Inclusion of soil erosion impacts in life cycle assessment on a global scale: application to energy crops in Spain

  • Montserrat Núñez
  • Assumpció Antón
  • Pere Muñoz
  • Joan Rieradevall
LAND USE IN LCA

Abstract

Purpose

Despite the fundamental role of ecosystem goods and services in sustaining human activities, there is no harmonized and internationally agreed method for including them in life cycle assessment (LCA). The main goal of this study was to develop a globally applicable and spatially resolved method for assessing land use impacts on the erosion regulation ecosystem service.

Methods

Soil erosion depends much on location. Thus, unlike conventional LCA, the endpoint method was regionalized at the grid cell level (5 arcmin, approximately 10 × 10 km2) to reflect the spatial conditions of the site. Spatially explicit characterization factors were not further aggregated at broader spatial scales.

Results and discussion

Life cycle inventory data of topsoil and topsoil organic carbon (SOC) losses were interpreted at the endpoint level in terms of the ultimate damage to soil resources and ecosystem quality. Human health damages were excluded from the assessment. The method was tested on a case study of five 3-year agricultural rotations, two of them with energy crops, grown in several locations in Spain. A large variation in soil and SOC losses was recorded in the inventory step, depending on climatic and edaphic conditions. The importance of using a spatially explicit model and characterization factors is shown in the case study.

Conclusions

The regionalized assessment takes into account the differences in soil erosion-related environmental impacts caused by the great variability of soils. Taking this regionalized framework as the starting point, further research should focus on testing the applicability of the method through the complete life cycle of a product and on determining an appropriate spatial scale at which to aggregate characterization factors in order to deal with data gaps on the location of processes, especially in the background system. Additional research should also focus on improving the reliability of the method by quantifying and, insofar as it is possible, reducing uncertainty.

Keywords

Ecosystem services Land use impacts Regionalized life cycle impact assessment Soil organic carbon Soil loss 

Supplementary material

11367_2012_525_MOESM1_ESM.docx (429 kb)
ESM 1(DOCX 423 kb)
11367_2012_525_MOESM2_ESM.rar (1.5 mb)
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11367_2012_525_MOESM3_ESM.rar (960 kb)
ESM 3(RAR 960 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Montserrat Núñez
    • 1
    • 2
  • Assumpció Antón
    • 1
    • 3
  • Pere Muñoz
    • 1
  • Joan Rieradevall
    • 4
    • 5
  1. 1.IRTA, SostenipraCabrilsSpain
  2. 2.INRA, UR050, Laboratoire de Biotechnologie de l’EnvironnementNarbonneFrance
  3. 3.Departament d’Enginyeria QuímicaUniversitat Rovira i Virgili (URV)TarragonaSpain
  4. 4.ICTA, Sostenipra, Institute of Environmental Science and Technology (ICTA)Universitat Autònoma de Barcelona (UAB)BellaterraSpain
  5. 5.Chemical Engineering DepartmentUniversitat Autònoma de Barcelona (UAB)BellaterraSpain

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