Research & reports

Tanja Pless‐Mulloli, Karen L. Foster, J Bush · Epidemiology · United Kingdom (Newcastle upon Tyne)

Investigations in Newcastle upon Tyne, UK, analyzed the extent and consequences of disposing 2000 tons of incinerator ash on over forty allotments. Soil, egg, and vegetable samples (75 soil, 21 egg, 65 vegetable) revealed contamination of footpaths with dioxin/furan (max 9000 ng/kg I-TEQ) and high levels of copper, lead, and zinc. Mean dioxin/furan levels in soil were 38 ng/kg I-TEQ and in eggs were 16.4 ng/kg I-TEQ, indicating significant contamination and potential exposure pathways for allotment gardeners and children.

Liao Minghui · Nongye xiandaihua yanjiu · China (ChangshaZhuzhouXiangtan)

This paper discusses the essentiality of urban agriculture development in urban compact districts, highlighting its multiple efficacies including economic, social, and ecological benefits. Based on an analysis of typical examples in ChangshaZhuzhouXiangtan, the paper describes the current status and identifies many problems in urban agriculture. Finally, numerous countermeasures are proposed for these issues.

Han-Cheol Hwang, Soo‐Myung Choi · Journal of Korean Society of Rural Planning · South Korea (Seoul)

A study in Seoul examined farmers' views on the Green Belt policy. Leaseholders did not want changes, while landowning farmers desired revision or dissolution, with both groups citing development delays and difficulty changing land use. The Green Belt policy was found to cause development delays and land use change difficulties, indicating negative impacts on farmers.

N. Bertrand, Nicole Rousier · HAL (Le Centre pour la Communication Scientifique Directe) · France (Grenoble)

In the Grenoble urban region, agriculture holds relatively minor economic importance despite the region's strong technological development. However, the region's 2000 master plan assigned an essential role to farming. Peri-urban agriculture is a key issue in planning policies, engaging local officials, planners, and farming community representatives, but its economic weight remains low.

G. B. Luilo, Othman C. Othman · Journal de Physique IV (Proceedings) · Tanzania (Dar es Salaam)

This study measured heavy metal levels (cadmium, manganese, lead, and zinc) in Cynodon grasses near roads in Dar es Salaam City, Tanzania. Mean levels of lead and zinc varied exponentially with distance from the road up to 15m and correlated with average daily traffic, suggesting vehicular sources. For public health reasons, it is recommended that pasture grasses in road vicinities not be used for foraging dairy cattle and goats.

Bernard Keraita, Pay Drechsel, Philip Amoah · Environment and Urbanization · Ghana (Kumasi)

This study in Kumasi, Ghana, investigated the influence of urban wastewater on stream water quality and peri-urban agriculture through interviews and water quality assessments. It found that population increase and underinvestment in sanitation facilities led to large volumes of untreated wastewater entering streams. High levels of faecal coliform were recorded in the city's streams, downstream areas, and on vegetables sold in Kumasi’s markets due to contaminated wastewater.

Nathalie Bertrand, Nicole Rousier · Revue de géographie alpine · France (Grenoble)

This study analyzed the economic role of agriculture in the Grenoble urban region, France. From an economic perspective, agriculture was considered an activity of relatively minor importance in this region, known for its strong technological development. However, in the regional master plan approved in 2000, farming occupies an essential position. The study aimed to understand the role of peri-urban agriculture in the preparation of the urban region's development plan by specifying its assigned functions and analyzing how agriculture has been considered in regional plans.

You Shao · · China (Chongqing)

This paper examines the development of urban agricultural industrialization in the metropolitan periphery, using Chongqing, China, as an example. It identifies the position, role, and favorable conditions of urban agriculture, which embodies economic, social, and ecological functions. The study also highlights existing problems in Chongqing's agricultural industrialization and proposes countermeasures.

Charles Rowley · eScholarship (California Digital Library) · United States (California)

This paper compared the successes and failures of two urban creek restoration programs in California: Temescal Creek (initiated nearly 30 years ago) and White Oak Creek (completed about four years ago). Based on the author's success criteria, the more recent White Oak Creek program achieved significant success, while the earlier Temescal Creek restoration did not reach generally acceptable success levels. This difference is attributed to changes in management and scientific practice over 30 years, including substantial changes in the legal basis for restoration, improved monitoring requirements, and the critical role of properly engineered low flow distribution structures.

Yansui Liu · · China

China's agricultural structure adjustment from 1997 to 2000 focused on comprehensive adjustments of quality, varieties, industrial, and regional structures. While distinctive agriculture increased by 3.1% during this period, the effects of the adjustment varied significantly due to regional comparative advantages. Notably, foodstuff crop seeding areas dropped by 3.97% and foodstuff yield by 6.47% nationally, with visible drops in 22 provinces, leading to a warning that loosening vigilance on food security necessarily leads to a significant drop in China's food security.

Joe Howe · Journal of Environmental Policy & Planning · United Kingdom

This article explores the neglect of research concerning food grown within urban areas and its land-use policy implications. It details findings from a UK study on land-use policy and urban agriculture, investigating land-use officials' attitudes and knowledge of urban food production and the regulatory framework used. The article concludes that despite extensive urban agriculture practice, its urban land-use policy implications require more attention from both land-use officials and researchers than previously given.

Jean-Noël Consalès · Rives méditerranéennes/Rives méditerranéennes · Europe

This study examines allotment gardens in Marseille, Genoa, and Barcelona and finds that, although urban agriculture is potentially at stake in these cities, allotments struggle to establish themselves within complex urban contexts. Their actual function appears limited: their social role is often overestimated, while their environmental and landscape significance remains largely neglected.

Jeroen H. J. Ensink, Wim van der Hoek, Yutaka Matsuno, Sarfraz Munir, Muhammad Rizwan Aslam · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · Pakistan

The use of untreated wastewater for irrigation is widespread in Pakistan's peri-urban agriculture, driven by water scarcity and lack of treatment funds. This practice has led to an uncontrolled expansion of wastewater use. The paper emphasizes the need to document this practice to find improvement methods within the financial constraints of low-income countries.

Karen Schmelzkopf · Urban Geography · United States (New York City)

This study examined the conflict over community gardens in New York City, arguing that it was a struggle concerning the right to space. The city, operating from an entrepreneurial governance perspective, claimed that the gardens represented a loss of exchange value and potential housing. The city used market economy rhetoric to dismiss incommensurable use values, thereby restricting rights to the city within a demonstration of power and "reason."

Sigrid Stagl, Sabine O’Hara · International Journal of Agricultural Resources Governance and Ecology · United States (New York City)

This study examined whether Community Supported Agriculture (CSA) groups are a broadly accepted or limited alternative food system, based on a household survey in two distinct socio-economic neighborhoods in upstate New York. The survey found that approximately 25% of respondents expressed interest in becoming CSA members, with similar interest levels in both wealthier and low-income areas. However, several factors preventing food demand through CSAs were identified, indicating that these barriers would need to be addressed for expansion.

Maurizio Tiepolo · PORTO Publications Open Repository TOrino (Politecnico di Torino) · Niger

This paper investigates whether urbanization in Niamey, Niger, generates or aggravates urban food insecurity by examining agro-pastoral production, food demand, and buying power. It found that Niamey's high rate of urban growth has increased food insecurity for its inhabitants. This insecurity is attributed to low productivity of peri-urban agriculture, insufficient food influxes, rising prices, extreme poverty, and a nutrient-poor diet, with current measures failing to address root causes like land tenure uncertainty.

C. Clare Hinrichs, Kathy S. Kremer · Journal of Poverty · United States

This 1997 case study examined a Midwest community supported agriculture (CSA) project that aimed to increase low-income participation through financial subsidies, using a telephone survey of 41 member-households. The study found that while subsidized households had lower incomes, the overall CSA sample was more advantaged in income, occupation, and education compared to local populations. The project inadvertently served the "advantaged" poor, indicating that social inclusion efforts in local food systems may not effectively reach the most vulnerable.

Cindy Rosenthal · TDR/The Drama Review · United States (New York City)

In New York City, a group of NYU students and local community activists protested and performed against landlords and the city bulldozing community gardens. Their performance piece documented the transformation of garbage-strewn lots into lush, vital community havens and cried out against their destruction. This highlights a conflict over urban garden governance.

L. A. Akinbile · African Journal of Livestock Extension · Nigeria (Ibadan)

A study in Ibadan, Nigeria, reviewed grasscutter rearing as an urban agricultural practice. It found that farmers used intensive rearing systems and sold animals for N1,000-N2,100, generating up to N5,000 annually per pair. However, the provision of credit was identified as a major limiting factor for this practice.

Charles W. Howe · Environment and Development Economics · Global

This study noted that in inappropriate legal and administrative settings, groundwater becomes an open-access resource, leading to excessive externalities. Competition between urban and agricultural sectors for limited groundwater can lead to crises if appropriate policy instruments are not used to mediate it. For non-renewable groundwater stocks, without economic and demographic development planned according to long-term criteria, there is a risk of overly rapid exploitation, unsustainable population levels, and inappropriate infrastructure investment.

Manon Boulianne · Anthropologica · Mexico

A study on community organizations and urban agriculture in Mexico City and Cuernavaca suggests that the very meaning of participation becomes an issue for community organizations engaged in popular entrepreneurship development programs. It illustrates how the structuring effects of market production activities lead to a renegotiation of the meaning attributed to participation among the individuals and groups concerned.

Nigel Poole, DS Bhupal, Fiona Marshall, Dolf te Lintelo · · India

New knowledge is presented on the impacts of urban and peri-urban (UPU) environmental pollution on food safety attributes of vegetable marketing systems in India. Air pollution reduces crop yield and nutritional quality, and is a major source of particulate contaminants that accumulate at toxic levels in edible crops. The study explores the balance between public and private quality assurance initiatives and identifies wholesale markets as a potential entry point for quality assurance.

L.M. van den Berg · WIT transactions on ecology and the environment · Africa, Asia

Urban agriculture, despite severe competition for space, plays roles such as fresh food supply, leisure, supplementary income for the urban poor, and green space management. Case studies in Africa and Southeast Asia demonstrate the difficulty of maintaining these roles due to public health and environmental degradation concerns. Urban agricultural producers may rely on polluted streams for irrigation, cause soil erosion through inappropriate farming techniques, or poison surrounding residents with pesticides. The paper suggests that urban agriculture could be more beneficial to the urban system if treated by town planners as a normal urban function requiring both regulation and protection.

Chen You · Forestry Science and Technology · China (Kunming)

This paper investigated the harm caused by important pests and endangered hosts on garden plants in Kunming communities, China. It identified that the low level of pest and disease control is due to an unsound forecast system, an unreasonable management system, and a shortage of knowledge among working personnel. Corresponding countermeasures proposed include establishing a sound forecast system, changing the current management system, and improving the knowledge of working personnel.

Ausaf-ur Rahman, Mohammad Ait Kadi, Johan Rockström · Water Science & Technology · Global

A synthesis paper from a 2002 workshop reports that competing demand for water between agriculture and urban users is generating severe stress on water resources, with virtual water trade (importing food instead of pursuing self-sufficiency, to conserve real water resources) and water reuse (irrigation with treated urban wastewater) emerging as the two dominant proposed responses. It states that virtual water trade carries serious political and economic risks, with one proposed remedy being an international virtual water trading council.