Tasmania was separated into seven regions for the purposes of land system mapping for the period 1978-1989. Non-unique land systems were developed based on six descriptor classes (geological period, geological rock type, rainfall, vegetation, elevation, and differences in dominant soils. Within each land system, land components are described which present examples of soil and vegetation variation across topographic sequences (proportion estimates, but unmapped boundaries). Land Systems are considered to have a nominal scale of 1:100 000. Regions were mapped separately (as below), and amalgamated to form a digital statewide coverage: Land Systems of Tasmania Region 1: King Island. Land Systems of Tasmania Region 2: Flinders Island. Land Systems of Tasmania Region 3: North. Land Systems of Tasmania Region 4: North East Land Systems Survey of Tasmania Region 5: Central Plateau. Land Systems Surveys of Tasmania Region 6: South, East and Midlands Land Systems of Tasmania Region 7: South West.

Analysis involved 1:42000 aerial photograph interpretation for soil, vegetation and topography, along with use of existing soil and geological maps. Based on field sites (approximately 2800) recording soil and vegetation descriptions. The result of this analysis are provided in individual land system descriptions. Refer here: https://nrmdatalibrary.dpipwe.tas.gov.au/FactSheets/WfW/LandSystems/

Positional Accuracy: not known Attribute Accuracy: not known Logical Consistency: All linework and polygon numbers checked with Arcinfo to ensure no overlapping, all lines intersect at nodes, no dangles, no duplication of numbers.