Journal
GLOBAL CHANGE BIOLOGY BIOENERGY
Volume 9, Issue 12, Pages 1721-1735Publisher
WILEY
DOI: 10.1111/gcbb.12456
Keywords
biomass; biofuels; food security; GCLUC model; Global Calculator; system dynamics
Funding
- DOE [DE-AC36-08GO28308]
- Imperial College Library
- Giorgio Ruffolo Fellowship Program at Harvard University
- EPSRC [EP/K036734/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K036734/1] Funding Source: researchfish
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Across energy, agricultural and forestry landscapes, the production of biomass for energy has emerged as a controversial driver of land-use change. We present a novel, simple methodology, to probe the potential global sustainability limits of bioenergy over time for energy provision and climate change mitigation using a complex-systems approach for assessing land-use dynamics. Primary biomass that could provide between 70EJyear(-1) and 360EJyear(-1), globally, by 2050 was simulated in the context of different land-use futures, food diet patterns and climate change mitigation efforts. Our simulations also show ranges of potential greenhouse gas emissions for agriculture, forestry and other land uses by 2050, including not only above-ground biomass-related emissions, but also from changes in soil carbon, from as high as 24 GtCO(2)eq year(-1) to as low as minus 21 GtCO(2)eq year(-1), which would represent a significant source of negative emissions. Based on the modelling simulations, the discussions offer novel insights about bioenergy as part of a broader integrated system. Whilst there are sustainability limits to the scale of bioenergy provision, they are dynamic over time, being responsive to land management options deployed worldwide.
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