| Dataset Number | 1043 |
| Dataset Title | Physical Condition of Soil |
| Custodian | Data Authority: Department for Environment and Water
Data Provider: Department for Environment and Water
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Description
| Description | Physical Condition of Soil dataset is an integration of Structure of Subsoil and Physical Condition of Surface Soil datasets. Soil structure in this context refers to the degree of resistance offered by the soil to root penetration and seedling emergenceSELECT 1 FROM DUAL;
to the free movement of air and waterSELECT 1 FROM DUAL;
and to the ease of cultivation and other surface management operations. It is therefore an integration of assessments of strength, aggregation and porosity. Surface soil condition in particular varies significantly across the landscape and is affected by management practice as well as by inherent properties of the soil. The assessment only indicates where soil structural problems could potentially be significant, and does not define specific occurrences of particular conditions. The purpose of this assessment is to identify potential soil structure limitations on arable land, by using four simplified categories: no significant problemsSELECT 1 FROM DUAL;
surface soil onlySELECT 1 FROM DUAL;
subsoil onlySELECT 1 FROM DUAL;
surface and subsoil. Each Soil Landscape Map Unit is categorised INTO seven (plus not applicable) legend categories according to its most limiting soil physical condition, provided that it occupies at least 30% of the map unit. Subsoil structure limitations of moderate, high and very high define 'poor subsoil structure' in this assessment. Land which is non arable due to one or more of waterlogging, salinity, rockiness or steepness is not considered. There is no analysis data associated with this attribute. |
| Usage | Link to Soil Attribute Descriptions. This dataset has been derived from the Soil Landscape Map Units spatial dataset to be used for map creation or the calculation of spatial data statistics. Used to supply Government, community groups, industry and the general public with up to date regional, subregional and catchment level land and soil attribute information for southern South Australia. The aim is to produce maps, statistics and reports displaying and describing: Land and soil attributes within southern South AustraliaSELECT 1 FROM DUAL;
Land surface features affecting land use, land management and productivitySELECT 1 FROM DUAL;
Limitations / suitability of land and soil for a range of agricultural and other uses. Independent professional advice should be sought before using this in commercial decisions. Further information: soil and land attributes. Physical Condition of Soil dataset can be viewed on NatureMaps (>Soils>Soil Physical Condition Attributes). Spatial data downloads are available from Data SA. |
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Data Quality
| Lineage | The dataset is based on an interpretation of 1:40,000 stereo colour aerial photography and limited field inspection of landscapes and soils by soil scientists. Soil Landscape Map Unit boundaries were determined after an integration of field observations and recordingsSELECT 1 FROM DUAL;
laboratory analysesSELECT 1 FROM DUAL;
stereoscopic examination of aerial photographsSELECT 1 FROM DUAL;
understanding of regional landscape processes and stratigraphySELECT 1 FROM DUAL;
existing soil and geological mapping data. To avoid inconsistencies and confusion, any updates to the Soil and Land Attribute mapping are to be managed by DEWNR Soil and Land Program. This data has been released under a Creative Commons licence. Where products are derived from this data, DEWNR are to be acknowledged, and any changes to the original data should be indicated. |
| Completeness | Complete. The spatial data is subject to amendment as and when more data become available. |
| Positional Accuracy | The accuracy is to the scale of mapping (50 metres at 1:50,000 and 300 metres at 1:100,000 mapping scale). The spatial data is to be used at the regional, subregional and catchment level, and can be used to provide property overviewsSELECT 1 FROM DUAL;
however, cannot be used at the paddock level. South East, Kangaroo Island, Mount Lofty Ranges and the 'bottom' of Yorke Peninsula have been mapped at 1:50,000. Eyre Peninsula, the main part of Yorke Peninsula, Murray Mallee and Northern Agricultural Districts have been mapped at 1:100,000. Map unit boundaries should be treated as transition zones. |
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Geographic Extent
| Extent Name | Agricultural Region - South Australia |
| Min Easting or Longitude | 132.25 |
| Min Northing or Latitude | -38 |
| Max Easting or Longitude | 141 |
| Max Northing or Latitude | -32.25 |
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Dataset Status
| Initially Acquired | 01-JAN-2000 |
| Last Updated | 01-JUL-2009 |
| Update Frequency | As required |
| Maintenance Method | As required |
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| AusGOAL | CC BY (Attribution) |
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