- Title
- A digital soil map of Victoria-VicDSMv1
- Creator
- Hopley, J.; Rees, David; MaEwan, Richard; Clark, R.; Benke, Kurt; Imhof, Mark; Robinson, Nathan; Bardos, David
- Date
- 2014
- Type
- Text; Conference paper
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/54042
- Identifier
- vital:5745
- Identifier
- ISBN:9781138001190 (ISBN)
- Abstract
- This paper describes the production of the first version of a digital soil map for Victoria (VicDSMv1) which has combined existing soil point and polygon data. Four soil properties: pH, EC (electrical conductivity), clay percentage and Soil Organic Carbon (SOC) at the 6 depths specified by GlobalSoilMap.net have been mapped. The mapping has utilised data from 5,233 legacy sites collated from soil and land surveys conducted across Victoria since the 1930s and stored in the Victorian Soil Information System (VSIS). These sites were prepared by allocating property values to each of the 6 depths using equal area splines or depth weighted values. A land unit map for Victoria was derived from an overlay of map units from 32 surveys mapped at 100,000 scale or better. A dominant soil type at Suborder level in the Australian Soil Classification system (ASC) was assigned to each land unit. For each polygon a hierarchical grouping of sites from the VSIS was created using soil classification and location in relation to the polygon. A set of statistics for each soil property value at each set depth were calculated from the best available site cluster for each polygon. Metadata relating to property calculations have been collected. Creation of the VicDSMv1 has involved the preparation and entry of a large volume of legacy soil information into the VSIS. Consultation with current and retired soil surveyors during the process has enabled valuable expert knowledge to be captured into digital soil mapping. © 2014 Taylor & Francis Group, London, UK.
- Publisher
- France Taylor and Francis
- Relation
- GlobalSoilMap: Basis of the Global Spatial Soil Information System - Proceedings of the 1st GlobalSoilMap Conference p. 185-189
- Rights
- This metadata is freely available under a CCO license
- Subject
- Digital soil mappings; Electrical conductivity; Equal-area splines; Expert knowledge; Hierarchical groupings; Soil classification; Soil information system; Soil organic carbon
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