Wind Erosion Potential

Dataset Number1050
Dataset TitleWind Erosion Potential
CustodianData Authority: Department for Environment and Water
Data Provider: Department for Environment and Water

Description

DescriptionWind Erosion Potential indicates where wind erosion could be a problem under particular soil disturbance and weather conditions (not where wind erosion has been or is currently a problem). The assessment is based on inherent soil and land characteristics such as surface texture, thickness of erodible soil material and topographic features, as well as average annual rainfall (on the basis that higher rainfall areas can generally provide more ground cover). Vegetation and other protective cover occurring at the time of assessment are ignored as these can vary significantly over time, including loss due to bushfire. Erosion potential can vary greatly within a map unit and much of the wind erosion prone land in SA occurs in complex landscapes of susceptible sandhills and more stable flats. Seven Wind Erosion Potential attribute (or 'analysis data') classes have been supplied (see 'A1', 'A2', etc in table below, including not applicable) as percentage (areal extent) values of each Soil Landscape Map Unit. Note: the sum of all percentage values for each map unit totals 100%. This analysis data is to be used for the calculation of spatial data statistics. For map display purposes, Soil Landscape Map Units have been categorised to (i) highlight the most limiting Wind Erosion Potential class, provided this occupies at least 30% of the area; and (ii) account for variability in remaining subdominant classes. This system produces 17 map legend categories (EROS_WIND), including not applicable. However for NatureMaps, legend categories have been simplified to only show the most limiting Wind Erosion Potential class(es), provided they occupy at least 30% of each map unit; together with one additional category highlighting limited occurrences (10-30% of map unit area) of moderately high to extreme Wind Erosion Potential. This simplified map displays only seven legend category groups (including not applicable).
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 Australia; Land surface features affecting land use, land management and productivity; 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. Wind Erosion Potential dataset can be viewed on NatureMaps (>Soils>Soil Erosion 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 recordings; laboratory analyses; stereoscopic examination of aerial photographs; understanding of regional landscape processes and stratigraphy; 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 overviews; 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
AusGOALCC BY (Attribution)

Attributes

TableNameField AliasData TypeDescription
Landscape.SALAD_Erosion_WindLANSLU textSoil Landscape Map Unit.
Landscape.SALAD_Erosion_WindEROS_WIND textMOST LIMITING / SUBDOMINANT Wind Erosion Potential (Legend category. See layer file for descriptions). The 16 classes account for the degree of the most limiting wind erosion potential class (provided it occupies at least 30% of each map unit) and the variability of potential within map units.
Landscape.SALAD_Erosion_WindA1 NumberPercentage of map unit with low wind erosion potential (wind erosion should not be a significant problem).
Landscape.SALAD_Erosion_WindA2 NumberPercentage of map unit with moderately low wind erosion potential (adoption of more conservative tillage practices should minimise erosion).
Landscape.SALAD_Erosion_WindA3 NumberPercentage of map unit with moderate wind erosion potential (reduced tillage, early sowing, modified rotations etc needed to minimise erosion).
Landscape.SALAD_Erosion_WindA4 NumberPercentage of map unit with moderately high wind erosion potential (specialised crops (eg cereal rye) and well managed pasture phases needed).
Landscape.SALAD_Erosion_WindA5 NumberPercentage of map unit with high wind erosion potential (land is non arable, careful grazing management essential).
Landscape.SALAD_Erosion_WindA7 NumberPercentage of map unit with extreme wind erosion potential (land should not be used for cropping or grazing).
Landscape.SALAD_Erosion_WindAX 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