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Title: Consensus, uncertainties and challenges for perennial bioenergy crops and land use

Journal Article · · Global Change Biology. Bioenergy
DOI:https://doi.org/10.1111/gcbb.12488· OSTI ID:1511215
ORCiD logo [1];  [2];  [3];  [4];  [5];  [6];  [3];  [7];  [7];  [2];  [1]; ORCiD logo [8];  [9];  [1]
  1. Lancaster Environment Centre, Lancaster (United Kingdom)
  2. Colorado State Univ., Fort Collins, CO (United States)
  3. Univ. of Illinois, Urbana, IL (United States)
  4. Univ. of Sao Paulo, Piracicaba (Brazil)
  5. Univ. of Antwerp, Wilrijk (Belgium)
  6. Shell International Exploration and Production Inc., Houston, TX (United States)
  7. Aberystwyth Univ., Aberystwyth (United Kingdom)
  8. Univ. of Aberdeen, Aberdeen (United Kingdom)
  9. Univ. of Manchester, Manchester (United Kingdom)

Perennial bioenergy crops have significant potential to reduce greenhouse gas (GHG) emissions and contribute to climate change mitigation by substituting for fossil fuels; yet delivering significant GHG savings will require substantial land-use change, globally. Over the last decade, research has delivered improved understanding of the environmental benefits and risks of this transition to perennial bioenergy crops, addressing concerns that the impacts of land conversion to perennial bioenergy crops could result in increased rather than decreased GHG emissions. For policymakers to assess the most cost-effective and sustainable options for deployment and climate change mitigation, synthesis of these studies is needed to support evidence-based decision making. In 2015, a workshop was convened with researchers, policymakers and industry/business representatives from the UK, EU and internationally. Outcomes from global research on bioenergy land-use change were compared to identify areas of consensus, key uncertainties, and research priorities. Here, we discuss the strength of evidence for and against six consensus statements summarizing the effects of land-use change to perennial bioenergy crops on the cycling of carbon, nitrogen and water, in the context of the whole life-cycle of bioenergy produc-tion. Our analysis suggests that the direct impacts of dedicated perennial bioenergy crops on soil carbon and nitrous oxide are increasingly well understood and are often consistent with significant life cycle GHG mitiga-tion from bioenergy relative to conventional energy sources. We conclude that the GHG balance of perennial bioenergy crop cultivation will often be favourable, with maximum GHG savings achieved where crops are grown on soils with low carbon stocks and conservative nutrient application, accruing additional environmental benefits such as improved water quality. The analysis reported here demonstrates there is a mature and increasingly comprehensive evidence base on the environmental benefits and risks of bioenergy cultivation which can support the development of a sustainable bioenergy industry.

Research Organization:
South Dakota State Univ., Brookings, SD (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
FG36-08GO88073; 233366; EP/M013200/1; 2011-67009-30083; 2013-68005-21298
OSTI ID:
1511215
Journal Information:
Global Change Biology. Bioenergy, Vol. 10, Issue 3; ISSN 1757-1693
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 72 works
Citation information provided by
Web of Science

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Cited By (10)

Gene Expression and Physiological Differences in Neo-Octoploid Switchgrass Subjected to Drought Stress journal February 2020
Carbon emissions from cropland expansion in the United States journal April 2019
Measured and modelled effect of land‐use change from temperate grassland to Miscanthus on soil carbon stocks after 12 years journal May 2019
Soil N 2 O emissions with different reduced tillage methods during the establishment of Miscanthus in temperate grassland journal October 2018
A Framework for Tracing Social–Ecological Trajectories and Traps in Intensive Agricultural Landscapes journal May 2018
Switchgrass and Giant Miscanthus Biomass and Theoretical Ethanol Production from Reclaimed Mine Lands journal May 2018
Soil nitrous oxide flux following land-use reversion from Miscanthus and SRC willow to perennial ryegrass journal August 2018
Real‐time monitoring of greenhouse gas emissions with tall chambers reveals diurnal N 2 O variation and increased emissions of CO 2 and N 2 O from Miscanthus following compost addition journal October 2019
Greenhouse gas budget of a poplar bioenergy plantation in Belgium: CO 2 uptake outweighs CH 4 and N 2 O emissions journal October 2019
Potential trade-offs of employing perennial biomass crops for the bioeconomy in the EU by 2050: Impacts on agricultural markets in the EU and the world journal February 2019

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