Research & reports

Jaap Evers · · Vietnam (Hanoi)

This paper discusses the transfer of international commitments on green sustainable growth to local levels, focusing on integrated urban wastewater management in Hanoi, Vietnam. It highlights the substantial potential of urban and peri-urban agriculture to reuse urban wastewater for nutrient recovery and to serve as environmental service providers within urban sanitation systems. However, it notes that many local policymakers are unaware of the significance and opportunities of this practice.

Marshall A. Baker · ˜The œAgricultural education magazine · United States (New Mexico)

This article describes two agricultural education programs in New Mexico, USA: one established in 1935 in a rural community connected to the dairy industry and the Ogallala Aquifer, and another established in 2009 in an urban area focused on sustainability and environmental issues. Both programs are successful in advancing agricultural education by connecting to local community issues. The article suggests that a program's connection to its local community and its concerns is more important than the size of the city.

Jan Ray, Koh Ming Wei, Diane M. Barrett · · United States (Hawaiʻi Island)

This study examined the effect of a week-long teacher training workshop, part of a year-long School Learning Gardens Professional Development Program, on 29 classroom and school learning garden teachers in Hawaiʻi. Teachers' attitudes toward sustainability education were measured before and after the workshop. Findings showed a statistically significant increase in teachers' overall attitudes toward sustainability education, including aspects related to productivity and comfort.

Juan Miguel Moreno Alvarez · Dialnet (Universidad de la Rioja) · Cuba (Ciudad de La Habana)

This doctoral thesis aimed to establish a system of urban soil quality indicators for Havana, Cuba, under different land-use scenarios (agricultural, parks/gardens, wooded areas, idle/underutilized spaces). Researchers selected 35 urban soils in Havana, described their morphological profiles, and determined physical, chemical, and biological properties. Eight variables were selected as soil quality indicators using principal component analysis, and a soil quality index, including one for heavy metals, was defined and evaluated for different uses. The studied soils, heavily affected by human activity, were classified as Urbic or Garbic Technosols and showed high heterogeneity in properties.

Shogo Mlozi · International NGO Journal · Tanzania

This paper assesses the knowledge of livestock keepers in Dar es Salaam, Tanzania, regarding the climate change effects of their activities. Over two-thirds of respondents did not believe solid waste, liquid waste, and pollution from livestock would affect future climate risks. However, they did perceive chemical pollution and land degradation from urban and peri-urban agriculture (UPA) livestock keeping as having climate change effects.

Yukihiro Yamaguchi · ScholarSpace (University of Hawaii at Manoa) · United States

This research aimed to enhance Waikīkī's image with sustainable planning and design, focusing on visitors' perceptions. While visitors' images of Waikīkī were primarily positive, the region faces environmental problems including inadequate recycling, transportation, and agriculture/aquaculture issues. The project proposes a new sustainable solution incorporating urban agriculture with an international event, Expo Hawai‘i 2020, to address these environmental challenges.

Marc van lersel · · Global

Agriculture faces the 21st-century challenge of feeding a growing, urbanizing population while minimizing negative environmental impact. Urban farming has been presented as a potential solution to perceived problems with conventional agricultural production, but its effectiveness as a comprehensive solution is questioned.

Daniele La Rosa, Francesco Martinico, Riccardo Privitera · TERRITORIO · Italy

This study discusses how non-urbanized areas in metropolitan contexts can be reconsidered for new land uses, combining peripheral urban agricultural production with environmental protection for climate change adaptation and ecosystem service production. Through a review of urban planning instruments in Mascalucia, a new land-use scenario for non-urbanized areas was proposed using a land suitability model that combined land cover and fragmentation analysis.

Dominique Rossi Breetzke, Christina Breed · Suid-Afrikaanse tydskrif vir kunsgeskiedenis · South Africa (Pretoria)

This paper explores using abandoned urban land for allotment community gardening in Sunnyside, Pretoria, South Africa, through a case study along the Walker Spruit. It tests the hypothesis of increasing food security and social capital through urban ecology design. Findings suggest that allotment culture and permaculture can reconnect people with urban nature, proposing a design concept to unite neighborhoods and provide social and biophysical services sustainably.

Jill L. Edmondson, Zoe G. Davies, Sarah A. McCormack, Kevin J. Gaston, Jonathan R. Leake · The Science of The Total Environment · Europe

A study of Leicester, a mid-sized city in the United Kingdom (73 km², 56% greenspace), analyzing how land-cover type (herbaceous, shrub or tree cover) affects soil organic carbon (SOC) stocks. Topsoil SOC was measured in domestic gardens and non-domestic greenspaces and compared with surrounding extra-urban agricultural land, then mapped citywide. Average SOC storage across the city's greenspace was 9.9 kg/m² to 21 cm depth; SOC under trees and shrubs in domestic gardens exceeded all other land-cover types, with median total storage of 13.5 kg/m² to 21 cm depth — more than 3 kg/m² higher than any other land-cover class in domestic or non-domestic greenspace, and 5 kg/m² higher than arable land. Land-cover did not significantly affect SOC in non-domestic greenspace overall, though values under trees were higher than under pasture and arable land, while shrub and herbaceous cover were higher only than arable land. The study concludes that greenspace management affects SOC stocks, that trees only marginally increase stocks in non-domestic greenspaces but may enhance them in domestic gardens, and that greenspace topsoils hold substantial SOC stores requiring protection from further expansion of artificial surfaces such as patios and driveways.

Qin Zhon · Shengtai kexue · China

This study applied SWOT analysis to examine the necessity, strengths, weaknesses, opportunities, and threats of low-carbon agricultural development in Guangzhou, China. Based on the continuous optimization of urban agricultural structure, strengthened industrialized agricultural operation, accelerated agricultural scientific and technological innovation, strong agricultural infrastructure, and achievements in technology-dissemination systems, it proposes developing modern low-carbon urban agriculture as the strategic direction, to be pursued by improving technological innovation capability, promoting the demonstration and industrialization of new agricultural technologies, and continuously improving socialized service systems.

Rebecca Bramall · Palgrave Macmillan UK eBooks · United Kingdom

An essay (United Kingdom) centered on a 2007 allotment project - a "victory garden" set up in St James's Park, London, by the Imperial War Museum London with the Royal Parks - that traces connections between the Second World War "Dig for Victory" campaign and contemporary discourses of sustainability and austerity. Focusing on urban agricultural projects, it considers how austerity discourse might shape British consumers' understanding of agricultural systems and the formation of consuming subjects.

QI Airon · · China

Using entropy value analysis, obstacle degree analysis, and GIS spatial analysis, this study built an urban agro-ecological security evaluation system for Xi'an, China, and found the security index rose from 0.44 in 2002 to 0.68 in 2011. Urbanization had a large negative influence on the sustainability and system stability of urban agricultural resources but a positive influence on output growth and development assurance, while the average obstacle degree of the key limiting factors declined from 12.47% in 2003 to 7.05% in 2006 and 4.97% in 2011; the security index also varied spatially across districts, lowest (≤0.15) in Lianhu, Beilin, and Xincheng and highest (>0.35) in Chang'an and Yanliang, reflecting differences in agricultural production conditions, transport access, and linkage to the urban economy.

Xuejun Chen · Ziran zaihai xuebao · Global

Introducing disaster-chain theory for mine ecological environments, this paper classifies the secondary ecological-environment destruction chains originating from ground collapse — affecting land, climate, water and artificial ecological environments — into five types, and further divides their interaction mechanisms into seven kinds across four classes. At the Siding lead-zinc mine, 280 collapse pits were brought under control based on ecological restoration and reorganized into landscape ecological function areas comprising urban agriculture and economic forest zones, restoring farmland and 8.47 hectares of forest land. The results indicate the proposed disaster-chain analysis is feasible and could offer a new approach for controlling ground collapse in mining areas.

Marc Christiansen, Natalie Marie Marquardt, Katie Picchione, Thomas Sullivan · Digital WPI · United States

In Worcester, Massachusetts, an urban farmers' group called "The Shop" built a greenhouse for year-round produce, but it became too cold to sustain plant growth during winter. Drawing on the group's composting experience, a project examined using biogas -- methane from anaerobic digestion of organic waste -- to heat the greenhouse, calculating the energy needed to heat the space and the expected energy yield from different available substrates using data from case studies and other sources. The results verified biogas as a viable way to heat the greenhouse at The Shop.

City of Chicago, Department of Planning and Development · City of Chicago, Department of Planning and Development · United States

The Chicago Department of Planning and Development publishes a dataset and map of the location, satellite imagery, and square footage of green roofs citywide, derived from high-resolution multispectral imagery acquired in September 2013. The analysis identified 509 vegetated roofs within city limits totaling 5,564,412 square feet of coverage.

Susan B. Johnson · International Journal of Inclusive Education · United Kingdom

This paper argues that a reconceptualized approach to school gardening in the UK could promote inclusive education for sustainable development. It examines the potential for children aged 5-14 to develop ecological knowledge, action competence, and environmental engagement skills through gardening. The paper suggests a curriculum framework and provides a bean crop exemplar, but it does not present empirical findings or results from an implemented program.

Eva Foos, Thomas Aenis, Julia Jahnke · GERICS Climate Service Center Germany (University of Oldenburg) · Germany

This paper discusses initial experiences from a German R&D network (INKA BB) developing capacity building programs for climate change adaptation in agriculture and horticulture. It uses two urban agriculture/gardening examples as case studies to discuss the strengths and weaknesses of development processes. The authors advocate for "learning chains" that enable lifelong learning and an action-oriented, participatory approach to foster mutual learning among partners from research and education.

Chen Yu, Wong Nyuk Hien · Advances in Building Energy Research · Global

This chapter reviews worldwide research on urban greenery, discussing three main types: public green areas, rooftop gardens, and vertical landscaping. It examines these from both a systematic and thermal benefit perspective. The chapter provides general guidelines for strategic landscaping in cities to mitigate environmental issues.

Sylvestre Dasylva · Journal of environmental science & engineering · Senegal (Dakar)

This paper discusses rainwater management in the "niayes" zone of Dakar, Senegal. This area is characterized by agricultural depressions with typically high groundwater levels, but a recent drop has turned some into runoff-gathering sites, used for urban agriculture among other services. However, two acute problems are observed: hydrological drying due to insufficient rainwater refill and urbanization of these bottom-lands. Furthermore, decreasing pluviometry exacerbates nuisances like floods and malaria.

· · Global

This paper discusses the unsustainable uni-directional flow of food and nutrients from rural areas to cities, which are then discharged as waste, causing pollution and nutrient depletion. Citing historical examples from Rome and London, and contemporary observations of sewage plumes in coastal cities worldwide, it highlights how valuable nutrients are lost to the sea. The paper argues that creating sustainable cities requires re-evaluating nutrient flows between urban and rural areas and understanding urban metabolism.

Shengzhong Chen · Guangdong nongye kexue · China (Guangzhou)

This study analyzed the development conditions, process, characteristics, and barriers of urban agriculture in Guangzhou City. It showed that while urban agriculture in Guangzhou has formed functions such as production, technology demonstration, ecological barriers, and leisure services, it faces internal and external development barriers including a decline in agriculture's status, expansion of urban land, labor shortages, and environmental pollution. These barriers hinder the healthy and sustainable development of urban agriculture.

강현정, 김세용 · 한국주거학회 학술발표대회 논문집 · South Korea

Modern cities prioritize development, leading to environmental deterioration. The biotope area ratio may not adequately reflect spatial utilization and plant growth conditions in multi-unit dwellings. While urban agriculture holds potential for environmental reform, a systematic framework and clear guidelines for its practical application are currently lacking. This study aims to derive crop indices for revitalizing urban agriculture and propose development directions for the biotope area ratio.

Katrin Bohn, André Viljoen · · Germany (Berlin), United Kingdom (London)

This chapter reviews the evolving Continuous Productive Urban Landscape (CPUL) City concept in the context of Berlin and London, exploring ways to integrate sustainable food systems into the urban fabric. The CPUL City Toolkit provides an overview of key steps for planning and implementing urban agriculture as part of coherent productive urban landscape strategies. The toolkit introduces four methods of action: Action U+D, Action VIS, Action IUC, and Action R.

Mary Margaret Fischer · OpenSIUC (Southern Illinois University Carbondale) · United States

This study evaluated commercial and vermicompost-blended green roof media for annual herb production in shallow modular trays on a university roof in Southern Illinois, Carbondale, during two experiments in 2011. The commercially available media generally produced more significant results for shoot growth parameters in sweet basil, Thai basil, and parsley. Partial shade also showed significant effects on shoot-to-root ratio in the first experiment, while most basil variables were insignificant in the second.