delelegn, Molla Maru, Adamu Emiru · Ochrana prírody Slovenska/Ekológia · Ethiopia

Land Use/Land Cover (LULC) dynamics were analyzed in four Ethiopian cities—Addis Ababa, Hawassa, Bahir Dar, and Adama—over 17 years from 2006 to 2022. SPOT 5 and Sentinel satellite imagery, key informant interviews, focus group discussions, and field observations were used. Findings revealed a rapid expansion of urban built-up areas, primarily at the expense of peri-urban horticultural lands, which has an adverse impact on the sustainability of urban agriculture.

Anila Kausar, Viola Vambol, Sergij Vambol, Saima Sultana Sharfi · International Journal of Economic and Environmental Geology · Pakistan (Karachi)

This study conducted a Land Use Land Cover (LULC) analysis of Murad Memon Goth, a peri-urban area of Karachi, Pakistan, comparing data from 2013 and 2021. The results revealed a 9.6% increase in settlement sprawl, indicating significant encroachment on agricultural lands. Cropland area decreased from 38.86% in 2013 to 26.11% in 2021, highlighting a negative trend for peri-urban agriculture in the region.

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

This chapter reflects on urban agriculture practices in public spaces, emphasizing their unique role in the individual and communal well-being of city dwellers. It concludes with a brief reflection on the future trajectories for urban agriculture practices in compact cities.

Barbara Maćkiewicz, Paulina Jeziorek · Przegląd Geograficzny · Poland

A two-case study in Warsaw and Poznań, Poland, explored the relationship between community gardens and cultural institutions, identifying factors that promote and impede their functioning. The study found that these gardens are characterized by a changing governance model, shifting towards a top-down approach where community members lack influence on strategic decisions. The involvement of cultural institutions, while facilitating longevity, may simultaneously disempower the gardens' viability.

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.

Matthijs T. Wessels, Gert Jan Veldwisch, B.J.M. van Vliet, Alphonce Kyessi, Shaaban M. Mgana · Water International · Tanzania (Dar es Salaam)

This study examined the policy dynamics of irrigated urban agriculture in Dar es Salaam, Tanzania, using stakeholder interviews and a literature review. It found that while irrigated urban agriculture is positively received for its productivity, it faces challenges from discourses prioritizing health and modernity. Authorities pursue modern farming models, but most urban farmers operate with informal and insecure access to land and water, highlighting a tension between planning ideals and urban reality.

Meriem Korchi, Ouassila Bendjaballah · Indonesian Journal of Social Science Research · Algeria

This study assessed urban actors' perspectives on urban agriculture in Annaba, Algeria, and mapped agricultural activities to integrate them into urban policy. Interviews with decision-makers and farmers, combined with spatial analysis, revealed that while there is interest in urban agriculture, it is not effectively integrated into institutional and legal frameworks. Agricultural plots in cities are often reserved for future urban development.

Sarah Bell, Charlotte Johnson, Tse‐Hui Teh, Kat Austen, Gemma Moore · · United Kingdom (London)

This chapter explores co-design in developing urban infrastructures, presenting a six-step "Bottom-Up Infrastructure" model. The method was applied to a rooftop garden on a London social-housing estate, intended to function as drainage infrastructure. The case study revealed the potential for co-design, but also highlighted significant constraints on implementation in cities where communities possess limited power and resources.

Jeffrey Chiwuikem Chiaka, Gengyuan Liu, Hui Li, Wen Zhang, Mingwan Wu, Zhaoman Huo, F. Gonella · Environmental and Sustainability Indicators · Sub-Saharan Africa

This study evaluated land cover change and its drivers using spatial and statistical analysis in 22 designated protected areas (PAs) across the tropical coastal regions of sub-Saharan Africa. Results indicated that food production is prevalent in these protected areas regardless of their designation, and forest loss occurred in most PAs, suggesting weak conservation. Population density was the most significant driver of land cover change, and only 15 out of 22 protected areas showed an increase in their total ecosystem service value.

Nour Alkhaja, Khaled Alawadi, Kholoud Almemari, Ghalya Alshehhi · Progress in Planning · Global

This literature review of 51 articles examines how urban agriculture (UA) is practiced, institutionalized, and sustained, focusing on governance. It identifies consistent challenges such as discord between civil and municipal actors, contextual factors hindering supportive policies, and urban densification encroaching on UA land. These issues lead to informal or constrained UA practices and tenure insecurity.

Lesli Hoey · Urban agriculture · Global

This paper highlights that urban agriculture (UA) serves as a vital lifeline for food and income security for many urban growers in the Global South. However, it notes that many governments in the Global South actively resist UA in the name of "modernization," and by promoting supermarkets and restricting informal food markets, they potentially undermine the positive impacts of UA on urban food security and poverty.

Diana Krabbendam, Emiel Wolf, Bernie Deekens, Rosalie Bak, Hans Krikke · SpringerBriefs in applied sciences and technology · Netherlands (Amsterdam)

This chapter outlined activities for citizen-led projects in the Wildeman neighborhood in Amsterdam. The main challenges identified were a lack of trust and community feeling among inhabitants, a lack of involvement and ownership in neighborhood developments, and fragmented existing community activities and services.

Paula Restrepo · · Colombia (Medellín)

As part of the Red de Huerteros Medellín (RHM) collective, urban agriculture in Medellín was mapped to identify its features and problems. A main problem found was a poor or non-existent connection between urban farmers and key organizations like seed keepers. Few urban farmers had knowledge about the ecopolitical implications of the seed business, and even fewer obtained seeds from seed keepers or showed consideration for their labor.

Ángeles Donoso Macaya, Kendra Sullivan · · United States (New York City)

This chapter explores the experiences of co-authors in the "Archives in Common (AiC)" project, which aimed to strengthen public humanities infrastructure within and beyond CUNY’s Graduate Center. Conducted across three locations in New York City, the project highlighted institutional norms that fail to adequately support community-led research practices or acknowledge and reward diverse expertise.

Amélie André · · United Kingdom

This case study of Letchworth Garden City examined the interplay between the town's layout, social practices, and governance supporting a local sustainable food economy. Food mapping and an ethnographical approach showed how Letchworth's masterplan provides a backbone for alternative food infrastructure, though the edible landscape is not always visible or effective for residents. Discussions with experts also pointed to a gap in coordination among key local stakeholders, which would be beneficial for improving the local urban food strategy.

Ann-Kristin Steines, Michele D’Ostuni, Anna Wissman, Kathrin Specht, Chiara Iodice, Runrid Fox-Kämper, Francesco Monticone, Isabella Righini, Véronique Saint-Gès, Antonella Samoggia, Francesco Orsini · Cities · Europe

This research addressed international and national policies, as well as related constraints and challenges affecting City Region Food System (CRFS) development in six European countries. Data was collected through desktop research, stakeholder interviews, and a workshop. The study found that planning laws restrict possibilities for food production in cities, and legal frameworks prevent the marketing and sale of food produced by non-commercial actors or informal farmers. It also identified a need to expand vocational training in the agricultural sector.

Waseem Ahmed Khattak · International Assulta of Research and Engagement (IARE) · Pakistan

"Go Green communities" in Pakistan were studied as grassroots movements promoting environmental awareness and sustainable practices. Using a Participatory Action Research (PAR) approach, activities included waste management, urban gardening, and policy advocacy. The initiative demonstrated increased community involvement in eco-friendly efforts, leading to tangible outcomes such as waste segregation systems and enhanced green spaces. However, challenges including financial limitations, resistance from industries, and restricted access to green technologies highlighted the need for stronger institutional support.

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.