Research & reports

Zhuoran Yan, Wenbo Li, Lingxue Yu, X W Li, Kun Bu, HuanJun Liu · npj Urban Sustainability · China (Changchun)

This study investigated the summer impact of peri-urban agriculture (PUA) on surface urban heat island (SUHI) mitigation across China using time-series satellite observations and a coupled land-atmosphere model for Changchun City. It found that PUA management changes with urbanization pressure, and widespread agricultural marginalization near cities significantly impacts SUHI during summer. Larger cities derive less thermal benefit from PUA, although an agricultural intensification scenario showed a limited average cooling effect of 0.07–0.16 °C on urban cores.

Paris Pencharz, Peter H. Verburg, Pierre Chopin · Landscape and Urban Planning · Europe

This study investigated the conditions enabling urban agriculture (UA) at a 1 km² scale across 11 large European cities. The intercity model suggested that UA is more likely found in greener, central neighborhoods with lower property prices and lower proportions of locally born residents. However, there is not a consistent set of factors implying UA presence, suggesting other social and policy factors might be at play.

Adili Y. Zella · African Journal of Social Issues · Tanzania

This study analyzed land use and land cover (LULC) changes in Kinondoni District, Dar es Salaam, Tanzania, between 1993 and 2023 using multi-temporal Landsat satellite imagery. The analysis revealed that built-up areas expanded by 1,433%, from 124.20 ha in 1993 to 1,905.14 ha in 2023. Concurrently, cultivated land decreased by 96.6%, from 172.90 ha to 5.88 ha, representing a loss of 167.02 ha. The near-complete elimination of cultivated land in Kinondoni District indicates a critical threat to local food production capacity and urban food security.

Agnes G. Kapinga, Baraka F. Lenga · Urban Agriculture & Regional Food Systems · Tanzania (Dar es Salaam)

A qualitative case study in Dar es Salaam, Tanzania, using semi-structured interviews with 31 migrant farmers and seven key informants, revealed that migrant farmers contribute to urban food security through diverse crop cultivation and livestock keeping, enhancing food production and income generation. However, migrant farmers face major constraints including insecure land tenure, flooding, water scarcity, high input costs, and limited institutional support. City authorities institutionalize the marginalization of migrant farmers by treating urban agriculture as an informal and temporary activity, despite their critical contributions.

Sinem Kavak, Lorenza Arango, Doi Ra, Zeynep Ceren Eren Benlisoy, Carlo John Arceo, George T. Mudimu, Daren Shi-chi Leung, Adwoa Yeboah Gyapong, Mnqobi Ngubane · The Journal of Peasant Studies · Global

Migrant workers often remain marginal in food sovereignty discourse and practice despite their central role in the global food system. The emphasis on localization within food sovereignty often overlooks trends towards semi-proletarianization within small peasant and worker households, and a more inclusive food sovereignty agenda must address migrant workers' access to land.

Muhammad Hussain, Saima Shaikh, Zahir Ahmad, Ihsanullah, George Kontakiotis, Andreas Dittmann · Ecological Questions · Pakistan (Multan City)

This study analyzed urban expansion patterns and their impact on agricultural land in Multan City, Pakistan, using remotely sensed data from 1990 to 2020. The built-up area increased from 75 km² in 1990 to 299 km² in 2020, representing an annual increase of 9.5%. This growth converted approximately 31% (100 km²) of fertile agricultural land into built-up areas, with predictions of further increases of 54% by 2030 and 67% by 2040.

Thulisekari Prasanna, Guda Bhargavi, Murugesan Mohana Keerthi · Frontiers in Sustainable Food Systems · Global

This comprehensive review synthesizes literature on vertical and urban agriculture within sustainable food systems, identifying production models and technical advancements. Empirical evidence indicates these systems can improve water/land-use efficiency, yield stability, and reduce post-harvest losses. However, significant challenges persist, including high capital and energy prices, inadequate crop diversification, technical complexities, and regulatory constraints, impacting their economic viability.

Nthabeleng Tamako, Joyce Chitja · Agriculture & Food Security · South Africa

This study examined the impact of climate change on urban food gardens in Sobantu and Mpophomeni townships in Pietermaritzburg, KwaZulu-Natal, South Africa. Face-to-face interviews with 103 randomly selected participants revealed that climate change disproportionately affects resource-limited urban farmers, leading to erratic rainfall, pests, and natural disasters. Elevated temperatures, shifting weather patterns, and new pests and diseases significantly impact food gardens, affecting seed and crop selection and contributing to food insecurity.

Caroline Merheb, Joshua S. Caplan, Pralad Phuyal, Jordan Macknick, Nicholas C. Davatzes, Sujith Ravi · npj Urban Sustainability · Global

This study evaluated ground-based agrivoltaics in an urban context. It demonstrated that while early-season yields may decline due to light reduction in temperate climates, productivity rebounds during periods of extreme heat, extending harvest windows and enhancing crop resilience.

Adomas Gedvilas, Dovilė Krupickaitė · Journal of Architecture and Urbanism · Lithuania

This paper examines old community gardens in Grigiškės and Plungė, Lithuania, as examples of Everyday Urbanism, using literature, data, maps, and interviews. The study found that these gardens, established informally on vacant land during the socialist period, are not officially recognized and their future development may differ due to varying local government attitudes. This highlights the need for a more flexible approach to their preservation and integration into urban planning.

Chris Blythe · OSF Preprints (OSF Preprints) · Global

This systematic review aims to explore the barriers to urban agriculture at a global scale. Recent years have seen a dramatic increase in systematic reviews concerning urban agriculture's health benefits, motivations for participation, and sustainability elements. This study will focus on the challenges and obstacles in implementing urban agriculture.

Anelise Anapolski, Ana Passuello, Miguel Aloysio Sattler · International Journal of Sustainability in Higher Education · Brazil

This study investigated urban agriculture (UA) as regenerative infrastructure on a university campus in Brazil, assessing challenges and opportunities before project implementation and proposing design requirements for future projects. Data collected from 120 questionnaires and 9 interviews revealed key challenges including maintenance, stakeholder engagement, risk of discontinuity, and lack of institutional support. The academic setting offers opportunities through integration with teaching, research, and outreach, and the campus community positively associates UA with innovation.

Adan Iddrisu · DOAJ (DOAJ: Directory of Open Access Journals) · Ghana

This policy brief explored the causes of farmland loss and its effects on the livelihoods of smallholder farmers in the Northern Region of Ghana due to rapid urbanization. Using data from focus group discussions, findings revealed that loss of farmland reduces productivity, increases household food security vulnerability, and threatens the livelihoods of farmers.

Hao Yang, Zijin Wang, Yueming Hu, Zhengxi Tan, Runyan Zou, L. Wang, Xiaoyun Mao · International Journal of Agricultural Sustainability · China (Guangdong)

A study in Guangdong Province, China, coupled a Bayesian belief network with density peaks clustering to analyze agricultural land resources. The research identified significant synergies between food production function and other functions, but also a trade-off with food cleanliness. Consequently, Guangdong agricultural land was zoned into five functional zones.

Gabson Baguma, Gadson Bamanya, Allan Gonzaga, Hannington Twinomuhwezi, Barnabas Mubangizi, Eric Niringiyimana · Pollutants · Uganda

This review synthesized literature on the occurrence of cadmium, chromium, nickel, lead, and arsenic in foods consumed in Uganda. Contamination was concentrated in mining-influenced agricultural areas, wastewater-irrigated farms, municipal dumpsites, industrial corridors, and urban food markets, with vegetables, cereals, livestock products, fish, and street-vended foods exhibiting the greatest contamination burdens. Lead and cadmium most frequently exceeded WHO/FAO, Codex Alimentarius, and Ugandan food safety limits, and children consistently showed higher dietary exposure than adults.

Sneha Kumari Bharati, A. Pattanayak, Sidh Nath Prasad Yadav ‘Deen’ · Asian Journal of Environment & Ecology · Global

This study compared odonate diversity and population dynamics in rural (Manpur) and urban (Gaya city) agricultural landscapes of the Eastern Gangetic Plains from March 2022 to February 2024. The rural landscape supported 24 odonate species, while the urban landscape supported 17, showing only moderate similarity (SSI = 0.571) between the two assemblages. This indicates a lower diversity of odonates in urban agricultural areas compared to rural ones.

Abie Assres Fenta, Habtie Anmaw · Discover Sustainability · Ethiopia (Debre Markos)

This qualitative study explored the adaptive livelihood strategies of evicted peri-urban farmers around the metropolis of Debre Markos, Ethiopia. Findings confirmed that farmers tend to hand over their land with insufficient compensation and are compelled to adapt to new livelihoods after losing farmlands. Many displaced young farmers experienced bankruptcy in new businesses due to a lack of business skills, and aged displaced farmers faced challenges adapting to new ways of life. The government did not provide adequate attention to training evicted farmers in technical, financial, and business planning.

Gang Wang · Agricultural History · China (Shanghai)

This historical analysis of Shanghai's vegetable supply system examines the limitations of peri-urban agriculture. In the early 1950s, Shanghai relied on distant rural areas for vegetables, shifting to suburban production in 1958 after rural sources were cut off. Efforts to sustain this suburban-centric system faced challenges, and government attempts to phase out the planned economy in the 1980s had limited effect. By the early 1990s, the suburban-centric system was abandoned, leading to a return to nonlocal vegetable predominance.

Jonas Sohn, Juliane Dziumla, Atiqah Fairuz Salleh, George Xydis · Sustainability Nexus Forum · Global

This study evaluated vertical farming (VF) through the resource nexus (RN) lens, emphasizing the interdependencies among energy, water, land, and materials. While VF offers advantages such as space efficiency, water conservation, and climate resilience, it was found to entail high energy demands, material dependencies, and economic feasibility challenges. An overview of these synergies and constraints helps identify mitigation strategies like circular water systems and hybrid renewable energy solutions.

Agrian Rizki Kuswanto, Zaenal Sirajuddin, Ahda Mulyati · Technium Social Sciences Journal · Indonesia

This study analyzed the degradation of interest in grape cultivation in Boyaoge Village, Indonesia, from the perspective of architecture and urban agriculture. Using field observations, interviews with local farmers, and spatial analysis, the findings indicated that the main causes were the shift in land use from agriculture to settlements, a lack of infrastructure support such as efficient irrigation systems and market accessibility, and non-agricultural-friendly spatial designs including limited green open spaces and limited use of agricultural technology. These factors contribute to the decline in grape cultivation interest.

Katie J. Field, Yolima Carrillo, Stuart A. Campbell, Jurriaan Ton, Adam Frew · Plants People Planet · Global

This special issue presents an innovative framework for sustainable land use, leveraging synergies between plants, soils, and societies to address global environmental crises and food insecurity. It notes that human activities, including land clearing for agriculture, rapid urban sprawl, and heavy use of chemical inputs, have pushed biogeochemical cycles of carbon, nitrogen, and phosphorus beyond their safe operating limits. The collection of papers collectively emphasizes the need for a fundamental shift in managing plant, soil, microbes, and human systems as interdependent components.

Charlotte Gallagher, Daniel López-García, Parisi, Anton, Cuevas, Soledad · Zenodo (CERN European Organization for Nuclear Research) · Europe

An outcome report from strategic workshops in Valladolid, Flanders, and Wrocław, engaging 33 diverse local stakeholders, assessed key policy and governance challenges facing urban agriculture. The most urgent and actionable priority identified across all three regions is the lack of coordination and knowledge sharing, underscoring a critical need to build resilient urban agriculture coalitions. To address broader structural issues like land access, stakeholders emphasized bridging the urban-rural divide, overcoming political short-termism, and establishing a shared understanding of urban agriculture's multifunctionality.

Yang Hua, Yong Xu, Kan ZHOU, Jie FAN · 资源科学 · China

This study analyzed the spatiotemporal patterns of supply and demand for seven major agricultural products in the Beijing-Tianjin-Hebei (Jing-Jin-Ji) region from 2015 to 2022. It found that the region faces a dual risk of agricultural product supply-demand imbalance and spatial mismatch, with an overall surplus but local shortages. Specifically, Beijing and Tianjin generally lack self-sufficiency in agricultural products. The research proposes an integrated layout plan for high-quality agricultural bases to address these imbalances and ensure regional food security.

Elías Machado · Editora Científica Digital eBooks · Brazil (Guarapuava)

This study examines the relationship between climate change, urbanization, and urban and peri-urban agriculture in Guarapuava-PR, Brazil. It emphasizes how regional atmospheric variability intensifies existing socio-environmental vulnerabilities. Guarapuava's climate, characterized by high thermal amplitude, frequent frosts, and irregular rainfall, significantly conditions agricultural production systems, especially in urban and peri-urban areas, negatively affecting productive cycles.

Evangelista et al. · Agronomy for Sustainable Development · Europe

This 8-year case study tracked tomato cultivation in a rooftop greenhouse. Peak yield reached 49 g plant−1 day−1 in the 2023 cycle, but overall yield declined by 31.2% across the 8 years. Best water use efficiency reached 36.8 g/L under reduced irrigation. Solar transmittance dropped from 50.9% in 2015 to 46.4% in 2023 due to polycarbonate degradation, and life-cycle global warming impact rose from a minimum of 0.54 kg CO2eq to 0.94 kg CO2eq in 2023.