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Title: Greenhouse gas emission factors associated with rewetting of organic soils
Authors: Wilson, D.
Blain, D.
Couwenberg, J.
Evans, C.
Murdiyarso, D.
Page, S. E.
Renou-Wilson, F.
Rieley, J.
Sirin, A.
Strack, M.
Tuittila, E.
First Published: 8-Apr-2016
Publisher: International Mire Conservation Group, International Peat Society
Citation: Mires and Peat, 2016 17(04), 1- 28.
Abstract: Greenhouse gas emission factors associated with rewetting of organic soils downloads: 390 | type: pdf | size: 507 kB Volume 17 (2016) Article 04 Greenhouse gas emission factors associated with rewetting of organic soils. by D. Wilson, D. Blain, J. Couwenberg, C.D. Evans, D. Murdiyarso, S.E. Page, F. Renou-Wilson, J.O. Rieley, A. Sirin, M. Strack and E.-S. Tuittila Published online: 08.04.2016 Summary Drained organic soils are a significant source of greenhouse gas (GHG) emissions to the atmosphere. Rewetting these soils may reduce GHG emissions and could also create suitable conditions for return of the carbon (C) sink function characteristic of undrained organic soils. In this article we expand on the work relating to rewetted organic soils that was carried out for the 2014 Intergovernmental Panel on Climate Change (IPCC) Wetlands Supplement. We describe the methods and scientific approach used to derive the Tier 1 emission factors (the rate of emission per unit of activity) for the full suite of GHG and waterborne C fluxes associated with rewetting of organic soils. We recorded a total of 352 GHG and waterborne annual flux data points from an extensive literature search and these were disaggregated by flux type (i.e. CO2, CH4, N2O and DOC), climate zone and nutrient status. Our results showed fundamental differences between the GHG dynamics of drained and rewetted organic soils and, based on the 100 year global warming potential of each gas, indicated that rewetting of drained organic soils leads to: net annual removals of CO2 in the majority of organic soil classes; an increase in annual CH4 emissions; a decrease in N2O and DOC losses; and a lowering of net GHG emissions. Data published since the Wetlands Supplement (n = 58) generally support our derivations. Significant data gaps exist, particularly with regard to tropical organic soils, DOC and N2O. We propose that the uncertainty associated with our derivations could be significantly reduced by the development of country specific emission factors that could in turn be disaggregated by factors such as vegetation composition, water table level, time since rewetting and previous land use history.
DOI Link: 10.19189/MaP.2016.OMB.222
ISSN: 1819-754X
Embargo on file until: 1-Jan-10000
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright is automatically assigned to IMCG and IPS on submission. Articles may be freely downloaded from the Journal's web site and printed by individuals for personal use. They may not be altered in any way, and they may not be offered for sale.
Description: Embargoed since journal does not allow redistribution.
Appears in Collections:Published Articles, Dept. of Geography

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