This dataset (version 3.1) supersedes previous versions of the NSW Landscapes (Versions 2 & 3). Version 3.1 now includes an attributes for biometric over-cleared landscape status, and corrects minor typographic errors regarding some landscape names. The Biometric over-clear landscape value is a regulation data set established under the Environmental Outcomes Assessment Methodology (http://www.environment.nsw.gov.au/vegetation/eoam/) and is managed in the BioNet VIS Classification Database.

Background: Version 3 included a revision of the polygon boundaries conducted in 2008. That revision corrected many alignment errors using SPOT 5 imagery as a reference layer. The revisions for Version 3 resulted in significant alterations to Landscape boundaries in some regions. See associated technical report 'ELA 2008 Editing Mitchell Landscapes'.

Version 2 maps were constructed from existing data and have a strong geologic, geomorphic and pedologic base. They do not include field validation/original mapping. Scale and reliability was constrained to 1:250,000 scale by the availability of suitable state-wide maps, although some source data (air photos/maps) were more detailed. A transect of map sheets was compared with other data during the mapping, it is believed reasonable product consistency has been attained. Details on the methodology, limitations and constraints in the devlopment of the original dataset are contained in P.B.Mitchell (2002) NSW Ecosystems Study: Background and Methodology (Unpublished). Information regarding v3 update are contained in: ELA (2008). Editing Mitchell Landscapes.