Research & reports

Felix Chari, Bethuel Sibongiseni Ngcamu · Environmental & Socio-economic Studies · Sub-Saharan Africa

This narrative review searched Scopus, the Directory of Open Access Journals, Web of Science, Google Scholar and Academic Search (EBSCO) using terms including "urban farming," "urban agriculture" and "climate change" to synthesize literature on climate change's effects on urban agriculture in sub-Saharan African cities. While reviewed studies agree that climate change affects urban agriculture from production through processing, storage and distribution, integrated literature on the topic remains scarce, and the extent and magnitude of impacts differ by region, meaning adaptation and mitigation strategies cannot be applied universally and must instead be context-specific.

Abdelkarim Hamrita, Daniel Ferrer Jiménez, Hichem Rejeb · Frontiers in Sustainable Cities · Africa

A 2022 study analyzed the peri-urban agrifood system of the Sousse urban agglomeration, one of the most important in Tunisia, from a landscape perspective. It finds that clearly deficient regulations combined with uncontrolled urban development, together with intersecting political, environmental and economic factors, are threatening the survival of a traditional, largely family-based agricultural model built on mixed or polyculture production with predominant olive groves — a model the study describes as vital to the economic maintenance of many families and to food security. Using the Landscape Character Assessment methodology, the study proposes a landscape-project tool to strengthen the resilience and sustainability of peri-urban agriculture and prevent the loss of landscape heritage. It also points to the importance of integrating green infrastructure into land-use planning and to the need to promote Agricultural Parks, a protected status already recognized in Spain and other countries, putting forward specific proposals for the Sousse peri-urban agricultural landscape while insisting on the need to reform current forms of governance.

Celia Martínez Hidalgo, Jesús Ángel Martínez, Germán Camino · Institutional Repository of the University of Granada (University of Granada) · Spain

This is a description of the LIFE Lugo + Biodinámico project in Lugo, Spain, which uses a climate-adaptation urban-planning strategy intended to let Lugo — and, by extension, other mid-sized European cities — adapt resiliently to climate change. Framed around UN environmental objectives for resilient and sustainable cities, the project's actions include establishing an urban forest, designing Spain's first "multi-ecological neighborhood," constructing Spain's first public building built with Galician timber, and compiling a catalog of sustainable urban design solutions intended for export to other European cities. Among its 28 interrelated actions, the urban-agriculture component involves creating ground-level and vertical vegetable-garden zones within the neighborhood as spaces for both social interaction and food production, and a pilot initiative called "Impulso Verde" examines construction and planning measures intended to contribute to passive carbon sequestration.

Diep, Vu Bach, Dinh Hong Linh, Mai Viet Anh, Điep, Vu Bach · Zenodo (CERN European Organization for Nuclear Research) · Global

Against a backdrop of continuously shrinking agricultural land as it gives way to urban and industrial development, this article analyzes models of urban agriculture development in Thai Nguyen, a province in Vietnam's northern midland and mountainous region with strengths in urban agriculture, using descriptive, comparative, and analytical statistical methods over the period 2015–2020.

L. Tchoumi, Youta Happi J., Tchiadeu G.M. · Zenodo (CERN European Organization for Nuclear Research) · Sub-Saharan Africa

This study examined the impact of agricultural development on peri-urban ecosystem dynamics in Obala, north of Yaounde, Cameroon, using literature review, questionnaire surveys, semi-structured interviews, direct observation and Landsat satellite imagery from 1973, 1988, 2001 and 2020 analyzed with SPSS and ENVI. Between 1973 and 2020, mature forest declined from 5,694.23 ha to 1,635.25 ha, degraded forest grew from 123.56 ha to 1,739.80 ha, secondary forest fell from 10,298.13 ha to 9,993.43 ha, and savanna expanded from 3,891.8 ha to 5,819.25 ha, showing that expansion of food, market-garden and cash crops such as cocoa, combined with population pressure, is degrading peri-urban ecosystems.

Ana Spataru, Robert Faggian, Victor A Sposito · International Journal of Agricultural Resources Governance and Ecology · Global

A paper proposing a comprehensive conceptual framework for assessing metropolitan peri-urban agriculture. It argues that peri-urban agriculture provides non-commodity benefits — food security, farm viability, environmental stewardship, and landscape and socio-cultural preservation — that free markets under-recognize, and that the double vulnerability created by urban pressure and systemic agricultural change has led to myopic policy interventions. The proposed framework integrates the concepts of multifunctional agriculture, resilience, climate-smart agriculture and alternative food networks into 21 enabling features across five dimensions.

LENI MARIA TARIGAN, I MADE SUDARMA, I Nyoman Gede Ustriyana · Jurnal Agribisnis dan Agrowisata (Journal of Agribusiness and Agritourism) · Indonesia

A study of the agricultural sector's role, leading sectors and competitiveness in Tebing Tinggi City, North Sumatra Province, Indonesia, over 2015–2019, using descriptive analysis, the Location Quotient (LQ) method and shift-share analysis, prompted by rapid conversion of agricultural land in the city. Results show agriculture is not the largest contributing sector, with food crops driving most of the sector's growth; the city has 12 leading and 5 non-leading sectors, with a projected future of 5 leading, 7 prospective, 5 lagging sectors and no mainstay sector. Wholesale/retail trade and vehicle repair, and health and social services, were the sectors with good competitiveness. The study recommends using household yards for community gardens, fish ponds and livestock, implementing a "Culinary Tourism City" concept, and strengthening support for lagging sectors to maintain food security.

Luís Loures, Ana Pereira, Rui Alexandre Castanho · WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT · Europe

Using urban agriculture in Porto (Oporto), Portugal, as a guiding case study, this article works to recover and re-establish a continuous productive urban landscape. It expands existing urban planning policy and proposes new policy for protecting and inserting this continuous productive landscape into urban design while accounting for the urban/agricultural dichotomy and its processes, flows, and systems. Drawing on research focused on recovering Oporto's ancient rural ring, the article defines urban agriculture as a method for reliably integrating it into urban space planning, concluding with a newly defined urban farming network for Oporto that connects rural areas within the city to rural areas outside it.

Hae Jong Yang, Tae‐Woo Kang, Byungwoong Choi, Soon Hong Hwang, Dongseok Shin, Won-Pyo Park · Sustainability · South Korea

This study verified heavy-metal pollution levels in sediments of an urban-agricultural watershed in the Yeongsan River basin, South Korea, through evaluation of Sediment Quality Guidelines (SQGs), a pollution load index (PLI), and a potential ecological risk index (PERI), and analyzed statistical relationships between pollution levels, land use, and potential pollution sources. Pb, Zn, Cu, Cd, and Hg concentrations were highest at mid-upstream sites, while As, Cr, and Ni concentrations were similar across most sites. Sites showing potential toxicity to benthic organisms relative to SQGs were most frequently observed at mid-upstream, and PLI and PERI evaluations likewise confirmed high anthropogenic pollution and ecological risk there. Mid-upstream sites with high heavy-metal pollution correlated strongly with urban land use — the largest land-use category — indicating links to population density and industrial complexes; statistical analysis confirmed this relationship. The findings indicate that urban areas are highly likely to cause anthropogenic heavy-metal pollution of sediments via point and non-point sources such as domestic sewage and industrial wastewater.

Nurul Azizah, Dewi Ratih, U′ud Uda Marlina, Moch. Raihan Ramadhan · Jurnal Bisnis Indonesia · Indonesia (Surabaya)

In Wonorejo, Tegalsari district, Surabaya, Indonesia's second-largest metropolitan city, where land conversion to housing and public buildings has made greening difficult, residents used vertikultur (vertical, tiered plant cultivation with repurposed plastic bottles mounted on house walls) as a greening approach for limited land. The program's success was indicated by residents' enthusiasm and by aesthetic, health, and economic benefits reported from the practice.

Felix Chari, Bethuel Sibongiseni Ngcamu · Climate · Africa

In Masvingo City, Zimbabwe, a structured questionnaire administered to urban livestock farmers, triangulated with in-depth interviews with livestock stakeholders, examined how climate change-related hazards affect the urban livestock industry. Heatwaves, floods and droughts were found to significantly harm the industry: farmers lose livestock to disease, poor pastures and extreme weather, while the hazards also damage storage and distribution of livestock products, labour supply and productivity, and the profitability of livestock enterprises. The study calls for further research on location-specific adaptation strategies.

· JAcom 農業協同組合新聞（一般社団法人農協協会） · Japan

A December 2021 survey by Japan's Ministry of Land, Infrastructure, Transport and Tourism found that among 199 municipalities with productive green zones (seisan ryokuchi) designated in 1992 (total 9,412 ha), 86% (8,048 ha) had already been, or were expected to be, redesignated as "specified productive green zones," which extend agricultural preservation and tax benefits beyond the original 30-year period. 7% of landowners had no intention to redesignate, and another 7% were undecided. Tokyo had the highest redesignation rate at 92% (2,227 ha), followed by Saitama (85%), Chiba (87%), Kanagawa (87%), Aichi (75%), Kyoto (87%), Osaka (85%), Hyogo (87%), and Nara (87%).

Jan Eelco Jansma, Sigrid C. O. Wertheim-Heck · Land Use Policy · Netherlands

A paper (Land Use Policy, vol. 117, 2022, article 106104) analysing the peri-urban development of Oosterwold in Almere, the Netherlands, where 51% of the planning area is allocated to agriculture and left to residents' self-organisation. It classifies Northwest European peri-urban agriculture into three types and examines how new residents shaped the planning process, finding that agricultural practice in Oosterwold developed toward 'hobby garden farming'.

Jorgelina Hiba · Infobae (América/Soluciones) · Argentina

Twenty years after launching amid Argentina's 2001 economic crisis, Rosario's Urban Agriculture Programme now supports 360 jobs, this article reports: 30 hectares of urban gardens plus 120 hectares of peri-urban plots, over 300 gardeners (60% women) growing agroecological produce across 7 Park Gardens, sold through 39 outlets, with about 400 heirloom species and varieties held in the CAR seed bank.

Bárbara Corneli Colombatto · enREDando · Argentina

Built around interviews with huerteros (urban gardeners), this piece presents both the achievements and the limits of Rosario's urban agriculture: 7 Park Gardens and 6 group gardens involving over 250 people, 25 hectares producing 2,500 tonnes a year, and a $250,000 international prize won in 2021. It also documents organizational fragmentation among gardeners, a lack of secure land-loan agreements (comodatos), the absence of sustained public investment matching the programme's international recognition, and unresolved conflicts with neighbors that the municipality does not intervene in. It cites a regional statistic that only 18% of farms in Latin America and the Caribbean are run by women.

David Pearlmutter, Bernhard Pucher, Cristina Sousa Coutinho Calheiros, Karin A. Hoffmann, Andreas Aicher, Pedro Pinho, Alessandro Stracqualursi, Alisa Koroļova, Alma Pobrić, Ana Galvão, Ayça Tokuç, Bilge Baş, Dimitra Theochari, Dragan Milošević, Emanuela Giancola, Gaetano Bertino, Joana Castellar, Julia Flaszynska, Makbulenur Onur, Mari Carmen Garcia Mateo, Maria Beatrice Andreucci, Maria Milousi, Mariana Fonseca, Sara Di Lonardo, Veronika Gežík, Ulrike Pitha, Thomas Nehls · Water · Global

This paper proposes a new paradigm for closing urban water cycles using nature-based solutions, specifically green roofs and vertical greening systems (VGS). Simulations of VGS evapotranspiration performance in six cities (Copenhagen, Berlin, Lisbon, Rome, Istanbul, Tel Aviv) showed that VGS could recycle 44% (Lisbon) to 100% (Berlin, Istanbul) of rainwater roof runoff, with greywater bridging dry month shortages. Additionally, 27–53% of building greywater could be managed on greened surfaces.

Kamonashish Haldar, Katarzyna Kujawa-Roeleveld, Marco Schoenmakers, Dilip Kumar Datta, H.H.M. Rijnaarts, Jeroen Vos · Journal of Environmental Management · Bangladesh (Khulna)

This study assessed stakeholder awareness, perception, and willingness towards urban water reuse in Khulna City, Bangladesh, using a questionnaire with 385 urban respondents, 32 farmer interviews, one farmer focus group, and ten key informant interviews. It found an overall positive attitude among major stakeholder groups toward planned water reuse for peri-urban agriculture, with 53% of citizens willing to pay for wastewater treatment and 66% of farmers willing to pay for better-quality irrigation water. However, the public sector requires adjustments in rules and regulations, addressing issues like lack of transparency, coordination, and resources, to implement planned water reuse.

Thulani Dube, Saziso Sibanda, Phibion Chiwara · Cogent Social Sciences · Zimbabwe (Bulawayo)

This study investigated farmers' perceived effects of climate change on peri-urban agriculture in Bulawayo, Zimbabwe, and their adaptation methods. Using a sample of thirty peri-urban plots, findings revealed that farmers perceived significant climatic changes negatively impacting their farming activities, including reduced precipitation, increased atmospheric temperature, and diminishing borehole yields. Adaptation methods included repeated planting, watering plants at night, renting animal space in other farms with more water sources, and purchasing supplementary feed for livestock.

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.

Alexander Follmann, Maximilian Willkomm, Gilbert M. Nduru, George Owuor, Peter Dannenberg · Applied Geography · Kenya

This study analyzes the spatiotemporal dynamics of market-oriented urban and peri-urban agriculture (UPA) and farmers' responses to changing socio-spatial circumstances in Nyeri and Nakuru, Kenya. Findings indicate that the continued existence of market-oriented agriculture in these cities is linked to dynamic processes of commercialization, specialization, and intensification. The research concludes that market-oriented farmers are not inevitably displaced but can actively adapt to pressures and opportunities arising from rapid urban growth.

Julissa Basurto-Bajaña, Victoria Rendón-Ledesma, Oscar Caicedo-Camposano, Georgina Jácome-Lara · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · Ecuador

This study aimed to characterize peri-urban agricultural production systems in the Febres Cordero parish. It notes that food insecurity is not uniform across Ecuador, with rural Sierra regions showing higher concentrations of households lacking access to basic food baskets and a higher prevalence of chronic malnutrition. A multicriteria analysis was used to group surveyed families, illustrating their situation in the study area.

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.

Gabriela de Azevedo Marques, Iara Rafaela Gomes · Boletim Goiano de Geografia · Brazil

This empirical study analyzed the socio-spatial development of Urban and Peri-urban Agriculture (AUP) in Fortaleza, Ceará, Brazil, examining both spontaneous agricultural activities and municipal institutional actions. While AUP holds significant relevance in the city, particularly in peripheral areas, governmental initiatives were found to be sporadic and discontinuous, lacking a broader institutional agenda. The study concluded that despite recent municipal efforts, legal and institutional support for AUP remains weak, leading to the rapid disappearance of productive spaces and indicating that institutional actions have not effectively fostered the socio-spatial development of spontaneous initiatives.

Diana Maria Reyes Avalo, Misterbino Borgès Garcìa · DOAJ (DOAJ: Directory of Open Access Journals) · Cuba (Jiguaní)

This study in Jiguaní municipality, Granma province, Cuba, aimed to enhance the sustainable production and diversification of yam cultivation under agricultural drought conditions using biotechnological seeds. The accelerated yam seed production technology, combining biotechnological and conventional methods, was implemented in urban, suburban, and family agriculture. This led to the successful implementation of certified yam seed technology, increasing plant numbers from 2000 to 6000 in 2018 for a total area of 0.6 ha, and contributing to local development.

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.