Optimize urban food production to address food deserts in regions with restricted water access

Tong, Daoqin; Crosson, Courtney; Zhong, Qing; Zhang, Yinan

doi:10.1016/j.landurbplan.2020.103859

Cited by 8 publications

(7 citation statements)

References 60 publications

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“…For the areas with high internal density in the urban space and many external restrictions, integrating occupied land and intensively using existing construction land will help maintain the ecosystem stability [25], and replacing simple horizontal expansion with urban vertical development is also an effective urban development method [76]. In addition, although the existing studies have shown that the increase in the population density in the contiguous areas where arable land is concentrated can effectively improve FS in the rural areas [77], in urban agglomerations, the population density still needs to be controlled, which can reduce the population's demand for food and ease the pressure on FS [78].…”

Section: Implications For Ecological Environment Improvement In Urban Agglomerationsmentioning

confidence: 99%

Impacts of Urban Expansion Forms on Ecosystem Services in Urban Agglomerations: A Case Study of Shanghai-Hangzhou Bay Urban Agglomeration

et al. 2021

Remote Sensing

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Exploring impacts of urban expansion on ecosystem services has become a hot topic for regional sustainable development, while analyzing the ecological effects of urban expansion forms under different expansion intensities and city sizes is relatively rare. Therefore, taking a typical urban agglomeration, Shanghai-Hangzhou Bay Urban Agglomeration, as a case study, this study first analyzed the dynamics of urban expansion forms (leapfrogging, edge-expansion, and infilling) and four critical ecosystem services (carbon sequestration, food supply, habitat quality, and soil retention) in three periods from 1990 to 2019. The multiple linear regression model and zonal statistics analysis model were used to quantitatively identify the impacts of urban expansion forms on ecosystem services, taking into account different expansion intensities and city sizes. The results showed that the urban expansion trend in the study area experienced a morphological change from integration to diffusion and then to integration in 1990–2019; edge-expansion was the dominant expansion form. Food supply decreased continuously while other ecosystem services had fluctuating changes, and they all had spatial heterogeneity. The leapfrogging, edge-expansion, and infilling all had negative impacts on ecosystem services, and among them, the edge-expansion intensity had the highest influence degree in the early expansion, and the leapfrogging intensity occupied the dominant position in all influences with the expansion of urban scales. For different city sizes, the impact of edge-expansion in large-scale cities was greater than in small-scale cities in the early expansion, and the impact of leapfrogging in large-scale cities exceeded the edge-expansion in the subsequent expansion. These findings will help further understand the influential mechanisms between urban expansion and ecosystem services and provide a scientific basis for formulating reasonable urban planning.

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Section: Implications For Ecological Environment Improvement In Urban Agglomerationsmentioning

confidence: 99%

Impacts of Urban Expansion Forms on Ecosystem Services in Urban Agglomerations: A Case Study of Shanghai-Hangzhou Bay Urban Agglomeration

et al. 2021

Remote Sensing

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“…The experimental data were from April 2019 to May 2019 (for PV shading, Figure 3) and from December 2018 to June 2019 (for vertical farming, Figure 4). The recorded data included: 1 ⃝ GHI (type: SPN1-A1815, W/m 2 ); 2 ⃝ ambient temperature (type: RM Young 92000, • C); 3 ⃝ wind speed (type: RM Young 05103, m/s); 4 ⃝ PV module's temperature (type: RTD Pt 100, • C); 5 ⃝ incident solar radiation (type: IMT Si-420TC, W/m 2 ); 6 ⃝ output electricity recorded by a maximum power point tracking controller (type: BlueSolar charge controller MPPT, Wh/m 2 ); 7 ⃝ vertical farming data including the photosynthetic photon flux density (PPFD, type: Quantum PAR Meter); 8 ⃝ average dry weight of each plant in each planting cycle. The data collection frequency is once per minute ( 1 ⃝-7 ⃝).…”

Section: Methodsmentioning

confidence: 99%

“…Reducing the energy consumption of residential buildings and improving the comfort of the indoor environment are important parts of solving the urban energy crisis and improving the quality of the human settlement environment. In addition, the urban-rural gap and globalization have significantly increased food mileage [5]; however, it is still hugely challenging to fully obtain healthy and affordable food in many cities and regions [6]. At present, vertical farming has been adopted to address the limitations of traditional agriculture, the shrinking area of arable land, and increasing food demand [7,8].…”

Section: Introductionmentioning

confidence: 99%

Efficiency Analysis of the Photovoltaic Shading and Vertical Farming System by Employing the Artificial Neural Network (ANN) Method

Hao,

Tablada,

Shi

et al. 2023

Buildings

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Productive facades, consisting of photovoltaic shading and vertical farming systems, have been proposed as a means to improve the thermal and visual status of residential buildings while also maintaining energy performance and providing vegetables. However, how to quickly and accurately predict electricity and vegetable output during the numerous influencing architectural and environmental factors is one of the key issues in the early stages of design, and few studies have investigated the impact of such structures on both indoor environmental qualities and production performance. In this paper, we present a novel prediction method that uses experimental data to train and test an artificial neural network (ANN). The results indicated that using the Bipolar Sigmoid activation function to process the experimental data input to the artificial neuron network gives more accurate predicted results both in the yield of photovoltaic shading and vertical farming systems. In addition, this prediction method was applied to a typical high-rise residential building in Singapore to assess the self-sufficiency potential of high-rise residential buildings integrated with productive facades. The results indicated that the upper part of the building can meet 20.0–23.1% of the annual household electricity demand of a family of four in a four-room residential unit in Singapore and almost the entire year’s vegetable demand, while the middle part can meet 18.4–21.2% and 89.1%, respectively. The results demonstrated the importance of a productive facade in reducing energy demand, enhancing food security, and improving indoor visual and thermal comfort.

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“…Results are presented for four typological designs with their associated water harvesting and food production capacities the community engagement conducted to reach these design outcomes. Building on previously published research by the author with co-authors, the paper concludes that if these design typologies were implemented across the 711 acres of available municipal land in current food desert areas, over 100% of the nutritional needs of these food desert areas would be met (Tong et al 2020). The work culminated in an outdoor exhibition in a large historic garden in Tucson open to the public to disseminate the research, stimulate conversation, and offer a platform to gather community support around the relocalization of urban food systems.…”

Section: Introductionmentioning

confidence: 92%

Addressing Food Deserts Through Re-localized Agriculture: Four Design Typologies with Community Engagement for Urban Food System Expansion on Available Municipal Land

Crosson¹

2023

In Commons

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Tucson, Arizona has been a historic passageway and home to a rich overlay of settlement patterns for over 4,000 years. Currently, 13.6% of current Tucson residents live in food deserts, areas that are low-income and have restricted access to healthy and affordable foods. Despite its agricultural history, recent efforts to relocalize urban food production to meet these local nutritional needs face stern criticism that the city is already water-stressed and cannot afford the irrigation required for food growth. This project investigated the capacity for Tucson to expand its urban food system to meet food desert nutritional demands using only sustainable water supplies on vacant municipal land. Four typologies on identified land owned by community partners were tested through design inquiry and corresponding water and food production calculations. The paper concludes that if these design typologies were implemented across the 711 acres of available municipal land in current food desert areas, over 100% of the nutritional needs of these food desert areas would be met (Tong et al. 2020).

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Optimize urban food production to address food deserts in regions with restricted water access

Cited by 8 publications

References 60 publications

Impacts of Urban Expansion Forms on Ecosystem Services in Urban Agglomerations: A Case Study of Shanghai-Hangzhou Bay Urban Agglomeration

Impacts of Urban Expansion Forms on Ecosystem Services in Urban Agglomerations: A Case Study of Shanghai-Hangzhou Bay Urban Agglomeration

Efficiency Analysis of the Photovoltaic Shading and Vertical Farming System by Employing the Artificial Neural Network (ANN) Method

Addressing Food Deserts Through Re-localized Agriculture: Four Design Typologies with Community Engagement for Urban Food System Expansion on Available Municipal Land

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