Research & reports

Rebecca T. Barnes, Peter A. Raymond · Ecological Applications · United States

This study examined nitrate export from small, closely spaced headwater watersheds in the United States representing urban, agricultural, and forested land uses, using the dual isotopic composition of stream nitrate (δ15N-NO3− and δ18O-NO3−) together with a numerical model to control for variation in geology, surficial materials, and climate. The isotopic values varied significantly among the three land-use types, with δ15N-NO3− reflecting nitrogen source and δ18O-NO3− reflecting biogeochemical processing; the highest nitrate concentrations coincided with the highest stream δ15N-NO3− values because of enriched anthropogenic sources — septic systems in urban watersheds and manure in agricultural watersheds — and average net removal of the available nitrate pool across urban and agricultural catchments was estimated at 45%, with the degree of removal varying by drainage area and organic carbon availability.

Zhifeng Chen, Guohua Lin, Liu Rongzhang, Lin Shu-wen · Nongye xiandaihua yanjiu · Global

This paper analyzes the significance of low-carbon patterns in urban agriculture development from economic, aesthetic, ecological, and philosophical perspectives, examining low-carbon patterns characterized by high-value industry structures, high resource efficiency, ecological safety, and mechanism innovation. Based on a city's natural resources, agricultural resources, and low-carbon technology, it summarizes low-carbon patterns of urban agriculture spanning multiple regions, scenic areas, and types, and proposes that local governments should actively create conditions to support and develop low-carbon industrial patterns of urban agriculture.

U.S. Environmental Protection Agency · U.S. EPA Local Climate and Energy Program Webcast · United States

In a June 8, 2010 EPA Local Climate and Energy Program webcast, Michael Berkshire of the City of Chicago's planning department described the city's green roof policy. He stated that on a 90°F day, the green-roofed side of City Hall stayed around 90°F while the non-vegetated County Building side reached about 170°F, and credited a sustainable development policy (started 2004, expanded 2008) and a 2008 stormwater ordinance requiring sites to retain 0.5 inch of rain or increase perviousness by 15% as key drivers of green roof adoption.

袁新华 · 环境 · Global

Amidst the trend of sustainable development, various environmentally friendly lifestyle attempts have spontaneously emerged worldwide. Examples include neighbors sharing laundry rooms and gardens to reduce resource consumption, exchanging old refrigerators for food or pianos via radio programs, and transforming abandoned land into community gardens. People who enjoy these sharing and collaborative behaviors are called "Pīn Kè".

XU Guang-zhong · Journal of Qinghai Normal University · China (Qinghai)

This analysis proposes the development of urban agriculture in Qinghai to address the ecological crisis arising from rapid urbanization. Urban agriculture, based on modern science and technology, integrates production, services, and consumption, possessing economic, ecological, and social functions. Promoting urban agriculture in Qinghai is stated to expand urban green areas and enhance the eco-city's functions.

홍석기 · 정책리포트 · France (Paris)

The "Le Grand Paris Project" proposes a major reform of Paris to transform it into a sustainable and globally competitive city for the 21st century. Proposed plans, to be implemented from 2020 to 2030, include physical spatial expansion beyond current boundaries, establishment of new governance for geographical and sociocultural integration, and a shift from a single-core radial to a multi-core linear urban structure. The project also suggests urban agriculture, agro-cities, and green car activation to improve the urban environment in line with the Kyoto Protocol.

Anges Yadouléton, Alex Asidi, Rousseau F Djouaka, B. James, Christian Agossou, Martin Akogbéto · Malaria Journal · Benin

A study in urban areas of Benin investigated the impact of rapid vegetable farming development on the emergence of insecticide resistance in Anopheles gambiae populations, using sociological data, bioassay tests, and biochemical analysis. The expansion of urban agriculture led to improper insecticide use for vegetable pests, exerting strong selection pressure on mosquito larval populations. This resulted in the emergence of insecticide resistance in malaria vectors, with permethrin mortality rates of 76% in Parakou, 23.5% in Porto-Novo, and 17% in Cotonou.

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

This chapter reviews three major types of urban greenery: public green areas, rooftop gardens, and vertical landscaping, from systematic and thermal benefit perspectives. It synthesizes worldwide research on these types of urban greenery and provides general guidelines for strategic landscaping in cities.

Isabelle Anguelovski · Urban Agriculture Magazine · Ecuador (Quito)

Marginalized urban communities in Quito, Ecuador, residing in informal settlements or on fragile hillsides, are highly vulnerable to climate change impacts like floods, landslides, droughts, and food scarcity. Many of these communities rely on urban agriculture for sustainable livelihoods and food security.

Xing Dong · China Environmental Protection Industry · Global

This paper introduces basic knowledge of rooftop gardens and discusses their various environmental benefits.

Antonio Ortega Santos · Historia Contemporánea · Cuba (La Habana)

This article reviews contributions from urban environmental history and examines the potential of productive strategies to transform cities into more sustainable systems. The latter part of the article presents the results of Urban Agriculture in Havana, Cuba. Havana's urban agriculture secured urban food supply levels and the sovereignty of urban agricultural producers, transforming the city into a more socio-environmentally sustainable model as an urgent measure against supply problems for the Cuban economy.

Andreas Buerkert, Eva Schlecht, Martina Předotová, Rodrigue V.C. Diogo, Katja Kehlenbeck, Jens Gebauer · eScholarship (California Digital Library) · Sub-Saharan Africa

This study analyzed urban and peri-urban agriculture (UPA) systems in major Sub-Saharan African cities, measuring carbon, nitrogen, phosphorus, and potassium fluxes and conducting biodiversity studies. In Niamey, low-input gardens showed annual gaseous carbon emissions of 20-25 t ha-1, predominantly CO2, and high-input gardens irrigated with wastewater had annual CO2-C emissions of 27 t ha-1, with N2O as a major nitrogen loss contributor. Animal manure stored in the open was subject to large carbon and nitrogen losses, indicating environmental tradeoffs. However, UPA gardens in Niamey maintained a large variety of fruit and vegetable species, with richness increasing with garden and household size and commercialization.

Qicheng Lu · Ecological Economy · Global

This paper studies the functions of urban agriculture on the evolution of eco-city as a self-organizational system, based on reviews of conceptions and meaning. It analyzes the synergy effects between developing urban agriculture and constructing eco-city from sharing effective, implementing effective, and synchronizing effective perspectives. The study concludes that a typical synergy relationship exists between developing urban agriculture and constructing eco-city.

Ernarosa Tominich · Educational Media Reviews Online · United States (Chicago)

"Simple Living with Wanda Urbanska" is a 2008 documentary exploring themes of land use, energy conservation, and urban "green earth" movements in major American cities. Host Wanda Urbanska conducts interviews and visits projects like green rooftop gardens and city farms on vacant lots. The documentary features a Chicago family demonstrating a "green" lifestyle, including communal gardening and local shopping.

June Komisar, Joe Nasr, Mark Gorgolewski · Open House International · Canada

This paper describes how Ryerson University in Toronto, Canada, has explored agricultural and food issues as design challenges in various student projects. These projects, ranging from community investigations to thesis projects, integrated food-related strategies like community gardens and edible landscapes, demonstrating their utility in addressing broader design challenges such as social inclusion and sustainable building practices.

· International Journal of Climate Change Strategies and Management · Global

This publication presents a table of contents for multiple papers addressing interdisciplinary aspects of climate change. Topics include the impacts of climate change on electricity generation and consumption, the role of cross-disciplinary models in the Irish housing sector, urban agriculture as a way to adapt modern cities, experiences in climate change policy-making, a climate stabilization fund, social learning on climate change among regional agents, costs and effectiveness of mitigation policies, campaign strategies by environmental NGOs, the role of sustainable buildings, quantifying vulnerability and adaptability of natural ecosystems, farming community concerns, local government risk assessment, approaches to resolving climate change, impacts on flood events, municipal solid waste management's impact on greenhouse gas emissions in Estonia, conducting interdisciplinary workshops, public opinion on climate change, and innovative multi-stakeholder approaches.

许光中 · 北京科技大学学报：社会科学版 · China (Qinghai Province)

This study examines urban agriculture in Qinghai Province, China, as a solution to urban ecological crises exacerbated by rapid urbanization. Urban agriculture, defined as modern agriculture integrating production, services, and consumption based on modern technology and diversified operations, can expand urban green spaces, improve urban ecology, and strengthen urban functions.

XU Guang-zhong · Journal of University of Science and Technology Beijing(Social Sciences Edition) · China

This article, using Qinghai Province as a case, argues that as urbanization accelerates and cities' ecological crises intensify, developing urban agriculture can help address this crisis. It describes urban agriculture as based on modern technology and reliant on agricultural industrialization, combining features of production, service and consumption, and states that promoting urban agriculture can expand green space, improve urban ecology, and strengthen urban functions.

E. Peduto, D. Satdinova · · United Kingdom

The available abstract is fragmentary and cuts off mid-sentence, but it states that some areas of London have already advanced considerably under the "Capital Growth" initiative launched in November 2008. That initiative is described as aiming to turn 2,012 pieces of land into green spaces for growing food, though the abstract breaks off before providing further study details or findings.

Sophie Graefe, Eva Schlecht, Andreas Buerkert · Outlook on Agriculture · Niger (Niamey)

Semi-structured interviews with 130 households in Niamey, Niger, characterized urban and peri-urban agriculture (UPA) and assessed resource use. The study found high use of livestock manure and indiscriminate use of nutrient-loaded wastewater for irrigation, leading to significant nutrient surpluses in UPA gardens. Initial calculations suggested large gaseous emissions of nitrogenous compounds and and leaching of nitrogen, phosphorus, and potassium to groundwater.

Pay Drechsel, Olufunke Cofie, Seydou Niang, Drechsel, Pay, Cofie, Olufunke, Niang, Seydou · AgEcon Search (University of Minnesota, USA) · Africa

This record is a reference to a book chapter on the sustainability and resilience of the urban agricultural phenomenon in Africa, and it does not contain specific research content or findings.

WU Yun-fe · Shanxi Architecture · Global

This paper demonstrates the benefits of rooftop gardens for improving living conditions in response to urban environmental problems, detailing nine aspects. These benefits include mitigating the heat island effect, increasing urban green spaces, and purifying city air. The paper also offers recommendations for the development of rooftop gardens.

Nyuk Hien Wong, Yu Chen · · Singapore

In Singapore, there was a need to demonstrate the thermal benefits of rooftop gardens with tangible data as a potential measure to mitigate the urban heat island effect. This study conducted local measurements and calculations to demonstrate the thermal benefits of rooftop gardens in the tropics.

Pay Drechsel · CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) · Global

This paper discusses the global food crisis, which has caused skyrocketing food prices and riots in some countries. Underlying the food crisis is the deeper issue of the looming water crisis.

Jason P. Kaye, Anandamayee Majumdar, Corinna Gries, Alexander Buyantuyev, Nancy B. Grimm, D. Hope, G. Darrel Jenerette, Weixing Zhu, Lawrence A. Baker · Ecological Applications · United States (Phoenix)

A study in a 7962-km2 area around Phoenix, Arizona, USA, used a hierarchical Bayesian model to predict soil organic carbon (oC), inorganic carbon (iC), total nitrogen (N), and available phosphorus (avP) storage. Both Bayesian and traditional approaches indicated that oC, N, and avP were higher in mesic residential and agricultural areas than in deserts or xeric residential areas. Cultural variables like impervious surface cover, tree cover, and turfgrass cover were significant predictors, and an estimated 1140 Gg of oC and 130 Gg of N had accumulated in human-dominated soils.