Research & reports

Raktima Ghosh · · India (Kolkata)

This study examined the roles and emergent risks of urban and peri-urban agriculture (UPA) in the Kolkata Metropolitan Area, India, using a mixed-method approach combining empirical findings and geospatial techniques. Field observations and land use land cover (LULC) mapping validated land conversion patterns and the spatial shrinkage of UPA in the Kolkata metropolis. The study revealed current socioecological changes and governance patterns in the context of UPA, indicating that UPA faces multiple challenges arising from land-use transformations, privatization of lands, and changing social equations in the city.

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.

Pablo Torres Lima, Kristen Conway-Gómez, Karla Almanza-Rodríguez · Frontiers in Sustainable Cities · Mexico (Mexico City)

This study examined local community involvement in governance processes in Milpa Alta, a peri-urban agricultural area of Mexico City, using surveys, interviews, and participatory workshops. It found that Milpa Alta lacks integral adaptive capacity to address urban pressures, environmental deterioration, and agricultural dynamics. Limited participation, low local organizational levels, and distrust of government institutions hinder effective governance, indicating that a "local is not enough" approach is insufficient for adaptive governance in this peri-urban context.

Alisara Menakanit, Vudipong Davivongs, Prapassara NAKA, Nath PICHAKUM · Journal of Urban and Regional Analysis · Thailand (Bangkok)

This study investigated land use changes and landscape fragmentation in prime vegetable production areas within Thawi Watthana district, Bangkok, Thailand. A GIS database was used to analyze land use proportions, changes in vegetable production areas, and land configurations from 1976 to 2015. The results showed that vegetable production areas decreased at a rate of 20.38 ha/y, despite the district being designated as an agricultural area in Bangkok's land use planning policies. Fragmentation of the vegetable production matrix increased due to expanded road networks and contiguous roadside urban development.

Imen Bendjemila, Salah Chaouche · Prostor : znanstveni časopis za arhitekturu i urbanizam · Algeria

This study investigated urban growth and urbanization in N'Gaous, Algeria, over the last 60 years, using an analytical approach and Geographic Information Systems to assess the agronomic potential of soils. It found that N'Gaous experienced significant urban sprawl, with its land area expanding over ten times and population increasing more than six times, leading to serious issues for peri-urban orchards. The study quantified and monitored the agricultural potential consumed by construction, highlighting the negative impact of urban expansion on agricultural land.

Subhash Aswal, Harshal Purohit, P. K. Gupta, K. K. Yadav, Laxman Jat, Shipra Jaiswal, R. A. Kaushik · International Journal of Plant & Soil Science · India (Kota)

A quarterly survey in Kota district, Rajasthan, India, characterized wastewater-irrigated soils by comparing them with tube well water-irrigated soils from ten urban sites. The study found decreased sand content, pH, and dehydrogenase activity, while porosity, EC, BOD, COD, OC, available-NPK, SO4, Cl, and heavy metals (Mn, Fe, Zn, Cu, Ni, Cd, Pb, Cr) increased. Some parameters exceeded Indian standard permission limits, indicating contamination, with highest values observed in summer.

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.

André Torre, Brenno Fonseca · Sociologia Ruralis · Brazil (São Paulo)

A study on the development of peri-urban agriculture in the São Paulo Metropolitan Region, Brazil, was conducted based on expert interviews, analysis of the regional daily press, and local information sites and blogs. It was found that territorial opposition between different land uses is one of the main factors preventing food production in urban and peri-urban areas. The study investigated local conflicts, their location, their link to agriculture, the consumption of agricultural soils, and the typology of opponents and supporters of this activity.

Enagnon Arsène Euloge YAOVI, Martial WOROU, Bola A. MALOMON, Sylvain A. VISSOH · International Journal of Progressive Sciences and Technologies · Africa

This research in the Arrondissement of Zinvié, Africa, investigated agricultural land governance through surveys of 109 people and field observations. Findings indicate rapid urbanization is causing anarchic land occupation and uncontrolled consumption of agricultural space, with renting being the dominant land access mode (50%). From 2010 to 2020, cultivable land decreased by 517.69 hectares due to urbanization, highlighting significant governance challenges.

Rafael Lima Oliveira, Gabrielly Dos Santos Lima Oliveira, José Raimundo Oliveira Lima · P2P E INOVAÇÃO · Brazil

This study investigated the role of cooperativism as an element for strengthening urban and peri-urban agriculture (AUP) in Brazil. Findings revealed that the absence of public policies and credit availability are limiting factors for AUP. Increased production and product outflow are also difficulties faced by these farmers, which could potentially be resolved through cooperation.

Gamuchirai Chakona · · South Africa

A study surveyed 314 randomly selected households in four peri-urban settlements in South Africa to assess dietary diversity and food security. Findings revealed generally low dietary diversity and high levels of food insecurity across all sites, with male-headed households experiencing worse conditions than female-headed households. Food insecurity was linked to high poverty, unemployment, and low education levels.

Anne-Louise Fritz, Ramia Jannoura, René Beuschel, Christoph Steiner, Andreas Buerkert, Rainer Georg Joergensen · Chemical and Biological Technologies in Agriculture · Africa

This 2-year study in semi-arid Ouagadougou and sub-humid Tamale, West Africa, measured the effects of biochar and N fertilization on soil microbial biomass carbon, fungal ergosterol, and functional diversity. Sole biochar addition did not affect soil chemical or biological properties, but biochar with N fertilization increased microbial respiratory response. N fertilization decreased soil pH by 1.1 units in both cities, and a pH of 4.7 led to reduced microbial biomass carbon and ergosterol contents in Tamale. An N fertilizer-induced decline in soil pH below 5 should be avoided, as it decreased microbial biomass carbon and microbial functional diversity.

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.

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.

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.

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.

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.

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.

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.

Harniati Harniati, Reni Suryanti · Jurnal Penyuluhan Pertanian · Indonesia

This study investigated urban farmers' accessibility to agroinputs in intra-urban (Situ Gede, Margajaya) and peri-urban (Pasir Buncir, Pasir Eurih of Tamansari) areas in Indonesia. The findings revealed that land, labor, feed concentrate, fertilizer, and seeds are difficult for farmers to access. Specifically, peri-urban paddy land ownership is less than 0.2 Ha, intra-urban farmers are landless, outside labor is limited and expensive, and feed concentrate for sheep is rarely available and unaffordable. These limited accessibilities present problems and challenges for urban agribusiness development.

Fatiha Hakimi · Journal of Analytical Science & Technology · Morocco (Rabat)

This study assessed the practices, roles, and challenges of peri-urban farming in the metropolis of Rabat, Morocco, surveying 50 respondents. Peri-urban agriculture is a multifunctional activity contributing to job creation, income generation, food supply, and environmental beautification. However, it faces several constraints, including precarious and costly labor, absence of regulating laws, lack of training and technical supervision for peri-urban farmers, and water resource shortages.

Sofia Nikolaidou · Cahiers de la Méditerranée · Greece (Athens)

This article analyzed the role of peri-urban agriculture and alternative food networks (AFN) in the Athens metropolitan area, Greece, using a mixed method approach including qualitative, quantitative research, and spatial data collection. Bottom-up claims for food security positively impacted sustainable food systems and public policies, while informal retail channels and self-production schemes strengthened agricultural resilience. However, poor land management and zoning control are major constraints to sustainable agricultural production and farmers' resilience in the Athens metropolitan area.

Shwan Mohammed, P. K. Nyade, Mohamad Abdulhamid, I. O. A. Hodgson · Water Science · Ghana (Accra)

This study assessed urban water quality parameters of the Nima Creek in Southeastern Accra, Ghana, sampling water from six locations. The results showed high enrichment of nutrients (ammonia, nitrate, phosphate) and elevated levels of BOD, COD, and grease at sites receiving solid and liquid wastes. Physicochemical parameters like conductivity, TSS, and TDS also exhibited elevated values, indicating significant contamination that poses challenges for sustainable urban agriculture.