Updating the Phase 1 habitat map of Wales, UK, using satellite sensor data

H...............H

Show simple item record

dc.contributor.author Lucas, Richard M.
dc.contributor.author Medcalf, Katie
dc.contributor.author Brown, Alan
dc.contributor.author Bunting, Peter J.
dc.contributor.author Breyer, Johanna
dc.contributor.author Clewley, Dan
dc.contributor.author Keyworth, Steve
dc.contributor.author Blackmore, Philippa
dc.date.accessioned 2011-05-10T15:37:58Z
dc.date.available 2011-05-10T15:37:58Z
dc.date.issued 2011-01
dc.identifier.citation Lucas , R M , Medcalf , K , Brown , A , Bunting , P J , Breyer , J , Clewley , D , Keyworth , S & Blackmore , P 2011 , ' Updating the Phase 1 habitat map of Wales, UK, using satellite sensor data ' ISPRS Journal of Photogrammetry and Remote Sensing , vol 66 , no. 1 , pp. 81-102 . en
dc.identifier.other PURE: 159425
dc.identifier.other dspace: 2160/6718
dc.identifier.uri http://hdl.handle.net/2160/6718
dc.description Richard Lucas, Katie Medcalf, Alan Brown, Peter Bunting, Johanna Breyer, Dan Clewley, Steve Keyworth, Philippa Blackmore (2011). Updating the Phase 1 habitat map of Wales, UK, using satellite sensor data. ISPRS Journal of Photogrammetry and Remote Sensing, 66 ( 1), January 2011, 81-102. Sponsorship: Countryside Council for Wales en
dc.description.abstract The Phase 1 Survey is the most comprehensive and widely used national level map of semi-natural habitats in Wales. However, the survey was based largely on field survey and was conducted over several decades, before being completed in 1997. Given that resources for a repeat survey were limited, this study has used an object-orientated rule-based classification implemented within eCognition of multi-temporal satellite sensor data acquired between 2003 and 2006 to map semi-natural habitats and agricultural land across Wales, thereby allowing a progressive update of the Phase 1 Survey. The classification of objects to Phase 1 habitat classes was undertaken in two steps; firstly the landscape of Wales was divided into objects using orthorectified SPOT-5 High Resolution Geometric (HRG) reflectance data (10 m spatial resolution) and Land Parcel Information System (LPIS) boundaries. A rule-base was then developed to progressively discriminate and map the distribution of 105 sub-habitats across Wales based on time-series of SPOT HRG, Terra-1 Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and Indian Remote Sensing Satellite (IRS) LISS-3 data, derived datasets (e.g., vegetation indices, fractional images) and ancillary information (e.g., topography). The rules coupled knowledge of ecology and the information content of these remote sensing data using a combination of thresholds, Boolean operations and fuzzy membership functions. A second rule-base was then developed to translate the more detailed sub-habitat classification to Phase 1 habitat classes. Indicative accuracies of the revised Phase 1 mapping, based on comparisons with the later Phase 2 survey (for selected habitats), were >80% overall and typically between 70% and 90% for many classes. Through this exercise, Wales has become the first country in Europe to produce a national map of habitats (as opposed to land cover) through object-orientated classification of satellite sensor data. Furthermore, the approach can be adapted to allow continual monitoring of the extent and condition of habitats and agricultural land. en
dc.format.extent 22 en
dc.language.iso eng
dc.relation.ispartof ISPRS Journal of Photogrammetry and Remote Sensing en
dc.subject Land cover en
dc.subject Habitat classification en
dc.subject Satellite en
dc.subject Wales en
dc.subject Object-oriented eCognition en
dc.title Updating the Phase 1 habitat map of Wales, UK, using satellite sensor data en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1016/j.isprsjprs.2010.09.004
dc.contributor.institution Institute of Geography & Earth Sciences en
dc.contributor.institution Quaternary Environmental Change Group en
dc.description.status Peer reviewed en


Files in this item

Files Size Format View

There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record

Search Cadair


Advanced Search

Browse

My Account