Researchers from across Australia have joined together to develop the most detailed digital soil maps of the country’s soil and landscape attributes. The Soil and Landscape Grid of Australia provides relevant, consistent, comprehensive data in an easily-accessible format.
Each soil attribute product is a collection of rasters made up of 6 depth slices, each with an upper and lower uncertainty limit associated with it. The maps are generated using novel spatial modelling and digital soil mapping (DSM) techniques to produce a fine resolution 3 arc-second grid of soil attribute values and their uncertainties, across all of Australia. The data is consistent with the specifications of the GlobalSoilMap and is managed as part of the Australian Soil Resource Information System (ASRIS).
The data displayed here as Web Mapping Services (WMS) can be downloaded as GIS raster layers from the CSIRO Data Access Portal or from Soil and Landscape Grid of Australia web site
The Soil and Landscape Grid of Australia Facility has also produced a comprehensive fine-resolution grid of important land surface parameters. There are 16 landscape attribute products available.
The Soil and Landscape Grid of Australia National Soil Attribute Maps are generated by combining Digital Soil Mapping (DSM) products available across Australia that increase the evidence base for the final maps. The maps are combined by calculating a variance weighted mean for each pixel. Two Digital Soil Mapping (DSM) methods have been utilised across and in various parts of Australia in the production of the maps, these being;
Version 1 of the National Soil Attribute Maps combines mapping from the
Bulk Density of the whole soil (including coarse fragments) in mass per unit volume by a method equivalent to the core method using a pedotransfer function
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A detailed data description can be viewed on the CSIRO Data Access Portal
Mass fraction of carbon by weight in the less than 2 mm soil material as determined by dry combustion at 900° C
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A detailed data description can be viewed on the CSIRO Data Access Portal
less than 2 um mass fraction of the less than 2 mm soil material determined using the pipette method
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A detailed data description can be viewed on the CSIRO Data Access Portal
2-20 um mass fraction of the less than 2 mm soil material determined using the pipette method
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A detailed data description can be viewed on the CSIRO Data Access Portal
20 um - 2 mm mass fraction of the less than 2 mm soil material determined using the pipette method
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A detailed data description can be viewed on the CSIRO Data Access Portal
pH of 1:5 soil/0.01M calcium chloride extract
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A detailed data description can be viewed on the CSIRO Data Access Portal
Available water capacity computed for each of the specified depth increments. Weight of the potential water storage in each layer (Gravimetric) as a percentage
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A detailed data description can be viewed on the CSIRO Data Access Portal
Total nitrogen in the soil
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A detailed data description can be viewed on the CSIRO Data Access Portal
Total phosphorous in the soil
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A detailed data description can be viewed on the CSIRO Data Access Portal
Cations extracted using Barium Chloride (BaCl2) plus exchangeable H + Al
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A detailed data description can be viewed on the CSIRO Data Access Portal
Depth to hard rock. Depth is inclusive of all regolith.
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A detailed data description can be viewed on the CSIRO Data Access Portal
Depth of soil profile (A & B horizons)
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A detailed data description can be viewed on the CSIRO Data Access Portal
These maps cover all of Australia.
The continent wide maps developed using piecewise linear regression from a collation of all Australian soil site data with environmental covariates (eg. terrain, climate, geophysics) are refered to as the Australia-wide Three-dimensional Digital Soil Attribute Maps.
]]>Bulk Density of the whole soil (including coarse fragments) in mass per unit volume by a method equivalent to the core method using a pedotransfer function
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
less than 2 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
2-20 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
20 um - 2 mm mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
pH of 1:5 soil/0.01M calcium chloride extract
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Available water capacity computed for each of the specified depth increments. Weight of the potential water storage in each layer (Gravimetric) as a percentage
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Total nitrogen in the soil
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A detailed data description can be viewed on the CSIRO Data Access Portal
Total phosphorous in the soil
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Cations extracted using Barium Chloride (BaCl2) plus exchangeable H + Al
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
These maps cover those areas of Western Australia with good quality contiguous polygon mapping.
Regional maps have been produced for parts of South Australia, for Western Australia, and for Tasmania utilising local data and resources. In Western Australia and South Australia a polygon map unit disagregation modelling technique called DSMART was used.
In these regions the models are based on the best available, contiguous and correlated soil polygon information.
These soil attribute maps for Western Australia, South Australia and Tasmania are collectively referred to as Regional Maps
]]>Bulk Density of the whole soil (including coarse fragments) in mass per unit volume by a method equivalent to the core method using a pedotransfer function
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Bulk Density of the fine earth in mass per unit volume by a method equivalent to the core method using a pedotransfer function
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
less than 2 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
2-20 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
20 um - 2 mm mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
1:5 soil water
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A detailed data description can be viewed on the CSIRO Data Access Portal
Available water capacity computed for each of the specified depth increments. Potential water storage in each layer (Volumetric) as a percentage
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A detailed data description can be viewed on the CSIRO Data Access Portal
mass fraction of the soil material > 2 mm
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A detailed data description can be viewed on the CSIRO Data Access Portal
These maps cover the cropping zones of South Australia.
Regional maps have been produced for parts of South Australia, for Western Australia, and for Tasmania utilising local data and resources. In Western Australia and South Australia a polygon map unit disagregation modelling technique called DSMART was used.
In these regions the models are based on the best available, contiguous and correlated soil polygon information.
These soil attribute maps for Western Australia, South Australia and Tasmania are collectively referred to as Regional Maps
]]>Bulk Density of the whole soil (including coarse fragments) in mass per unit volume by a method equivalent to the core method using a pedotransfer function
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Mass fraction of carbon by weight in the less than 2 mm soil material as determined by dry combustion at 900° C
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
less than 2 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
2-20 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
20 um - 2 mm mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
pH of 1:5 soil/0.01M calcium chloride extract
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Available water capacity computed for each of the specified depth increments. Weight of the potential water storage in each layer (Gravimetric) as a percentage
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Cations extracted using Barium Chloride (BaCl2) plus exchangeable H + Al
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
mass fraction of the soil material > 2 mm
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
These maps cover all of Tasmania.
Regional maps have been produced for parts of South Australia, for Western Australia, and for Tasmania utilising local data and resources. In Western Australia and South Australia a polygon map unit disagregation modelling technique called DSMART was used.
In these regions the models are based on the best available, contiguous and correlated soil polygon information. In Tasmania the soil attributes were modelled using decision trees with piecewise linear models utilising local scale input data.
These soil attribute maps for Western Australia, South Australia and Tasmania are collectively referred to as Regional Maps.
]]>Bulk Density of the whole soil (including coarse fragments) in mass per unit volume by a method equivalent to the core method using a pedotransfer function
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
Mass fraction of carbon by weight in the less than 2 mm soil material as determined by dry combustion at 900° C
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
less than 2 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
2-20 um mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
20 um - 2 mm mass fraction of the less than 2 mm soil material determined using the pipette method
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
1:5 soil water
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A detailed data description can be viewed on the CSIRO Data Access Portal
Electrical conductivity in saturated paste
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A detailed data description can be viewed on the CSIRO Data Access Portal
Electrical conductivity in 1:5 water
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A detailed data description can be viewed on the CSIRO Data Access Portal
The landscape attribute products available from the Soil and Landscape Grid of Australia were derived from DEM-S, the smoothed version of the national 1 second resolution Digital Elevation Model, which was derived from the 1 second resolution Shuttle Radar Topography Mission (SRTM) data acquired by NASA in February 2000.
]]>Slope measures the inclination of the land surface from the horizontal.
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A detailed data description can be viewed on the CSIRO Data Access Portal
Slope relief landform pattern classification based on Speight (2009).
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A detailed data description can be viewed on the CSIRO Data Access Portal
Aspect measures the direction in which a land surface slope faces. The direction is expressed in degrees from north.
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A detailed data description can be viewed on the CSIRO Data Access Portal
The elevation range measures the full range of elevations within a circular window and can be used as a representation of local relief. The 1000 m elevation range product was derived from the Smoothed Digital Elevation Model (DEM-S; ANZCW0703014016), which was derived from the 1 second resolution SRTM data acquired by NASA in February 2000.
Legend:
A detailed data description can be viewed on the CSIRO Data Access Portal
The elevation range measures the full range of elevations within a circular window and can be used as a representation of local relief. The 300 m elevation range product was derived from the Smoothed Digital Elevation Model (DEM-S; ANZCW0703014016), which was derived from the 1 second resolution SRTM data acquired by NASA in February 2000.
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A detailed data description can be viewed on the CSIRO Data Access Portal
TWI is calculated as log_e(specific catchment area / slope) and estimates the relative wetness within a catchment.
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A detailed data description can be viewed on the CSIRO Data Access Portal
Topographic Position Index (TPI) is a topographic position classification identifying upper, middle and lower parts of the landscape.
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A detailed data description can be viewed on the CSIRO Data Access Portal
Contributing area in m2 computed using multiple flow directions on hillslopes and ANUDEM-derived flow directions in channels.
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A detailed data description can be viewed on the CSIRO Data Access Portal
MrVBF is a topographic index designed to identify areas of deposited material at a range of scales based on the observations that valley bottoms are low and flat relative to their surroundings and that large valley bottoms are flatter than smaller ones.
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A detailed data description can be viewed on the CSIRO Data Access Portal
Plan (or contour) curvature is the rate of change of aspect (orthogonal to the slope) and represents topographic convergence or divergence.
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A detailed data description can be viewed on the CSIRO Data Access Portal
Profile curvature is the rate of change of potential gradient down a flow line and represents the changes in flow velocity down a slope.
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A detailed data description can be viewed on the CSIRO Data Access Portal
The Prescott Index is a measure of water balance that has proven to be a useful in soil mapping both to stratify study areas for sampling and as a quantitative predictor of soil properties (Prescott, 1949; McKenzie et al, 2000). The index was designed to give an indication of the intensity of leaching by excess water and is calculated using long-term average precipitation P and potential evaporation E, both expressed as mean monthly values in mm (mean annual values divided by 12): PI = 0.445P / E^0.75
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A detailed data description can be viewed on the CSIRO Data Access Portal
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A detailed data description can be viewed on the CSIRO Data Access Portal
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A detailed data description can be viewed on the CSIRO Data Access Portal
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A detailed data description can be viewed on the CSIRO Data Access Portal
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A detailed data description can be viewed on the CSIRO Data Access Portal