Brief description
This is Version 1 of the Australian Soil Clay product of the Soil and Landscape Grid of Australia.The Soil and Landscape Grid of Australia has produced a range of digital soil attribute products. Each product contains six digital soil attribute maps, and their upper and lower confidence limits, representing the soil attribute at six depths: 0-5cm, 5-15cm, 15-30cm, 30-60cm, 60-100cm and 100-200cm. These depths are consistent with the specifications of the GlobalSoilMap.net project (http://www.globalsoilmap.net/). The digital soil attribute maps are in raster format at a resolution of 3 arc sec (~90 x 90 m pixels).
These maps are generated by combining the best available Digital Soil Mapping (DSM) products available across Australia.
Attribute Definition: 2 μm mass fraction of the less than 2 mm soil material determined using the pipette method;
Units: %;
Period (temporal coverage; approximately): 1950-2013;
Spatial resolution: 3 arc seconds (approx 90m);
Total number of gridded maps for this attribute: 18;
Number of pixels with coverage per layer: 2007M (49200 * 40800);
Total size before compression: about 8GB;
Total size after compression: about 4GB;
Data license : Creative Commons Attribution 4.0 (CC BY);
Target data standard: GlobalSoilMap specifications;
Format: GeoTIFF.
Lineage
The National Soil Attribute Maps are generated by combining the best available digital soil mapping to calculate a variance weighted mean for each pixel. Two DSM methods have been utilised across and in various parts of Australia, these being:1) Decision trees with piecewise linear models with kriging of residuals developed from soil site data across Australia. (Viscarra Rossel et al., 2015a);
2) Disaggregation of existing polygon soil mapping using DSMART (Odgers et al. 2015a).
Version 1 of the National Digital Soil Property Maps combines mapping from the:
1) Australia-wide three-dimensional Digital Soil Property Maps;
2) Western Australia Polygon Disaggregation Maps;
3) South Australian Agricultural Areas Polygon Disaggregation Maps;
4) Tasmanian State-wide DSM Maps.
These individual mapping products are also available in the Data Access Portal. Please refer to these individual products for more detail on the DSM methods used.
Data time period: 1950-01-01 to 2013-12-31
Subjects
3-dimensional soil mapping |
Attributes |
Clay |
Continental |
DSM |
Digital Soil Mapping |
Environmental Sciences |
Global Soil Map |
Raster |
SLGA |
Soil Sciences |
Soil |
Soil Maps |
Soil Sciences Not Elsewhere Classified |
TERN |
TERN_Soils |
TERN_Soils_DSM |
spatial modelling |
spatial uncertainty |
visible-near infrared spectroscopy |
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Identifiers
- Local : 102.100.100/16110
- DOI : 10.4225/08/546EEE35164BF
