Surface Rockiness

Dataset Number1058
Dataset TitleSurface Rockiness
CustodianData Authority: Department for Environment and Water
Data Provider: Department for Environment and Water

Description

DescriptionSurface rockiness refers to loose surface rocks, stones, and rocky outcrops. No attempt is made to distinguish between different types or sizes of rocks. Landscapes are assessed only by visual estimates of the land surface, describing rockiness in terms of management implications. Eight Surface Rockiness analysis data classes (including not applicable) have been supplied, as percentage values of Soil Landscape Map Units to be used for the calculation of spatial data statistics. Note: the sum of all percentage values for each map unit totals 100%. Soil Landscape Map Units are categorised INTO seven (plus not applicable) legend categories according to the overall amount of surface stone and outcropping rock. Where rockiness in not uniformly distributed across the map unit (eg a complex of sandhills and stony flats), an estimate based on proportions is made.
UsageLink 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. Surface Rockiness dataset can be viewed on NatureMaps (>Soils>Soil Surface Attributes). Spatial data downloads are available from Data SA.

Data Quality

LineageThe 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.
CompletenessComplete. The spatial data is subject to amendment as and when more data become available.
Positional AccuracyThe 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.

Geographic Extent

Extent NameAgricultural Region - South Australia
Min Easting or Longitude132.25
Min Northing or Latitude-38
Max Easting or Longitude141
Max Northing or Latitude-32.25

Dataset Status

Initially Acquired01-JAN-2000
Last Updated01-JUL-2009
Update FrequencyAs required
Maintenance MethodAs required
LicenseingCC BY (Attribution)

Attributes

TableNameField AliasData TypeDescription
Landscape.SALAD_RockinessLANSLU CharacterSoil Landscape Map Unit.
Landscape.SALAD_RockinessROCKINESS CharacterDegree of surface rockiness (Legend category. See layer file for descriptions).
Landscape.SALAD_RockinessR1 NumberPercentage of map unit with nil to minor surface stone.
Landscape.SALAD_RockinessR2 NumberPercentage of map unit with sufficient stones or rocks to interfere with tillage, but picking or rolling is not necessary for most uses.
Landscape.SALAD_RockinessR3 NumberPercentage of map unit with sufficient stones to necessitate picking or rolling for cultivationSELECT 1 FROM DUAL; or less than 10% rock outcrop, concentrated in reefs.
Landscape.SALAD_RockinessR4 NumberPercentage of map unit with between 10% and 50% rock outcrop concentrated in reefs, allowing cultivation in between.
Landscape.SALAD_RockinessR5 NumberPercentage of map unit which is too stony or rocky for cropping, but some pasture improvement possible, using standard equipment.
Landscape.SALAD_RockinessR6 NumberPercentage of map unit which is too rocky for machinery access.
Landscape.SALAD_RockinessR8 NumberPercentage of map unit which has rock pavements and rock faces.
Landscape.SALAD_RockinessRX NumberPercentage of map unit which is not applicable.

Contact Information

OrganisationDepartment for Environment and Water
Science Monitoring and Knowledge
Postal AddressGPO Box 1047

ADELAIDE
5001
EmailDEWNR.CustomerServiceCentre@sa.gov.au