Volume 18 (2016) Article 15

Area estimations of cultivated organic soils in Ireland: reducing GHG reporting uncertainties.

by J. Donlan, J. O’Dwyer and K.A. Byrne

Published online: 30.06.2016

Summary

Cultivated organic soils, which are a large source of CO₂ emissions, are of particular interest in the Republic of Ireland where peatlands cover 20 % of the landscape. For accurate accounting and national reporting of greenhouse gas (GHG) emissions, there is a need to calculate the total land area used for cultivation activity on drained organic soils. Peatlands (organic soils) in Ireland are also used for arable farming, which results in particularly high greenhouse gas emissions per unit area. However, the Irish National Inventory Report to the United Nations Framework Convention on Climate Change lacks mention of this type of land use. The actual area of organic soils under arable land use (cropland) in Ireland has, thus far, not been quantified. Here we provide a first estimate of the area of organic soil that is used for arable farming in Ireland. Through map overlay analysis using GIS in combination with probability sampling and ground truthing, we estimate the area of organic soils under arable cropping at 1,235 ha, which is considerably lower than the estimate of 3,688 ha based on map overlays alone. This research provides information to support improved accounting of organic soils under cultivation and may contribute to reducing uncertainty in national reporting of GHG emissions, thus providing a more reliable basis for strategies aimed at reducing GHG emissions in Ireland in the future.

Citation

Donlan, J., O’Dwyer, J. & Byrne, K.A. (2016): Area estimations of cultivated organic soils in Ireland: reducing GHG reporting uncertainties. Mires and Peat, 18(15), 1-8. (Online: http://www.mires-and-peat.net/pages/volumes/map18/map1815.php); 10.19189/MaP.2016.OMB.230

Reviewers

IMCG and IPS acknowledge the work of the reviewers.