Life cycle assessment of Colombian greenhouse tomato production based on farmer-level survey data
Data
2014Autor
Bojacá, Carlos Ricardo
Wyckhuys, Kris A.G.
Schrevens, Eddie
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Resumo
In Colombia, greenhouse tomato production systems are thought to cause considerable environmental
impact. In this study, we employ life cycle assessment to assess the environmental impact of tomato
production in a key growing area, the Alto Ricaurte province. A regional farmer survey (n ¼ 117) was the
primary data source, while secondary data for background processes were based on Ecoinvent v. 2.0 and
LCAFoods databases. An uncertainty analysis for the primary data source was carried out considering the
high variability in local management practices. All resources consumption and emissions were allocated
to a functional unit of one ton of tomatoes, restricting the boundaries of the system from raw material
extraction up to the farm gate. We applied the CML2001 v.2.05 impact assessment method including 10
midpoint categories. The production system consisted of six stages: nursery, infrastructure, machinery,
fertilization, pest management and waste management. At the inventory level, results exhibited a high
dispersion indicating the wide range of products and doses applied by growers, especially for the
fertilization and pest management stages. Overall, the infrastructure stage had the largest burden for
most impact categories. The fertilization stage was the second highest burden for abiotic depletion,
acidification and eutrophication potentials. The waste management stage was the main contributor to
the overall impact for freshwater and marine aquatic ecotoxicity potentials. The impacts for each stage
were largely determined by the production of agricultural inputs. Uncertainty analysis showed positive
skewed distributions, with a few growers extending the tail towards the highest environmental impact
side. The main stages contributing to the uncertainty on the outcome were the fertilization, pest management
and waste stages.
Palabras clave
Protected cultivation; Environmental assessment; Farming systems; Uncertainty analysis; Farmer surveyLink para o recurso
http://dx.doi.org/10.1016/j.jclepro.2014.01.078Collections
- Año 2014 [107]
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