urban agriculture Articles
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Urban agriculture and sustainable urban systems: a benefits assessment of the garden movement in Havana, Cuba
The sustainability of urban systems is at the forefront of many national environmental agendas, both in developing and developed countries. Urban agriculture (UA) is a concept that has captured the imagination of a growing number of environmentalists, poverty activists and urban planners alike, with its capacity to deal with a number of environmental and social pressures that arise in urban ...
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A systematic overview of urban agriculture in developing countries from an environmental point of view
Urban agriculture can contribute to food security and poverty alleviation in developing countries. It can also help to improve public health and resource management by reusing excreta, wastewater and organic solid waste. This paper presents a systematic overview of urban agriculture in low and middle-income countries and identifies research needs. The cross-cutting issues, especially between ...
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The emergence of urban agriculture: Sydney, Australia
Across the world the phenomenon of urban agriculture (UA) is defining itself after emerging from a mainly grass-roots response, evidenced in the Sydney Metropolitan Region by the Hawkesbury Harvest phenomenon and the Sydney Food Fairness Alliance, to powerful global forces which are negatively and paradoxically impacting on the quality of life of urban and farming communities. In the developed ...
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From urban-rural to global dependencies
Against the background of global urban knowledge economy, this paper discusses some of the challenges that sustainable urban life is facing in the global knowledge economy of the 21st century. The paper makes an overview of the fundamental change in urban-rural relations, urban and rural demographics, the concepts of place surplus and place attractiveness, agglomeration and the new economic ...
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Changing mechanisms of agricultural water use in the urbanization and industrialization of China
The rapid urbanization and industrialization of China in recent years has presented serious challenges for the country in guaranteeing the preservation of agricultural water resources. This study selected four areas in China, each with different water resource and social development conditions. The relationship between the processes of urbanization and industrialization and recent ...
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Understanding the role of disturbance in peri-urban agricultural systems and communities: new concepts and principles to guide strategic intervention
New conceptualisations of peri-urban zones are needed to trigger a deeper understanding within professionals and practitioners of appropriate intervention strategies that build the resilience of sustainable agriculture and food production within peri-urban communities. This paper posits a theoretical construction of the peri-urban zone, derived from applying a biomimicry framework. Biomimicry is ...
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Shorter supply chains through urban indoor farming
There are many reasons why a government or international organization may advocate the introduction of urban indoor farming. This week we look at some of the main motivations for bringing agriculture closer to the consumer. While urban indoor agriculture may have seemed a far-fetched dream in the past, developments in city planning and technological innovation are making it into a reality. These ...
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The sanitation and urban agriculture nexus: urine collection and application as fertilizer in São Paulo, Brazil
Separately collected urine is an attractive potential fertilizer because of its high nutrient content, low cost, and inherent linkage of urban wastewater management and peri-urban agriculture. Urine from waterless urinals was applied to corn and lettuce plants to examine the impact of urine application rates and frequency on plant growth and soil parameters. In both corn and lettuce ...
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Led grow light bar
1. Urban Vertical Agriculture - Horticulture LED Production Module grow 2. High PPFD, One Bar equivalent to 3 T8 Tube, Build your plant farm with fewer lights! 3. Different LED chips in one lens, Spectral radiation uniform, Lens + Reflector cup, Concentrating radiation, Energy saving 50%,Beam angle 60 ° 4. Ultra-thin 21mm,multi-shelf lighting plant growth lights 5. Silicone potting waterproof ...
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New study finds 20 percent of natural habitats at risk from future development
Human population is expected to soar to between 9 and 10 billion by 2050, with a growing number of people moving into the middle class and requiring more energy, natural resources and animal products. This combination of population growth and resource demand will put increased pressure on the planet’s resources, a fact that has interested parties from academia, nonprofits, government, ...
By Ensia
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Our finest gold: agrarian perspectives on urban technology from the mid-19th century to present-day ecocyclical society
This study examines how agricultural science, from the mid-19th century to present day, has maintained that urban technology should be designed in response to agricultural interests. Recycling of urban waste was regarded in the mid-19th century as a way of augmenting the fertility of the soil, while at the same time solving the sanitary problems of urban communities. By about 1900 this ...
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Estimation of norovirus and
Ascaris infection risks to urban farmers in developing countries using wastewater for crop irrigationA quantitative microbial risk analysis—Monte Carlo method was used to estimate norovirus and Ascaris infection risks to urban farmers in developing countries watering their crops with wastewater. For a tolerable additional disease burden of≤10−4 DALY loss per person per year (pppy), equivalent to 1 percent of the diarrhoeal disease burden in developing countries, a norovirus reduction of 1–2 log ...
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Riparian woody plant diversity and forest structure along an urban-rural gradient
Changes in riparian woody plant assemblages are anticipated in the southeastern United States due to increases in urbanization rates. Because riparian forests serve important roles in maintaining water quality and biodiversity, understanding how they respond to urbanization is crucial. The objective of this study was to examine forest structure and woody vegetation diversity indices of riparian ...
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Technical coefficients of direct use of water in monetary terms for agriculture and urban water use
The San Francisco Integration Project is a Brazilian government project aiming to bring water to the semiarid region of the northeast. The project provides funding for two diversions of the San Francisco River, supplementing the supply of local water in four Brazilian states. The Piranhas-Açú and Jaguaribe basins will become the largest recipients of these water deliveries. In this paper, we ...
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Comparative sensitivity of field and laboratory populations of Hyalella azteca to the pyrethroid insecticides bifenthrin and cypermethrin
Hyalella azteca are epibenthic invertebrates that are widely used for toxicity studies. They are reported to be more sensitive to pyrethroid insecticides than most other test species, which has prompted considerable use of this species in toxicity testing of ambient surface waters where the presence of pyrethroids is suspected. However, resident H. azteca have been found in some ambient water ...
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Urban and agricultural pesticide inputs to a critical habitat for the threatened delta smelt (Hypomesus transpacificus)
The Cache Slough complex is an area of tidal sloughs in the Sacramento‐San Joaquin River Delta of California, and is surrounding by irrigated agricultural lands. Among the species of concern in the area is the delta smelt (Hypomesus transpacificus), a federally‐listed threatened species. Releases of the organophosphate insecticide chlorpyrifos and pyrethroid insecticides were examined to ...
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A time domain transmission sensor with TDR performance characteristics
Abstract Time domain reflectometry (TDR) has become a standard method for determining water content in soils and porous media. However, the cost of instrumentation and the level of user ability required often limit its application, especially for agricultural and urban soil water management. The objective of this paper is to report on a new, lower cost time domain transmission (TDT) sensor and to ...
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Detection of biotic responses to urbanization using fish assemblages from small streams of western Georgia, USA
We examined relationships between stream fish assemblages and land use alteration associated with urbanization in 15 lower Piedmont watersheds along an urbanization gradient north of Columbus, western Georgia. Based on land cover data from 2002 Landsat 7 TM imagery aerial photos, streams drained watersheds that were largely urban, developing (suburban), agricultural (pasture), managed pine ...
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Pesticide and Pathogen Contamination of Vegetables in Ghana’s Urban Markets
Abstract The objective of the study was to determine and compare the current level of exposure of the Ghanaian urban population to hazardous pesticide and fecal coliform contamination through the consumption of fresh vegetables produced in intensive urban and periurban smallholder agriculture with informal wastewater irrigation. A total of 180 vegetable samples (lettuce, cabbage, and spring ...
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Urban farming is booming, but what does it really yield?
City-based agriculture produces 15 to 20 percent of food globally. In the U.S., its benefits go far beyond nutrition. This story was produced in collaboration with the Food & Environment Reporting Network, a non-profit investigative news organization. Midway through spring, the nearly bare planting beds of Carolyn Leadley’s Rising Pheasant Farms, in the Poletown neighborhood of ...
By Ensia
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