Greenhouse gas (GHG) and biogenic volatile organic compound (bVOC) fluxes associated with land-use change to bioenergy crops

Drewer, Julia; Howard, David; McNamara, Niall. 2017 Greenhouse gas (GHG) and biogenic volatile organic compound (bVOC) fluxes associated with land-use change to bioenergy crops. In: Thornley, Patricia; Adams, Paul, (eds.) Greenhouse gas balances of bioenergy systems. London, Academic Press, 77-96.

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Greenhouse gases (GHGs) and biogenic volatile organic compounds (bVOCs) are released into the atmosphere by all ecosystems through natural processes. Man's activities tend to dominate in terms of scale of emissions, but the magnitude, timing, and location vary depending upon the organisms (including crops), physical environment (soil, hydrology, etc.), conditions (climate, season, etc.), and processes (respiration, photosynthesis, decay, management, etc.). How these emissions relate to bioenergy crops is essential in determining where they should be cultivated, which types to select, and how they are managed. Bioenergy crops are usually planted because the land manager sees an economic benefit to them and/or their organisation. However, trade-offs, usually non-financial, have to be made that can be seen as costs or benefits. The use of biomass to provide energy is commonly seen as a strategy to mitigate climate change and is even talked of as potentially being ‘carbon negative’. To make a full comparison between the different management options requires knowledge of the system prior to bioenergy planting and measures of impacts of the system in that location and beyond and across all components. In this chapter, we introduce the GHGs and bVOCs, detailing where they are generated, emitted, and absorbed by bioenergy crops; how they vary over different time frames and under different conditions; the overall balance of emissions to compare with other forms of land-use; how management can influence emissions; and finally the potential for future benefits from the production of bioenergy crop feedstocks. We also identify where the different gases are most important, the uncertainties, and where research is ongoing.

Item Type: Publication - Book Section
Digital Object Identifier (DOI):
UKCEH and CEH Sections/Science Areas: Atmospheric Chemistry and Effects (Science Area 2017-)
Soils and Land Use (Science Area 2017-)
UKCEH Fellows
ISBN: 9780081010365
Additional Keywords: bVOCs, nitrous oxide, methane, carbon dioxide
NORA Subject Terms: Ecology and Environment
Agriculture and Soil Science
Date made live: 07 Feb 2018 12:37 +0 (UTC)

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