Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
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Critical findings
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Urban expansion and food security implications: A three-decade analysis of land use change in Kinondoni district, Dar es Salaam, Tanzania (1993-2023)
2026Adili 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.
Environmental trade-offsFood sovereignty & justiceUrban–rural linkageClimate changePolicyA scoping review of the impact of urbanization on food security in Sub-Saharan Africa
2026Alemseged Gerezgiher Hailu, daniel girmay, samuel ataklti · Discover Food · Sub-Saharan Africa
This scoping review analyzed 155 sources (2009–2024) on urbanization's impact on food security in Sub-Saharan Africa. Findings showed rapid urban expansion converted 30% of peri-urban agricultural land in some regions, increasing dependence on imported staples, and low-income households spend 60–80% of income on food. A policy gap was identified, with only 12% of countries having supportive policies and 19% of cities designating land for farming.
Environmental trade-offsFood sovereignty & justiceEconomicsPeri-urban agricultureClimate changeHealthHeat exposure and agricultural workers' health: A global systematic review with implications for Peri-urban and semi-urban Southeast Asia
2026Nu Quy Linh Tran, Cordia Chu, Hai Phung, Son Nghiem, Han Le, Tuyet-Hanh Tran, Dung Phung · Urban Climate · Global
This global systematic review analyzed 97 studies from 27 countries on heat exposure and agricultural workers' health. The majority of studies (54.6%) were from North America, with Africa, South America, and Asia significantly underrepresented. Common health outcomes included self-reported heat-related illnesses (27.8%) and kidney issues (20.6%), but cardiovascular health, mortality, and mental well-being remain significantly understudied. In Southeast Asia, urbanization increases heat risk for peri-urban agricultural workers, as these zones often lack infrastructure, healthcare, and regulatory protections, exacerbating exposure to extreme heat, particularly from the urban heat island effect.
Environmental trade-offsHealthClimate changePeri-urban agriculturePerceived sustainability impacts of converting to community‐supported agriculture
2026Lukas Egli, Jana V. Schmidt, Hanna‐Sofie Haf, Mirco Zech · Urban Agriculture & Regional Food Systems · Global
This exploratory quantitative survey assessed farmers' perceived sustainability impacts of converting to Community-Supported Agriculture (CSA). While most perceived impacts were positive, adverse impacts were anticipated regarding climate and water, such as increased water usage from vegetable production. Farmers in CSAs with medium to high member participation perceived significantly higher biodiversity impacts and more positive sustainability impacts for members.
Environmental trade-offsCSA & TeikeiClimate changeBiodiversityEconomicsClimate change impact on urban food gardens: implications for adaptation strategies and food and nutrition security in townships in Pietermaritzburg Kwazulu-Natal, South Africa
2026Nthabeleng 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.
Environmental trade-offsClimate changeFood sovereignty & justiceWelfareUrban–rural linkageNurturing Resilient Urban Animal Agriculture for Food Security in Sub-Saharan Africa: A Triad Approach to Social, Economic, and Environmental Sustainability
2026Never Assan, Justice Sibanda, Betty Mukuwapasi, Reason Rumbidzai Charachimwe, Edmore Masama · Journal of Frontiers in Multidisciplinary Research · Sub-Saharan Africa
Urban animal agriculture (UAA) in Sub-Saharan Africa is presented as a solution for food security but faces challenges including gender inequality, climate change, inadequate legislation, and environmental degradation. While UAA aims to enhance household food security and alleviate poverty, it also encounters environmental issues such as resource competition, water resource strain, improper manure management, greenhouse gas emissions, noise, and nuisance. Sustainable UAA requires semi-intensive silvopastoral and mixed crop and livestock systems to reduce environmental impact and enhance local food production.
Environmental trade-offsFood sovereignty & justiceWelfareClimate changePolicyReducing Sulfur Dioxide and Boosting Agricultural Productivity: Evidence From China's Sulfur Dioxide Trading Pilot
2026QianYing Chen, Pengyu Chen, Guangwei Liu · Food and Energy Security · China
This study, using China's 2007 sulfur dioxide emission trading as a starting point, reveals the relationship between Sulfur Dioxide Emissions Trading (SDE) and agricultural productivity. The analysis found that SDE can suppress agricultural productivity, and it has a greater negative impact on cotton-growing, non-rice-producing, and non-fruit-producing areas. Furthermore, SDE inhibits local urban agricultural productivity while promoting agricultural productivity in neighboring cities.
Environmental trade-offsClimate changeEconomicsMultifunctional zoning optimization of agricultural land use by coupling Bayesian belief network with density peaks clustering – a case study in Guangdong, China
2026Hao 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.
Environmental trade-offsPolicyEconomicsFood sovereignty & justiceUrban–rural linkageApplying recovered nutrients and pruning waste to enrich and regenerate agricultural soils in urban agriculture: Effects on emissions and yield of spinach and sweet potato
2026Guido Evangelista, Juan David Arosemena, Gaia Stringari, Joan Romanyà, Xavier Gabarrell, Francesco Orsini, Gara Villalba · Agriculture Ecosystems & Environment · Global
This study evaluated the application of 150 t ha-1 of ramial chipped wood (RCW) to degraded peri-urban agricultural soils, comparing its effects on yield, soil health, and greenhouse gas emissions for spinach and sweet potato. Spinach grown with RCW showed the lowest productivity (1.16 – 0.32 kg m-2) among treatments, while sweet potato achieved the highest yield (1.72 – 1.99 kg m-2). High RCW doses initially led to higher CO2 emissions but significantly reduced N2O emissions for spinach (from 0.36 kg ha-1 to 0.07 kg ha-1) and enhanced soil organic carbon and nitrogen stocks for sweet potato, indicating agronomic and environmental trade-offs.
Environmental trade-offsOrganic cycleCompostClimate changePeri-urban agricultureRural–Urban Differences in Odonata Diversity and Population Dynamics across Agricultural Landscapes of the Eastern Gangetic Plains
2026Sneha 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.
Environmental trade-offsBiodiversityUrban–rural linkageSynergising outdoor, indoor, and greenhouse urban agriculture to strengthen urban resilience in an era of polycrisis
2026James Vandenberg, Kerstin Krellenberg · Sustainable Cities and Society · Global
This study investigated how differentiated configurations of outdoor, indoor, and greenhouse urban agriculture (UA) impact Urban Resilience Capacities (URCs). It found that a strategic, place-based, combinatorial approach to integrating UA typologies can produce mutually reinforcing outcomes, strengthening various URCs simultaneously. However, a strong risk of trade-offs exists when UA systems are not aligned, and a critical research gap remains as empirical case studies are concentrated in Europe and North America, overlooking experiences in the Global South.
Environmental trade-offsClimate changeCommunityPolicyToward climate-smart urban agriculture in Palembang: A systematic review on strategies, trade-offs, and synergies
2026Strayker Ali Muda, Heripan Heripan, Fitra Gustiar · Springer Link (Chiba Institute of Technology) · Indonesia (Palembang)
This systematic review examined strategies, trade-offs, and synergies of climate-smart urban agriculture relevant to Palembang City, Indonesia. A total of 400 records were identified from Google Scholar and Scopus, with 352 unique records screened. While urban agriculture showed five key contributions, including strengthening food security, several critical trade-offs were identified, such as land scarcity, energy and water requirements, soil contamination risks, technological costs, and policy fragmentation. The review emphasizes that urban agriculture should be part of a broader transformation of urban food systems, not a stand-alone solution.
Environmental trade-offsClimate changeFood sovereignty & justiceCommunityPolicyEconomicsHigh respiration rates induce net CO2 emissions in an urban allotment garden in Finland
2025Piaopiao Ke, Beñat Olascoaga, Pasi Kolari, Outi Tahvonen, Sami Haapanala, Tom Kokkonen, Leena Järvi, Markku Kulmala, Anna Lintunen · Urban forestry & urban greening · Finland
A year-round eddy covariance and soil chamber measurement in an urban allotment garden in southern Finland showed it functioned as a net CO₂ source (0.69 kg m⁻² yr⁻¹) despite 77% vegetation cover. High respiratory emissions (4.7 kg m⁻² yr⁻¹) exceeded photosynthetic uptake (4.0 kg m⁻² yr⁻¹), likely due to elevated soil organic carbon (13.4 ± 8.7%) and high soil C:N ratio from management amendments. These findings challenge assumptions about urban gardens as inherent carbon sinks and suggest carbon-smart management practices are needed.
Environmental trade-offsClimate changeOrganic cycleCommunityFloristic Diversity and Characterization of Peri-Urban Agriculture in Some Drains of the City of Douala (Cameroon)
2025Olivier Parfait Bissemb, Rosette Christelle Ndjib, Patrice Brice Mvogo Ottou, Jacques Bruno Ngotta Biyon, Zenabou Ndiang, Georges Maxime Lamy Lamy, Eric Ngansop Tchatchouang, Ivant Stevy Nganmo, Jean Lagarde Betti, Richard Jules Priso · Journal of Environmental Protection · Cameroon (Douala)
This study assessed floristic diversity and agricultural practices around five stormwater drains in Douala, Cameroon, identifying 67 species from 24 families. Floristic diversity, measured by the Shannon-Weaver index (H'= 0.99) and low evenness (E = 0.23), indicated an unbalanced plant community dominated by a few cultivated and ruderal species. The analysis also revealed significant homogenization between drains, suggesting common agricultural practices and environmental pressures in these polluted environments.
Environmental trade-offsBiodiversityPeri-urban agricultureFood sovereignty & justiceClimate changeEvaluation and Changes in the Comprehensive Ecological Effects of Agriculture in Urbanizing Areas: A Case Study of the Xi'an Metropolitan Zone, China
2025Zhongxue Zhou, Fangze Zhao, Bingjie Song · Ecological Indicators · China
This study proposed the concept of agricultural comprehensive ecological effects (ACEE), developed an evaluation framework, and applied it to the Xi'an metropolitan zone, China. A key finding was the observed decrease in the comprehensive ecological effects of agriculture when transitioning from grain planting to urban agriculture due to unsuitable agricultural practices in urbanizing areas. This decline occurs because modern agricultural practices in urbanizing areas are ecologically detrimental compared with natural ecosystems.
Environmental trade-offsClimate changeBiodiversityUrban–rural linkagePolicyUrban farming and the nexus of economic growth and environmental sustainability in coastal cities, Indonesia
2025Tri Astuti, Hasddin Hasddin, Asrul Asrul, J Jasman, Muh. Yani Balaka, Haydir Haydir, Alfian Ishak, Muhamad Idham Handa, Villa Evadelvia Ginal Sambari, Eva Safitri Maladeni · European Journal of Sustainable Development Research · Indonesia (Kendari City)
This study quantitatively investigated the contribution of urban farming to economic growth and environmental sustainability in Kendari City, Indonesia. Urban farming is the third-highest contributor to the city's gross domestic regional product, accounting for 10.66% of total economic output, yet the sector's overall growth fluctuates, and its direct economic impact is underreported. In terms of environmental performance, Kendari's energy consumption and CO₂ emissions exceeded Asian Green City Index thresholds, categorizing the city as "below average" in sustainability.
Environmental trade-offsEconomicsClimate changePolicyPotential for urban agriculture: Expert insights on sustainable development goals and future challenges
2025Margarethe Karpe, Jeremías Lachman, Lili Wang, L.F.M. Marcelis, E. Heuvelink · Sustainable Production and Consumption · Global
A Delphi survey with 108 experts explored urban agriculture's potential contributions to Sustainable Development Goals (SDGs) under a scenario of 30% urban food self-sufficiency. Experts identified SDG 7.2 (renewable energies) as a key challenge due to high energy use, and agreed that none of the evaluated SDG targets for urban agriculture will be met by 2030. They also noted a lack of regulations and public policies for innovative agricultural systems.
Environmental trade-offsClimate changeFood sovereignty & justiceEconomicsPolicySustainability of Peri-Urban Rice Farming Practices in Ilorin, Nigeria
2025A. K. Ahmed, Rasheed Abiodun KURANGA, Oluwadara Latifat ISOLA-MUYIDEEN · International Journal of Research and Innovation in Social Science · Nigeria (Ilorin)
This study assessed the sustainability of environmental management practices among peri-urban rice farmers in Ilorin, Nigeria, using a sustainability index. It found that many practices were less sustainable, with 69.51% of farmers relying on chemical sprays and 69.85% using chemical fertilizers. The overall Environmental Management Practices Sustainability Index (EMPSI) for all farmers was 0.492, placing them in the moderately sustainable category.
Environmental trade-offsPeri-urban agricultureFood sovereignty & justiceClimate changeEconomicsImplications for malaria transmission: a cross-sectional study on the bionomics and susceptibility of local malaria vectors in urban and periurban settings of Ndola district
2025Westone Hamwata, Mwendalubi Hazyondo, Victor Daka, Mbanga Muleba, Nzooma M. Shimaponda-Mataa · BMJ Open · Zambia
A cross-sectional study in urban and periurban areas of Ndola district, Zambia, assessed malaria vector behavior and insecticide resistance. Urban agriculture practices created highly productive mosquito breeding sites like irrigation trenches and garden ponds, where Anopheles funestus s.s and Anopheles gambiae s.s coexisted. Anopheles gambiae s.s showed high resistance to pyrethroids, carbamates, and organochlorines, indicating that urban agricultural practices increase the risk of sustaining malaria transmission year-round.
Environmental trade-offsHealthPeri-urban agricultureQuantifying US metropolitan level environmental burdens & benefits from greater localization of vegetable farming
2025Peter Nixon, Anu Ramaswami · Environmental Research Letters · United States
This paper quantifies environmental benefits and disbenefits from various vegetable farming localization scenarios across 378 US metropolitan areas. While scenarios found few significant land constraints and revealed net environmental benefits to groundwater overdraft and fertilizer-related PM2.5 emissions in 11%–55% of metros, the model also revealed where relocalization would exacerbate existing environmental vulnerabilities. This indicates potential environmental tradeoffs depending on the location.
Environmental trade-offsEconomicsClimate changeUrban–rural linkagePeri-urban agricultureConclusion: Cultivating Middle Ground
2025· The MIT Press eBooks · Global
This book examines community farms in Latin America, Australia, and China, highlighting tensions between local identities and global transformation. It finds that while industrial expansion in export agribusiness generates macroeconomic benefits, it incurs micro-level costs such as the replacement of peri-urban farms by plantations, loss of biodiversity, and groundwater contamination from pesticides and fertilizers. The study suggests that food system intermediaries are crucial in connecting rural migrants with urban farms and resources.
Environmental trade-offsCommunityPeri-urban agricultureFood sovereignty & justiceBiodiversityClimate changeTemporal and Spatial Analysis of the Environmental State of the Valencia Plain Aquifer Area Using the Weighted Environmental Index (WEI)
2025Javier Rodrigo-Ilarri, Claudia P. Romero-Hernández, Sergio Salazar-Galán, María-Elena Rodrigo-Clavero · Sustainability · Spain (Valencia)
This article analyzes the impact of urban sprawl on the Valencia Plain aquifer system from 1990 to 2018 using the Weighted Environmental Index (WEI). Results show urban surfaces expanded by 70% and rainfed agricultural areas declined by over 59%, leading to a 9.2% reduction in environmental value (WEI decreased from 44.80 to 40.68). These changes threaten ecosystem sustainability and reduce the capacity to deliver ecosystem services.
Environmental trade-offsPeri-urban agriculturePolicyBiodiversityClimate changeUrban agriculture supports China’s vegetable supply without raising greenhouse gas emissions
2025Yuanchao Hu, Prajal Pradhan, Haoran Zhang, Zhen Wang, Qianyuan Huang, Qiqi Jia, Xihong Lian, Chao Xu, Rui Yang, Yuxi Tian, Zhibang Xu, Limin Jiao, Jürgen P. Kropp · Resources Environment and Sustainability · China
This study constructed a new dataset of urban productive spaces for 124 large Chinese cities to assess the potential of urban agriculture. It found that approximately 30% of urban vegetable demand could be met by utilizing spaces such as rooftops and open areas. However, urban agriculture showed little potential for greenhouse gas emission mitigation, with an average intensity (0.30 kgCO2e/kg) similar to traditional agriculture (0.31 kgCO2e/kg).
Environmental trade-offsClimate changeUrban–rural linkageEconomicsDigital agricultureTrading urban green spaces for brown space development in African cities: evidence from the Greater Accra Metropolitan Area, Ghana
2025Alex Barimah Owusu, Collins Adjei Mensah, Clement Kwang, Gerald Albert Baeribameng Yiran, Ronald Reagan Gyimah, Dominic Edem Hotor, Princella Ofori Darko · International Planning Studies · Ghana
This paper analyzed the replacement of green spaces with brown spaces in Accra, Ghana, from 1991 to 2021 using Landsat satellite images. Brown areas increased from 24.5% in 1991 to 81% in 2021, while green areas decreased from 75.5% to 19% during the same period. The study found a significant reduction in green spaces due to urbanization.
Environmental trade-offsPolicyUrban–rural linkageBiodiversityPenerapan Prinsip Permakultur Desain Melalui Elemen Arsitektural pada Bangunan Vertical Harvest Farms, USA
2025Aprilia Shyntia Dewi, Muchlisiniyati Safeyah · Sinektika Jurnal Arsitektur · United States
This qualitative descriptive study analyzed the application of permaculture design principles through architectural elements at Vertical Harvest Farms, USA, using secondary data. The research found that Vertical Harvest Farms largely incorporates permaculture design principles through architectural elements, such as greenhouse-based materials adapted to local climate and optimal spatial arrangement. However, regarding mass typology, the farm was found to be less compliant with the permaculture design principle of "Design from Pattern to Detail."
Environmental trade-offsClimate changeDIYDigital agricultureUrban–rural linkage