Research & reports
Peer-reviewed research and reports on community urban agriculture, food education, composting, welfare and more.
Theme
Critical findings
158 results(6 / 7)
Agriculture in the Urban Fringe: Analysis of Calabar and its Environs, Cross River State, Nigeria
2014Ekaete Francis Asuquo · · Nigeria (Calabar)
The impact of urban expansion on agricultural land in Calabar and its environs, Nigeria, was investigated. A survey of 150 questionnaires and comparative assessment revealed a decrease in agricultural land in the fringes as urban expansion persists and increases. Before 2013, more farmers owned larger plots, but much of this agricultural land has been converted to housing estates, roads, leisure resorts, and schools, indicating that urban expansion has negatively impacted agricultural land, reducing food productivity and leading to farmer unemployment.
Environmental trade-offsPeri-urban agriculturePolicyEconomicsEvaluation of Urban Forestry and Housing Patterns in Awka Metropolis of Anambra State, Nigeria
2014H. C. Agada, E. A. Obienusi, Emma E. Ezenwaji · Journal of environment and earth science · Nigeria
This study evaluated urban forestry and housing patterns in Awka metropolis, Anambra State, Nigeria, over a ten-year period (2001-2010). Analysis of land use data using linear regression and correlation coefficients confirmed a significant correlation between housing patterns (urbanization) and the distribution of trees (forestry). The least square regression results indicated that the rate of forest displacement is a direct consequence of increasing structural development in the study area.
Environmental trade-offsUrban–rural linkageClimate changePolicyImpacts of urbanization on urban agricultural landscape——A case study of Chang'an District, Xi'an City
2014Yu Wang · · China (Xi'an City)
This study analyzed the dynamic changes in urban agricultural landscape (arable lands and garden plots) due to urbanization in Chang'an District, Xi'an City, China, using remote sensing, GIS, and FRAG-STAT techniques. Compared to 1999, arable land area decreased and aggregation declined by 2.45% in 2011, while garden plot area increased and aggregation rose by 10.44%. Improved urbanization levels decreased arable land area and increased fragmentation, but correlations with garden plot landscape indexes were insignificant.
Environmental trade-offsUrban–rural linkageClimate changePolicyDynamics of peri-urban agricultural development and farmers' adaptive behaviour in the emerging megacity of Hyderabad, India
2013Zakir Hussain, Markus Hanisch · Journal of Environmental Planning and Management · India
This paper describes the adaptation of agricultural management practices in the urban periphery of Hyderabad, India, due to structural changes. Based on 120 farmer interviews, the study found that increasing costs for agricultural inputs like labor and land motivated farmers to intensify water, machine, and chemical use, which created problematic environmental impacts. Farmers also adapted by resorting to part-time farming and organizing efforts to share family labor.
Environmental trade-offsPeri-urban agriculturePolicyEconomicsEcological Integrity of a Peri-Urban River System, Chiraura River in Zimbabwe
2013Beaven Utete · Journal of Water Resources and Ocean Science · Zimbabwe
The ecological integrity of the peri-urban Chiraura River system in Zimbabwe was assessed through multivariate analysis of physicochemical parameters and the resident macroinvertebrate community. Monthly collections were conducted over five months from November 2011 to March 2012 at six sites, recording 1209 macroinvertebrates. Unsustainable anthropogenic activities, including industrial, domestic, and urban agricultural activities, were found to affect the water quality of the Chiraura River through run-off and increased effluent.
Environmental trade-offsClimate changeBiodiversityHealth and Environmental Hazards Posed by Urban Livestock Keeping in Enugu Urban, Nigeria: Implication for Climate Change Mitigation
2013AN Asadu, EM Igbokwe, JM Chah, IA Enwelu · Journal of Agricultural Extension · Nigeria (Enugu)
This study investigated farmers' perceptions of health and environmental hazards from urban livestock keeping in Enugu Urban, Nigeria, interviewing 75 heads of households. While all respondents were aware of general health and environmental implications, only 4.0% knew livestock could cause climate change. Identified environmental issues included crop destruction (89.3%), urban filth (89.3%), and noise (88.0%), while health issues included disease spread (50.7%), accidents (46.7%), and bad smell (86.7%).
Environmental trade-offsHealthClimate changeCommunitySalinity of irrigation water in the Philippi farming area of the Cape Flats, Cape Town, South Africa
2013CDR Aza-Gnandji, Yongxin Xu, Lincoln Raitt, Jonathan Levy · Water SA · South Africa (Cape Town)
This study explored the salinity of irrigation water from the Cape Flats aquifer in the Philippi farming area of Cape Town, South Africa, collecting water samples from boreholes and ponds in summer and winter. Concentrations of chloride, nitrate, potassium, and sodium exceeded target maximum limits set by DWAF and FAO guidelines. Groundwater and pond water were found to be brackish in most parts of the research area, with salinization primarily attributed to agricultural activities. The water is generally suitable for irrigation but requires caution for salt-sensitive vegetables.
Environmental trade-offsPeri-urban agricultureClimate changeUrban Agriculture Production Mode 3: Intensive Production of Vegetables
2013Danfeng Huang · Journal of Changjiang Vegetables · Global
This paper discussed the importance of intensive vegetable production in urban agriculture, highlighting its role in guaranteeing the supply, quality, and safety of fresh vegetables. It summarized key aspects of intensive production, including industrialized seedling production, facility production, efficient cultivation, postharvest processing, and commercial management, but also presented environmental problems and restricting factors in the development of intensive vegetable production.
Environmental trade-offsEconomicsClimate changeFood sovereignty & justiceImpact of illegal urban agricultural activities on bio-diversity of Emakhandeni high density suburb of Bulawayo, Zimbabwe
2013Patrick F. Banga · · Zimbabwe
Unsanctioned urban agricultural activities in Emakhandeni High Density Suburb of Bulawayo, Zimbabwe, negatively impact biodiversity. Researchers interviewed 100 people and conducted field visits, finding that the majority of cultivators operate outside existing laws and guidelines. This leads to progressive land degradation, massive deforestation, soil erosion, dried wetlands, lowered water table, and compromised groundwater quality due to pesticides and inorganic fertilizers.
Environmental trade-offsCommunityBiodiversityPolicyClimate changeKnowledge assessment on the effects of climate change due to keeping livestock in urban and peri-urban areas of Dar es Salaam, Tanzania
2013Shogo 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.
Environmental trade-offsClimate changePeri-urban agricultureFood educationOrganic cycleImplementing a Rainwater Sustainable Control in Sahel-Feedback from "Niayes" Zone of Dakar
2012Sylvestre 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.
Environmental trade-offsClimate changeUrban–rural linkagePolicyPeri-urban agricultureEvaluation on Actual Condition and Image Analysis of Roof Garden in Seoul, Korea
2012Minjae Kong, Kwang-Lai Park, Jin-Kwan Son, Ji-Hoon Shin · Journal of the Korea Society of Environmental Restoration Technology · South Korea (Seoul)
This study investigated the characteristics of rooftop gardens (farms) in 40 areas in Seoul, Korea. Cabbage, lettuce, pepper, and mini-tomatoes were the most preferred vegetables and fruits. Problems observed in rooftop gardens during cultivation included drainage systems, soil management, the cost or quality of planting mats, and diseases and insects.
Environmental trade-offsDIYCommunityHealthEconomicsHorizontal matter fluxes and leaching losses in urban and peri‐urban agriculture of Kabul, Afghanistan
2011Zikrullah Safi, Martina Předotová, Eva Schlecht, Andreas Buerkert · Journal of Plant Nutrition and Soil Science · Afghanistan (Kabul)
A two-year study in Kabul, Afghanistan, measured horizontal flows of C, N, P, and K, and leaching losses of N and P in 21 vegetable gardens, 18 cereal fields, and vineyards. The findings suggest that soils in extensive cereal fields are at risk of N and K depletion, vegetable gardens face K depletion, and vineyards may be oversupplied with nutrients, potentially contributing to groundwater contamination. These results merit verification.
Environmental trade-offsOrganic cyclePeri-urban agricultureAnopheles gambiae distribution and insecticide resistance in the cities of Douala and Yaoundé (Cameroon): influence of urban agriculture and pollution
2011Christophe Antonio‐Nkondjio, Billy Tene‐Fossog, Cyrille Ndo, Benjamin Menze Djantio, Serge Zebaze Togouet, Parfait Awono‐Ambene, Carlo Costantini, Charles S. Wondji, Hilary Ranson · Malaria Journal · Cameroon
This study assessed the influence of urban pollution and agriculture on malaria vector distribution and insecticide susceptibility in Douala and Yaoundé, Cameroon, from October 2009 to December 2010. Researchers sampled 1,546 anopheline larval breeding sites and analyzed water parameters. Findings showed mosquitoes from cultivated urban areas exhibited the highest insecticide resistance levels, with urban agriculture, rather than pollution, suggested as the major factor driving resistance.
Environmental trade-offsHealthClimate changeUrban–rural linkageSpatial dispersion and characterisation of mosquito breeding habitats in urban vegetable-production areas of Abidjan, Côte d'Ivoire
2010Barbara Matthys, Benjamin G. Koudou, Eliézer K. N’Goran, Penelope Vounatsou, Laura Gosoniu, Moussa Koné, G. Gissé, Jürg Utzinger · Annals of Tropical Medicine and Parasitology · Côte d'Ivoire (Abidjan)
Two surveys were conducted in market gardens of Abidjan, Côte d'Ivoire, during the rainy and dry seasons to identify mosquito breeding habitats. The study found that urban agriculture areas may lead to higher densities of mosquito breeding sites, with "agricultural trenches" between seedbeds being the most likely sites to be positive for Anopheles larvae and mosquito pupae.
Environmental trade-offsHealthUrban–rural linkageAgriculture urbaine et valorisation des déchets au Bénin : une approche de développement durable
2010Hygin Faust Kakai, Alban Gilles Kakai, Armelle Grey Tohouegnon · VertigO · Benin (Cotonou)
This study in Benin examined urban agriculture and waste valorization in Cotonou, Abomey, and Abomey-Calavi. In Cotonou, overexploitation of sandy, organic-poor soil in market gardening led to soil impoverishment, forcing gardeners to use chemical fertilizers with negative environmental impacts. However, some market gardeners adopted compost use, transitioning to organized organic urban agriculture after a waste management project supported waste valorization. This dynamic was not observed in Abomey, where urban agriculture is practiced in family spaces and public areas, unlike Cotonou's developed sites. Abomey-Calavi, despite rapid demographic growth, was almost devoid of urban agriculture practices.
Environmental trade-offsOrganic cycleCompostEconomicsHealthBumble Bees (Bombus spp) along a Gradient of Increasing Urbanization
2009Karin Ahrné, Jan Bengtsson, Thomas Elmqvist · PLoS ONE · Sweden (Stockholm)
This study investigated bumble bees in allotment gardens along an urbanization gradient from inner Stockholm to rural areas. Findings showed that bumble bee diversity decreased with increasing urbanization, from approximately eight species in rural areas to five to six species in urban allotment gardens. Higher variability in the abundance of certain species in the most urban areas suggested a potentially weaker reliability of the pollination ecosystem service in areas strongly influenced by human activity.
Environmental trade-offsBiodiversityPollinatorsCommunityPeri-urban agricultureUrban–agricultural water appropriation: the Hyderabad, India case
2009Mattia Celio, Christopher A. Scott, Mark Giordano · Geographical Journal · India (Hyderabad)
A study in Hyderabad, India, examined urban water capture and its impacts on pre-existing claims, particularly agriculture. Urban water appropriation often leads to conflict with existing water uses. The findings indicate that the magnitude and direction of impacts from urban water transfer on agriculture vary spatially and temporally, depending on location-specific rainfall patterns, existing water infrastructure and institutions, and farmers' adaptive capacities, including recourse to groundwater.
Environmental trade-offsUrban–rural linkagePolicyEconomicsDevelopment of vegetable farming: a cause of the emergence of insecticide resistance in populations of Anopheles gambiae in urban areas of Benin
2009Anges 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.
Environmental trade-offsEconomicsHealthClimate changeDeterminants of sustainability in urban and peri-urban agriculture
2009Andreas 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.
Environmental trade-offsOrganic cycleBiodiversityClimate changePeri-urban agricultureEconomicsCommercial horticultural practice in Nigeria: its socio-spatial effects in Lagos city.
2009Abegunde A. A, Emmanuel Olufemi Omisore, O. F. Oluodo, D O Olaleye · African Journal of Agricultural Research · Nigeria (Lagos)
A study in the Eti-Osa local government area of Lagos, Nigeria, investigated the socio-spatial effects of urban horticultural gardens. Of 75 identified gardens, 63 managers were interviewed, revealing that 79.4% of gardens were profit-oriented. Gardens had inadequate setbacks (mean 1.45 m) from roads, leading to off-street parking and traffic congestion. Only 20% of horticulturists aimed to improve urban aesthetics, indicating a need for urban planners to educate them to prioritize urban aesthetics over economic gain.
Environmental trade-offsEconomicsUrban–rural linkageImpact of urban agriculture on malaria vectors in Accra, Ghana
2008Eveline Klinkenberg, Philip J. McCall, Michael D. Wilson, Felix P. Amerasinghe, Martin J. Donnelly · Malaria Journal · Ghana
This study investigated the impact of urban agriculture on malaria transmission risk in Accra, Ghana, through larval and adult mosquito surveys. It found that Anopheles spp. and Culex quinquefasciatus outdoor biting rates were three and four times higher, respectively, in areas around agricultural sites compared to areas far from agriculture. The annual Entomological Inoculation Rate (EIR) was also higher in agricultural areas (19.2) than non-agricultural areas (6.6), suggesting that urban agricultural areas may increase malaria transmission risk by providing resting sites for adult mosquitoes.
Environmental trade-offsHealthUrban–rural linkageTo Subsidise My Income: Urban farming in an East-African town, by Dick Foeken
2008M. B. David · African Affairs · Kenya
This study on urban agriculture in the Kenyan town of Nakuru illustrates health and environmental problems associated with keeping livestock in urban areas, the small size of plots cultivated, and the dependence of urban households on rural sources of food. These findings were observed in the context of economic hardships occasioned by structural adjustment programmes since the 1980s.
Environmental trade-offsCommunityEconomicsHealthUrban–rural linkagePrecision application of water for peri-urban horticulture
2007Viola Devasirvatham, P. S. Cornish · International Journal of Water · Australia
Peri-urban horticulture in Australia requires irrigation for year-round vegetable production. Subsurface Drip Irrigation (SDI) offers higher water use efficiency and crop yields, with the potential to reduce environmental risks from drainage and runoff. However, SDI has potential disadvantages, including poor germination or crop establishment and uneven wetting patterns. Research is needed to solve these problems and enable environmentally acceptable vegetable production.
Environmental trade-offsPeri-urban agricultureEconomicsClimate changeOrganic cycleThe Effect of Land Use on Soil Health Indicators in Peri‐Urban Agriculture in the Humid Forest Zone of Southern Cameroon
2006Adolphe Monkiédjé, Michael Spiteller, D. Fotio, Premasis Sukul · Journal of Environmental Quality · Cameroon (Yaounde)
This study evaluated the effect of different land uses on soil health indicators in peri-urban agricultural areas of Yaounde, Cameroon, by comparing five tilled sites with native forest land. While most cropped land showed higher levels of many soil health indicators, cultivation of crops like corn and sugarcane significantly impacted native soil quality. Specifically, phenol oxidase, microbial biomass C/organic C, and microbial biomass C/microbial biomass P were negatively affected, indicating negative management impacts on soil health.
Environmental trade-offsPeri-urban agricultureOrganic cycleClimate change