Skip to main content
Article
Reducing the Negative Human-Health Impacts of Bioenergy Crop Emissions through Region-Specific Crop Selection
Environmental Research Letters
  • William Christian Porter, Massachusetts Institute of Technology
  • Todd N. Rosenstiel, Portland State University
  • Alex Guenther, Pacific Northwest National Laboratory
  • Jean-Francois Lamarque, National Center for Atmospheric Research
  • Kelley Barsanti, Portland State University
Document Type
Article
Publication Date
5-6-2015
Subjects
  • Climatic changes,
  • Bioenergetics
Abstract

An expected global increase in bioenergy-crop cultivation as an alternative to fossil fuels will have consequences on both global climate and local air quality through changes in biogenic emissions of volatile organic compounds (VOCs). While greenhouse gas emissions may be reduced through the substitution of next-generation bioenergy crops such as eucalyptus, giant reed, and switchgrass for fossil fuels, the choice of species has important ramifications for human health, potentially reducing the benefits of conversion due to increases in ozone (O3) and fine particulate matter (PM2.5) levels as a result of large changes in biogenic emissions. Using the Community Earth System Model we simulate the conversion of marginal and underutilized croplands worldwide to bioenergy crops under varying future anthropogenic emissions scenarios. A conservative global replacement using high VOCemitting crop profiles leads to modeled population-weighted O3 increases of 5–27 ppb in India, 1–9 ppb in China, and 1–6 ppb in the United States, with peak PM2.5 increases of up to 2 μg m−3 . We present a metric for the regional evaluation of candidate bioenergy crops, as well as results for the application of this metric to four representative emissions profiles using four replacement scales (10–100% maximum estimated available land). Finally, we assess the total health and climate impacts of biogenic emissions, finding that the negative consequences of using high-emitting crops could exceed 50% of the positive benefits of reduced fossil fuel emissions in value.

Description
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
DOI
10.1088/1748-9326/10/5/054004
Persistent Identifier
http://archives.pdx.edu/ds/psu/15460
Citation Information
Porter, W. C., Rosenstiel, T. N., Guenther, A., Lamarque, J. F., & Barsanti, K. (2015). Reducing the negative human-health impacts of bioenergy crop emissions through region-specific crop selection. Environmental Research Letters, 10(5), 054004.