Research & reports

Lena Katharina Mietz, Bárbara Civit, Alejandro Pablo Arena · Agroecology and Sustainable Food Systems · Global

This review focuses on the present state and methodology of life cycle assessment (LCA) to evaluate the sustainability of urban agriculture. It notes that while urban agriculture is seen as a potential alternative for a resilient food system, existing case studies are mostly incomplete and lack diversity. Further research is needed, especially the integration of social and economic perspectives, to achieve a comprehensive scientific understanding.

Yu Huan, Steffen Nijhuis, Nico Tillie · Urban forestry & urban greening · Global

This systematic literature review analyzed 70 empirical research articles on urban agriculture, ecosystem services, and design research to identify gaps in design knowledge. The review found that while "research for design" is prevalent and offers abundant design knowledge, the infrequent use of "research through design" hinders the transition from implicit to explicit design knowledge, leading to a shortage of operational guidelines. The study proposes a framework for systematic design knowledge of urban agriculture to address these gaps and facilitate knowledge transformation.

Ahmya Ayaka, Fujita Hanako, Hide Haruka · Techno Agriculturae Studium of Research · Japan

This study explored the impact of verticulture technology on urban agriculture in Japan using a mixed-methods approach, including field experiments, farmer surveys, and production record analysis. The findings indicated that verticulture technology significantly improved crop yields by up to 30% per square meter and reduced water usage by 50% compared to traditional urban farming. It also lowered greenhouse gas emissions and minimized land use, demonstrating its potential for enhancing food production efficiency and sustainability in urban settings.

Marcelo Macedo Guimarães, Mariluce Paes de Souza · Revista de Gestão Social e Ambiental · Brazil

A qualitative study of a Conservation Unit in the Brazilian Amazon (the Lago do Cuniã Extractive Reserve) analyzing the role of forests within the water-energy-food nexus, focusing on how traditional populations use non-wood natural resources for their survival. Data were collected through questionnaire-based interviews and non-participant observation. The results show that maintaining forest resources improves water quality, controls erosion and resilience against droughts and floods, contributes to energy supply, and contributes to food safety for residents of the conservation unit. The authors note policy implications for management practices to conserve forests and to protect the quantity and quality of rivers, lakes, and aquatic and agricultural ecosystems in the reserve.

Agnès Fargue‐Lelièvre, Jason K. Hawes, Benjamin Goldstein, Lidia Poniży, Erica Dorr · Bulletin of the Atomic Scientists · Global

This 2024 essay in the Bulletin of the Atomic Scientists states that urban agriculture brings many benefits to its participants but is not guaranteed to be more climate-friendly than conventional agriculture. It adds that there are some specific steps urban farmers can take to cut carbon emissions.

Shan He, Primož Poredoš, Hao Qü, Xinge Yang, Mengjuan Zhou, Lulu Bai, Jiadong Shi, Wenshuai Chen, R.Z. Wang, Swee Ching Tan · Advanced Functional Materials · Global

A composite adsorbent combining manganese(II)-ethanolamine complexes with a hierarchical, interconnected polypyrrole-doped matrix was developed to reduce vapor diffusion resistance, a key factor limiting scale-up kinetics, achieving water uptake of 2.54 g per gram at 90% relative humidity with 62% of the water released within 30 minutes, enabling multiple daily capture-release cycles. A hybrid desorption mode combining photovoltaic electrical heating and solar heating achieved stable, high-yield water production, and simulation and feasibility verification showed that an atmospheric-water-irrigated rooftop farm could produce 879.9 g of water per square meter of sorbent per day and 1.28 kg of food per square meter of device within 14 days, without human intervention and independent of external water inputs.

Akpınar, Musab Talha, Korkut, Cem · Munich Personal RePEc Archive (Ludwig Maximilian University of Munich) · Global

This chapter surveys how the basic sciences -- physics, chemistry, biology and mathematics -- contribute to Sustainable Smart Cities. It states that physics underlies energy efficiency and structural design, chemistry drives sustainable materials and pollution control, biology supports green space, biodiversity and ecosystem services including urban agriculture, and mathematics/data science enable real-time monitoring and resource allocation, arguing for continued interdisciplinary investment in research and education.

Albin Mathew -, Sanu K Thekkath -, N Sneha · International Journal For Multidisciplinary Research · Global

This paper is a review that surveys various forms and definitions of urban farming and discusses its role in implementing circular economy strategies and strengthening urban food security. Drawing on case studies within institutions such as schools and Anganwadi centres, it argues that urban farming initiatives can promote sustainability, community engagement and equitable participation, that urban farming and neighbourhood development are interconnected in ways that support an inclusive society and sustainable urban design principles, and advocates positioning urban farming as central to urban planning.

Lorenta In Haryanto, Tri Yuni Hendrawati, Darto Darto, Febri Yani, Firgi Adha Listanto, Dimas Yoga Pradipta Pratama · Abdimas Jurnal Pengabdian Masyarakat Universitas Merdeka Malang · Indonesia

A community-service report on introducing solar-powered water pumps for hydroponic systems with the farmer group Hidroponik Generik (HG) in Pesanggrahan, Indonesia, from April to October 2024, including training and assistance in vertical hydroponic technology and solar power generation. An 800 Wp solar panel supplied 1,600 Wh daily, powering pumps for 12-13 hours and cutting electricity usage by 66%, reducing monthly expenses by 10%. Combined with the vertical hydroponic installation, farm income increased by 15%, and participants' understanding of solar technology improved by 45%.

AZOLLA Projects · Open MIND · Europe

This document, prepared under Activity 2.1 of the Carbon Farming MED project, defines the criteria for selecting pilot farms for a carbon-farming program across two Mediterranean regions, Italy and Spain. Farms practicing regenerative agriculture or agroforestry were required to meet mandatory conditions — legal compliance, access to internet and car transport, and the economic capacity to dedicate 0.5 ha to the study — plus preferable conditions such as soil free of heavy-metal contamination, historical soil analysis data, pollinator habitat and biological corridors, efficient water management, participation in farmers' markets or community-supported agriculture, a track record with circular-economy practices, and potential for scaling. Three farms in Catalonia and three farms in Spain were selected, with primary activities of viticulture, olive growing, horticulture, and agroforestry; on-farm data will be collected from these farms to monitor and validate soil organic carbon (SOC) content.

Adriana Díaz Caamaño · Academia XXII · Spain

This essay frames urban food cultivation and harvesting, once a common practice around human settlements in past centuries, as a new trend for urban sustainability amid an environmental crisis driven by city growth and its planetary impact. It argues that unsustainable agriculture is straining to feed a vast population with little awareness of the countryside or of its benefits for mental and physical well-being, but presents no specific study data or case findings.

Aji Saputra, Oekan S. Abdoellah, Gemilang Lara Utama · Local Environment · Indonesia

A commentary on the current state of urban agriculture implementation in large Indonesian cities, the initiatives underway and the mechanisms for pursuing stated goals. It identifies land scarcity, inadequate urban agricultural infrastructure, financial constraints, and regulatory and administrative problems as the major obstacles to implementation. It also states that urban agriculture improves quality of urban life by providing fresh, healthy food and fostering community engagement, and cites Singapore, New York and Ghana as examples showing the importance of policy support, innovation and community involvement.

Putri Balqis, Riski Wulandari, Muhammad Zulfandi · Jurnal Teknologi Cerdas · Indonesia

Reducing carbon emissions is a critical task in addressing global climate change, and establishing rooftop gardens in urban areas is presented as one approach that could be adopted. This paper is a literature review examining the environmental advantages of rooftop gardens, with particular focus on their capacity to mitigate carbon emissions. It reviewed diverse sources concerning rooftop garden implementation for carbon mitigation. The review states that rooftop gardens possess significant capacity to mitigate carbon emissions and address the challenges posed by climate change, though successful installation requires careful planning and a thorough understanding of environmental and technological aspects. Rooftop gardens are described as enhancing CO2 absorption, lowering surface temperatures, and decreasing building energy needs by improving thermal insulation, as well as contributing to improved air quality and urban biodiversity. The review identified numerous designs and best practices that could optimize the ecological and economic advantages of rooftop gardens, and points to the possibility of incorporating them into urban planning as an approach to addressing climate change and enhancing urban quality of life.

Assyifa Fauzia, Evi Frimawaty, Hadi Susilo Arifin · Holistic Journal of Tropical Agriculture Sciences · Global

This literature review examines the role of urban agriculture as an ecosystem services provider in mitigating urban environmental deterioration. It states that urban agriculture adds various functions across different landscape scales and can provide numerous benefits when managed correctly. The review method compiled literature on urban agriculture and ecosystem services across provisioning, regulating, and cultural service categories. Results describe urban agriculture as taking diverse forms, from private gardens to community plots, addressing limited public funding and promoting greening initiatives; it is described as contributing to biodiversity conservation and to regulating the urban microclimate, including reduced urban heat island effects, wind protection, and pollutant absorption. It is also described as adding aesthetic value to urban spaces, promoting cultural integration, and functioning as a multifaceted strategy for sustainable urban development addressing food security, resilience, and well-being. Amid challenges including threats to urban biodiversity and the need for proper green-space management, the review frames urban agriculture as a holistic approach contributing to cities' visual, cultural, and environmental fabric.

Miriam Elizabeth Mery-Ruiz, Gabriela Carmona Ochoa, Areli Lopez-Montelongo · Apple Academic Press eBooks · Mexico

Focusing on the Alameda Zaragoza district in Saltillo, Mexico, this study investigates the relationship between urban morphology and sustainability in the built environment. It used an ethnographic methodology involving qualitative social media research, collecting images and text through Microsoft Bing word searches and analyzing them with nubedepalabras software to identify semantic networks. The findings show that online communities' urban imaginaries offer insights into sustainability strategies, and the study recommends expanding the analysis to other case studies and including search results in additional languages.

Godwin K. Naazie, Isaac Agyemang, Anthony Mwinilanaa Tampah-Naah · Heliyon · Ghana

A quantitative survey of 362 urban households across diverse neighborhoods in Ghana used descriptive statistics, chi-square tests, and binary regression to examine socioeconomic factors behind urban agriculture participation under climate stress. Household size and income were significant at the 0.05 level, middle- and high-income households participated more than lower-income ones, and land was acquired mainly through purchase, which the study identified as a barrier to participation.

Francesco Orsini, Giuseppina Pennisi, Giorgio Gianquinto, Michael Martin · International Journal of Vegetable Science · Global

This paper argues that widely publicized figures on urban agriculture's environmental impacts lack the methodologically sound evidence needed for valid comparison, before conclusions can be drawn. It addresses problems in comparatively assessing environmental performance between rural and urban farming and argues for the need for specifically designed indicators capable of comprehensively assessing multifunctional urban agriculture.

Francisco Tomatis, Monika Egerer, Luis Manuel Navas-Gracia · Horticulturae · Spain

A study of twelve plots across four urban allotment gardens in Valladolid, Spain (Horticulturae, 2024) examined food production, cooling effects, and gardener perspectives. Crop selection matched broader Global North urban-gardening trends, adapted to limited plot space and varying by season. The gardens provided more stable and cooler temperatures than urban gray spaces, though the cooling effect was smaller than that of urban parks, and was most pronounced in summer. Greater crop cover at the plot level produced a stronger cooling effect, while crop abundance and diversity showed only a weak correlation with cooling benefits. Gardener surveys found awareness of climate change and its perceived direct threat to crops, health, and the city, along with concern about future water availability for crop growth and garden development.

J Resmi, K Vismaya, V. Chitra, S K Anjana, K V Sumiya · International Journal of Environment and Climate Change · India

Focusing on the role of trees and forested ecosystems in sustainable development and climate change adaptation and mitigation, this study compares Miyawaki forests — a high-density planting method developed by Japanese botanist Akira Miyawaki to intensify green cover and support local biodiversity — with food forests, planned and planted forests of food plants providing a variety of food year-round. The study sites were in Palakkad district, Kerala, India: Krishi Vigyan Kendra Palakkad, where a Miyawaki forest patch was established, and V.T. Bhattathiripad College in Sreekrishnapuram, where a food forest was established. While both approaches aim to restore ecosystems and enhance biodiversity, they differ in design, purpose and management: the Miyawaki forest reconnects with nature by supporting native flora and fauna for biodiversity conservation and habitat restoration, while the food forest reconnects with nature by providing a food source for pollinators and habitat for many animals, and is described as environmentally friendly because it requires no chemical pesticides. Both techniques are described as effective for establishing urban forests and converting unproductive wasteland into ecologically and socially beneficial productive land.

Górna, Ada · · Global

A book examines the position of urban agriculture within the spatial and functional structure of cities in the Global South through case studies of three cities: Havana, Singapore and Kigali. Drawing on fieldwork conducted in each city, it documents the diverse characteristics of urban agriculture across differing socio-economic, spatial, political and environmental conditions and identifies constraints on its development.

Haochen Zhao, James T. O’Connor, Sarah Zou, Zakaria M. Solaiman, Bede S. Mickan, Nanthi Bolan · Soil Use and Management · Australia

At six community gardens across three soil mapping units — calcareous deep sands, coloured sand and pale sands — in the Perth metropolitan area, Australia, soil samples were compared between cultivated raised beds and adjacent bare ground used as a control. Raised-bed soils showed lower bulk density, higher pH buffering capacity, more available nitrogen, phosphorus and potassium, greater cation exchange capacity, total carbon and microbial biomass than surrounding urban soil, and were estimated to have accumulated 0.55 kg of carbon per square meter (5.5 t/ha) in the top 10 cm, with no significant heavy metal contamination detected in any of the garden soils. The improved soil health and carbon storage were attributed mainly to regular application of compost produced within the gardens.

Madison Powers · · Global

This chapter surveys the food-security implications of agricultural land use, unsustainable features of widespread food production practices, and the debate over agricultural intensification versus extensification, then examines land use's consequences beyond the land itself for groundwater, surface water, oceans, ambient air quality, and planetary systems. It explains the causes of forest destruction and fragmentation driven by the global expansion of land used for "high-risk commodities," the linkage between deforestation and declining terrestrial biodiversity, and the global market dynamics driving both crises. It assesses socioeconomic and ecological shortcomings in some proposed nature-based solutions, showing that they perpetuate an unsustainable business-as-usual approach, and summarizes how these land-use issues are conceptualized as human-rights concerns and translated into policy proposals.

Tarek Ben Hassen, Hamid El Bilali · · Global

This book chapter combines bibliographical and topical analysis of scholarly and gray literature with case studies from Middle East and North Africa (MENA) countries to examine the state of urban and peri-urban agriculture (UPA) amid regional climate pressures — rising temperatures and frequent droughts damaging limited water resources and threatening agriculture and food security. The chapter reports that UPA in the region lacks adequate infrastructure and resources, including access to water, suitable land and equipment, and that in many MENA cities, the absence of government initiatives combined with land tenure problems and high land prices makes UPA less prevalent and less viable; it concludes that improved policy support and enabling regulations — including zoning rules and financial and technical support — are needed to expand UPA in the region.

Bambang Tri Kurnianto · West Science Nature and Technology · Global

A review article examining urban farming practices — including rooftop gardens, vertical farms and community gardens — as approaches to the land scarcity and food-security pressures of rapid urbanization. Drawing on case studies from cities worldwide, it discusses their reported role in improving food access, reducing carbon footprints and fostering social cohesion, and argues for integrating urban agriculture into urban planning together with supportive policy and community engagement. The article does not report original data, a defined study site, or quantified outcomes.

Rosli Muhammad NAIM, Maisarah Abdul MUTALIB, Aida Soraya SHAMSUDDIN, Mohd Nizam LANI, Indang Ariati ARIFFIN, Shirley Gee Hoon TANG · Frontiers of Agricultural Science and Engineering · Global

A review article on sustainable agriculture and food systems characterizes sustainable agriculture as farming practices that meet immediate needs while preserving future generations' capacity to meet theirs, with sustained productivity, pollution reduction, and economic viability as primary aims. Drawing on existing research, it reports benefits including climate resilience, reduced greenhouse gas emissions, improved water quality, enhanced biodiversity, improved soil fertility, and stronger rural livelihoods, alongside challenges such as substantial transition costs, conflicting policy objectives, and the persistence of conventional methods. The review identifies strategies including agroforestry, agroecology, urban agriculture, farmer knowledge exchange, ecosystem-service payments, and shorter supply chains as ways to accelerate progress, contingent on appropriate policy and incentive support.