Short answer

When designing food production systems or products, a comprehensive life cycle assessment that includes transportation, energy inputs, and economic factors is essential for true sustainability, rather than focusing solely on localized production.

Field: Sustainability
Source: The International Journal of Life Cycle Assessment (2023)
Method: Hybrid Life Cycle Assessment (LCA) and economic analysis.
Evidence: Moderate effect

Organic farming in peri-urban areas, while potentially having a higher Global Warming Potential (GWP) in localized production, can be more sustainable overall than relying on imported produce due to reduced transportation emissions and economic benefits. This sustainability research insight is drawn from a 2023 study published in The International Journal of Life Cycle Assessment. Using Hybrid life cycle assessment (lca) and economic analysis., researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing food production systems or products, a comprehensive life cycle assessment that includes transportation, energy inputs, and economic factors is essential for true sustainability, rather than focusing solely on localized production.

Study

SustainabilityRecentModerate effect

Peri-urban organic horticulture offers a more sustainable alternative to imports, despite higher initial GWP.

The International Journal of Life Cycle Assessment · 2023

Key Findings

01The GWP for organic tomatoes and courgettes using a process-based LCA was 0.61 kg CO2-eq and 0.11 kg CO2-eq, respectively.
02Using a hybrid LCA approach, the GWP increased to 3.53 kg CO2-eq for tomatoes and 1.70 kg CO2-eq for courgettes.
03The GWP of case study tomatoes was 1.87 times higher than imported Spanish tomatoes when transportation was included.
04The marginal increase in prices for case study tomatoes and courgettes was significantly lower than market prices (4.6 and 5.15 times less, respectively).

Application

Design takeaway

How to apply

When designing a new food product or system, conduct a full LCA to compare different production methods and supply chains. Consider the trade-offs between local production and the energy/emissions associated with transportation of imported goods.

Project actions

01When evaluating a product's sustainability, don't just look at how it's made, but also how it gets to the consumer.
02Consider using a simplified LCA for your project to compare different design options.

Method & Evidence

AimTo assess the environmental and economic sustainability of peri-urban organic horticulture in the UK compared to imported produce.

MethodHybrid Life Cycle Assessment (LCA) and economic analysis.

ProcedureA farm-to-gate hybrid LCA was conducted for 1kg of organic tomatoes and courgettes grown in unheated polytunnels without supplementary lighting. Environmental data from the ecoinvent database was used in SimaPro software. Results were compared to a literature review of similar studies and a scenario including transportation of domestic and imported produce from Spain. Economic analysis compared production costs to market prices.

ContextPeri-urban organic horticulture in the United Kingdom.

Variables

IV["Production location (peri-urban UK vs. imported)","Transportation distance"]

DV["Global Warming Potential (GWP)","Economic cost/price increase"]

CV["Crop type (tomatoes, courgettes)","Farming method (organic, unheated polytunnel)","Functional unit (1kg produce)"]

Strengths & Limitations

Strengths

+Integrated environmental and economic assessment.
+Use of primary data from a case study farm.
+Comparison with literature and imported produce scenarios.

Limitations

Your own project might not have access to detailed LCA software or comprehensive environmental databases, so you may need to make estimations or focus on specific aspects of the life cycle.

Reliability & validity

The study's validity is strengthened by using established LCA software and databases, and by comparing results to existing literature. However, the reliance on a single case study farm and specific crops may limit generalizability, impacting external validity.

Think critically

How might the 'potential benefits' mentioned in the conclusion (employment, mental health, community cohesion) be integrated into a designer's decision-making process when evaluating the overall sustainability of a project?

Design Principles

"Holistic Life Cycle Assessment: Evaluate the environmental and economic impact of a product or system from raw material extraction to end-of-life, including transportation and distribution."

This insight is crucial for understanding the complex trade-offs in sustainable food production. It highlights that 'local' doesn't automatically mean 'sustainable' and that a holistic assessment, considering the entire life cycle, is necessary. Designers can use this to advocate for and develop systems that minimize environmental impact throughout the supply chain.

What This Means for Your Design

Growing food locally, even if it uses a bit more energy on the farm, can be better for the planet and your wallet than shipping food from far away, because shipping uses a lot of fuel.

How to use in your project

1.Use the concept of Life Cycle Assessment (LCA) to justify design choices that reduce environmental impact, such as minimizing transportation distances or energy consumption.
2.Compare the sustainability of different materials or manufacturing processes by considering their full life cycle impacts.

Add to My Project

Quick Cite

Paragraph starter

This research highlights that a comprehensive Life Cycle Assessment (LCA) is crucial for evaluating sustainability. While localized production may have a higher initial environmental impact (e.g., Global Warming Potential), the overall sustainability can be superior when considering reduced transportation emissions and economic benefits compared to imported alternatives. This underscores the importance of a systems-thinking approach in design, moving beyond single-stage assessments to encompass the entire product journey.

Source

The International Journal of Life Cycle Assessment

Sustainability assessment of peri-urban organic horticulture — A case study in the United Kingdom

journal · 2023

View source

Questions About This Research

What does the research say about peri-urban organic horticulture offers a more sustainable alternative to imports, despite higher initial gwp?: When designing food production systems or products, a comprehensive life cycle assessment that includes transportation, energy inputs, and economic factors is essential for true sustainability, rather than focusing solely on localized production. Evidence: The International Journal of Life Cycle Assessment (2023).
Why does "Peri-urban organic horticulture offers a more sustainable alternative to imports, despite higher initial GWP." matter for design?: This insight is crucial for understanding the complex trade-offs in sustainable food production. It highlights that 'local' doesn't automatically mean 'sustainable' and that a holistic assessment, considering the entire life cycle, is necessary. Designers can use this to advocate for and develop systems that minimize environmental impact throughout the supply chain.
How can designers apply this research?: When designing food production systems or products, a comprehensive life cycle assessment that includes transportation, energy inputs, and economic factors is essential for true sustainability, rather than focusing solely on localized production.
What were the main findings?: The GWP for organic tomatoes and courgettes using a process-based LCA was 0.61 kg CO2-eq and 0.11 kg CO2-eq, respectively.. Using a hybrid LCA approach, the GWP increased to 3.53 kg CO2-eq for tomatoes and 1.70 kg CO2-eq for courgettes.. The GWP of case study tomatoes was 1.87 times higher than imported Spanish tomatoes when transportation was included.. The marginal increase in prices for case study tomatoes and courgettes was significantly lower than market prices (4.6 and 5.15 times less, respectively).
What research method was used?: Hybrid Life Cycle Assessment (LCA) and economic analysis..
How strong is the evidence?: Evidence strength is rated Moderate effect, based on a 2023 journal from The International Journal of Life Cycle Assessment.
What should I do differently in my next project?: When designing a new food product or system, conduct a full LCA to compare different production methods and supply chains. Consider the trade-offs between local production and the energy/emissions associated with transportation of imported goods.
What are the limitations?: The study focused on a single farm in Sheffield and specific crops (tomatoes and courgettes). The hybrid LCA approach yielded higher GWP values than the process-based LCA, indicating sensitivity to methodology. Other potential benefits like employment and mental health were not quantitatively assessed.