Biodiversity Impact Assessment Considering Land Use Intensities and Fragmentation

Area of Science:

• Environmental Science
• Ecology
• Biodiversity Conservation

Background:

• Land use change is a primary driver of terrestrial biodiversity loss.
• Life cycle assessment (LCA) is a crucial tool for evaluating environmental impacts and informing decisions.
• Existing LCA methods require refinement to adequately address land use impacts on ecosystem quality.

Purpose of the Study:

• To develop novel characterization factors for land use impacts within the Global Guidance for Life Cycle Impact Assessment (GLAM) project.
• To integrate land use intensity and fragmentation into a unified LCA framework for biodiversity assessment.
• To provide updated data sets and practical guidance for applying these new factors.

Main Methods:

• Development of new characterization factors combining land use intensity and fragmentation.
• Inclusion of five species groups (plants, amphibians, birds, mammals, reptiles) and five land use types (cropland, pasture, plantations, managed forests, urban).
• Parametrization of the underlying model with updated data sets, applicable at ecoregion and country levels.

Main Results:

• New characterization factors are available for assessing land use impacts on regional and global species richness.
• The factors account for varying land use intensities (minimal, light, intense) and land use types.
• Updated data sets enhance the model's accuracy and applicability.

Conclusions:

• The developed characterization factors offer an improved approach to quantifying land use impacts on biodiversity within LCA.
• These factors support more informed environmental decision-making by providing a comprehensive assessment of land use threats.
• The study highlights the strengths of the new factors while acknowledging areas for future research and refinement.