Metadata : Land Units of Walhallow Station, Northern Territory.
Name:AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile
Date Metadata Extracted:2023-12-12
Date Metadata Last Updated:2010-07-21
Current URL (HTML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=html&metadata_id=2DBCB771209E06B6E040CD9B0F274EFE
Current URL (XML format) : http://www.ntlis.nt.gov.au/metadata/export_data?type=xml&metadata_id=2DBCB771209E06B6E040CD9B0F274EFE
Title:Land Units of Walhallow Station, Northern Territory.
Custodian:Department of Environment, Parks and Water Security
This dataset provides land resource information on the map unit boundaries of the Land Resources of Walhallow Station, Northern Territory. The purpose of this survey is to assist with the land management decision making on the property, specifically for pastoral use and soil management. This survey was mapped at a scale of 1:100,000.
- North Bounding Coordinate:-17.49856
- South Bounding Coordinate:-17.848565
- East Bounding Coordinate:136.061197
- West Bounding Coordinate:135.181204
Character Set: Latin 1
Maintenance and Update Frequency:notPlanned
Data Currency Start Date:1992-09-16
Data Currency End Date:2010-07-21
Download the spatial data package (contains spatial data, maps and reports) via data.nt.gov.au/
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Supplied by the Department of Environment and Natural Resources. Copyright Northern Territory Government.
Lineage:Original map unit boundaries delineated from aerial photographs and stereoscope interpretation. Map units transferred to topographic map sheets via a mapograph. Original maps were hardcopy only. With the advent of geographic information systems polygons were digitised by rectifying the original hard copy maps.
Map unit boundaries derived using aerial photography and digital satellite imagery, geological and topographic data. Field data (site information) described and classified according to national standards at the time of capture.
Map unit polygons collected via geographic information systems. Core landform, soil and vegetation attributes attached to map units with additional attributes unique to individual surveys.
Positional Accuracy:Map unit boundaries transferred from aerial photographs to topographic maps, using the best available topographic mapping at the time (generally 1:100 000) via a mapograph. Level of accuracy depends on the number of control points on individual aerial photographs. Control points include creek lines, cadastre and other topographic features. Depending on the nature of the landscape (the number of control points), positional accuracy may vary. Positional accuracy generally considered moderate to high.
Attribute Accuracy:Attributes assigned according to the dominant feature. For example where ten sites have been grouped to describe a particular map unit and two different soils described from these sites then the dominant soil is chosen.
Logical Consistency:GIS editing tools were used to rectify all overshoots and undershoots in linework. Using ArcInfo topological consistency checks were performed to detect flaws in the spatial data structure. The coverage was cleaned, to eliminate any duplicates arcs. The coverage was built for arcs and polygon topologies. A label errors routine was run to detect unlabelled polygons. A node errors routine was run to identify pseudo nodes and dangles. Checks were done to unsure that all classified polygons are closed, nodes are formed at intersections of lines and that each polygon has only one label.
Core attributes have been attached to polygons.
Name Organisation Position Role Phone Fax Data Requests Officer Department of Environment, Parks and Water Security Geospatial Services Branch (on behalf of department) distributor firstname.lastname@example.org
Attribute Attribute Description Possible Code Code Description LAND_UNIT The LAND_UNIT field is the land unit label from the spatial dataset (ie.9a2). LF_CLASS Landform class is a system adopted by the department. The categories do not conform to national criteria even though some have been sourced from Australian Soil and Land Survey - Field Handbook (Mc Donald et.al. 1998). LU_DESC The LU_DESC is a general text field from the map legend. The amount of detail may vary between surveys. SOIL The dominant soil order described in a land unit is recorded SOIL_SYS The SOIL_SYS field is the soil classification system used to describe the soil in the land unit description SPECIES_ 3 Where 3 dominant vegetation species described in a land unit.The order of species listed determines their dominance SPECIES_1 The dominant vegetation species described in a land unit. The order of species listed determines their dominance SPECIES_2 Where 2 dominant vegetation species were described in a land unit. The order of species listed determines their dominance SURVEY_ID The SURVEY_ID field is the first five characters from the corporate survey code SURVEY_NME The SURVEY_NAME is the full name of the report to which the mapping refers. VEG_STRUC Structural classes from NVIS (ESCAVI 2003), Walker and Hopkins (1998) and Specht (1970) classification schemes. VEG_SYS The National Vegetation Information System (NVIS) classification system.
NRETAS Survey ID WALHA_100
Bibliographic Reference: Edgoose, C. & Kennedy, A. (1996)
THE LAND RESOURCES OF WALHALLOW STATION
DLPE Technical Memorandum TM 96/4
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