6 October 2011 Mapping peatland disturbance in Ireland: an object oriented approach
Author Affiliations +
Abstract
Peatlands contain large amounts of soil organic carbon. In a pristine state they sequester atmospheric carbon dioxide (CO2), however, when they are disturbed they emit it. In Ireland peatlands are extensive and cover 20% of the national land area. They contain between 53% and 62% of the total national soil organic carbon. However, large areas of Irish peatlands have been disturbed by anthropogenic activity. This activity includes drainage, mechanical extraction and burning. These activities lead to the reduction of the resilience of the peatland to climate and environmental change and can lead to the increased vulnerability of the peatland carbon stock. In this research an object oriented approach is used to examine high resolution imagery of a raised bog in Ireland and to extract a map of disturbed peatlands. The object oriented approach is implemented in ArcGIS with high resolution Geoeye-1 satellite imagery. The main disturbance classes identified were rough grazing, pasture, molinia, coniferous forest, high bog, drained bog and scrub. The users accuracy for each individual class ranged from 66% to 92% and the overall accuracy assessment for the disturbance map 85%.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Connolly, N. M. Holden, "Mapping peatland disturbance in Ireland: an object oriented approach", Proc. SPIE 8174, Remote Sensing for Agriculture, Ecosystems, and Hydrology XIII, 81740G (6 October 2011); doi: 10.1117/12.898573; https://doi.org/10.1117/12.898573
PROCEEDINGS
9 PAGES


SHARE
Back to Top