Conference and workshop on modelling global land use implications in the environmental assessment of biofuels

  • Jesper Kløverpris
  • Henrik Wenzel
  • Martin Banse
  • Llorenç Milà i Canals
  • Anette Reenberg
Global Land Use Implications Of Biofuels: State-of-the-Art

DOI: 10.1065/lca2008.03.381

Cite this article as:
Kløverpris, J., Wenzel, H., Banse, M. et al. Int J Life Cycle Assess (2008) 13: 178. doi:10.1065/lca2008.03.381

Abstract

Background, Aims and Scope

On 4–5 June 2007, an international conference was held in Copenhagen. It provided an interdisciplinary forum where economists and geographers met with LCA experts to discuss the challenges of modelling the ultimate land use changes caused by an increased demand for biofuels.

Main Features

The main feature of the conference was the cross-breeding of experience from the different approaches to land use modelling: The field of LCA could especially benefit from economic modelling in the identification of marginal crop production and the resulting expansion of the global agricultural area. Furthermore, the field of geography offers insights in the complexity behind new land cultivation and practical examples of where this is seen to occur on a regional scale.

Results

Results presented at the conference showed that the magnitude and location of land use changes caused by biofuels demand depend on where the demand arises. For instance, mandatory blending in the EU will increase land use both within and outside of Europe, especially in South America. A key learning for the LCA society was that the response to a change in demand for a given crop is not presented by a single crop supplier or a single country, but rather by responses from a variety of suppliers of several different crops in several countries.

Discussion

The intensification potential of current and future crop and biomass production was widely discussed. It was generally agreed that some parts of the third world hold large potentials for intensification, which are not realised due to a number of barriers resulting in so-called yield gaps.

Conclusions

Modelling the global land use implications of biofuels requires an interdisciplinary approach optimally integrating economic, geographical, biophysical, social and possibly other aspects in the modelling. This interdisciplinary approach is necessary but also difficult due to different perspectives and mindsets in the different disciplines.

Recommendations and Perspectives

The concept of a location dependent marginal land use composite should be introduced in LCA of biofuels and it should be acknowledged that the typical LCA assumption of linear substitution is not necessarily valid. Moreover, fertiliser restrictions/accessibility should be included in land use modelling and the relation between crop demand and intensification should be further explored. In addition, environmental impacts of land use intensification should be included in LCA, the powerful concept of land use curves should be further improved, and so should the modelling of diminishing returns in crop production.

Keywords

Biofuels increased demand economic modelling expansion geography land use changes LCA 

Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Jesper Kløverpris
    • 1
    • 2
  • Henrik Wenzel
    • 3
  • Martin Banse
    • 4
  • Llorenç Milà i Canals
    • 5
  • Anette Reenberg
    • 7
  1. 1.Department of Management Engineering, Section for Innovation and SustainabilityTechnical University of DenmarkLyngbyDenmark
  2. 2.Novozymes A/S, Sustainability DevelopmentBagsværdDenmark
  3. 3.Institute of Chemical Engineering, Biotechnology and Environmental TechnologyUniversity of Southern DenmarkOdense MDenmark
  4. 4.Agricultural Economics Research Institute LEI — Wageningen URThe HagueThe Netherlands
  5. 5.Centre for Environmental StrategyUniversity of Surrey (D3)Guildford, SurreyUK
  6. 6.Unilever — Safety & Environmental Assurance CentreSharnbrook, BedfordshireUK
  7. 7.Department of Geography and Geology, University of CopenhagenUniversity of CopenhagenCopenhagenDenmark