Research & reports

Ceccanti F., Bischi A., Desideri U., Baccioli A. · Energy Conversion and Management · 国際比較（トロンハイム・上海・ドバイを想定したモデル計算）

Filling a gap left by studies that assessed vertical-farming energy use and cost-effectiveness with simplified models, this paper isolates how individual input parameters drive efficiency, sustainability and economic viability using a detailed modelling framework with sensitivity and correlation analyses. It evaluates 162 scenarios combining three levels of temperature, photosynthetic photon flux density (PPFD) and CO2 concentration across the socio-environmentally distinct Trondheim, Shanghai and Dubai regions, at two insulation thicknesses. Because of HVAC and dehumidification, crop productivity stays optimal regardless of insulation or external climate. PPFD dominates growth (correlation 0.85), ahead of CO2 (0.36) and temperature (0.22), and also drives energy consumption (0.73). Lowest specific energy consumption coincides with lowest productivity (55 kg/m2), and the cheapest levelized cost of lettuce came at 24 degC, 250 umol/m2s PPFD, 1400 ppm CO2 with insulation (102 kg/m2). Only decarbonised energy systems can support vertical farming without raising CO2 emissions relative to imported lettuce.

Dr.M.K. Ganesh · International Journal for Multidimensional Research Perspectives · Global

This mixed-methods study examined the farm-to-table movement in restaurant food production, identifying benefits like enhanced food freshness and local economic support. However, it also found significant challenges including higher costs, seasonal variability, and complex supply chain logistics. Consumer perceptions were generally positive, but the study emphasized the need for increased consumer education and policy support to overcome barriers.

Ada Górna · Prace i Studia Geograficzne · Global

A study analyzed urban agriculture supply chains in Havana, Kigali, Bissau, and Singapore based on fieldwork conducted from 2018 to 2020. It found that while shortened supply chains are typical for urban agriculture, their benefits are not arbitrary and depend on local economic, social, and spatial conditions, as well as the supply chain's organization and structure. The positive effects of localized food production are not universal, indicating a need for further research into supply and value chain structures.

Hiran Roy, C. Michael Hall, Paul W. Ballantine · · Global

This excerpt is the introduction to a chapter on barriers facing hospitality businesses' use of local food; it covers only the background on rising North American and European consumer demand for local food, driven by desire for fresh food access, support for local farmers and communities, and concerns over trust, locality, transparency, animal welfare and food safety, alongside the post-1990s growth of farmers' markets, food box programs and community-supported agriculture. The specific economic barriers and constraints named in the chapter's title are not described within this excerpted text.

Brian Halweil · · Global

This book points out that the long-distance food system consumes staggering amounts of fuel, generates greenhouse gases, and compromises food security. Since 1961, the tonnage of food shipped between nations has grown fourfold, with food in the United States typically traveling 1,500 to 2,500 miles from farm to plate. While this system often runs roughshod over local cuisines, varieties, and agriculture, a local-foods movement is beginning to emerge globally.