PFRP Atomic Planning Units

The PFRP Atomic Planning Units (APU) is an ESRI shapefile containing a wide range of derived data relevant to the PFRP. The APUs store data from a range of Primary data sources (3 vegetation, old growth forest, biophysical naturalness, priority flora and fauna, land tenure time series, PFRP properties, geology, riverine zones) to produce a wide range of Derived data fields for use in many facets of the work of the PFRP. All Primary data inputs are fully intersected such that every polgyon differs in at least one data attribute from each of its neighbours. The APUs are designed to accumulate data without losing data from previous versions, subject to minimum size thresholds for polygons. APU versions are numbered sequentially and by date (e.g. APU520_28Oct04.shp) and are backwards compatible with previous versions. The APU data is a developmental data set designed for multi-criteria assessment work from within a single data set, and as such has limitations on accuracy and reliability which may be less than the input data sets. A Microsoft Excel Workbook provides extended detail on major changes between versions, field definitions and type, keys to attributes within fields and parameters for application of logical consistency rules. The current version (at 23 November 2004) is APU520_28Oct04.shp, which comprises approximately 1.1 million polygons and database records.