A polygonal dataset of Regional Map Units (RMUs) in the Victorian Mallee.
The dataset was created from the disaggregation of land systems originally defined by Rowan and Downes (1963).
RMUs delineate areas of repeating landform component patterns that occur within a similar landscape context. They were created to provide the Mallee CMA with areas for priority investment to monitor, assess and manage regional land management issues, such as wind erosion. The units also assist in distinguishing the morphological variation in landform components, for example the difference in size of hummocks between the Tempy and Culgoa land systems.
The RMUs have been attributed for their relative wind erosion susceptibility and have been embedded into the Victorian Geomorphological Framework. Each RMU therefore has a local naming context (eg: Central Mallee 1) and a statewide Geomorphological reference, eg: 5.1.2.
The landform component grid developed by the same project, a 10 metre grid Digital Elevation Model (DEM), expert opinion and the GMU were key inputs into the creation of the landform units.
An alpha-numeric code has been applied as the naming convention for these new landform units. The letter indicates the primary parent land system to which the unit is a member whilst the number reflects the number of units the land system has been divided into.
The dataset was an output of the project "Disaggregation of landform components within land systems of the Mallee" and "Wind erosion susceptibility mapping" projects conducted by DPI between 2008 and 2011. These projects were sponsored by the Mallee Catchment Management Authority with funding from the Federal government's Caring for our Country initiative.
The final project reports and the Rowan and Downes (1963) report , "A study of the land of north-western Victoria", should be referred to when analysing or utilising this dataset.
Search Words:
Farming
,
Geoscientific information
Publication Date:
01 February 2018
Dataset Status:
NW Victoria
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
.
Mapping is generalised and nominally reflects 1:250k. There is likely to be significant variation in landform, landform patterns and associated soils within units.
Data Existence:
Metadata Name
Descriptions
Resource Name:
NW_REGIONAL_MANAGEMENT_UNIT
Title:
Regional Management Units of north west Victoria
Anzlic ID:
ANZVI0803005566
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
A polygonal dataset of Regional Map Units (RMUs) in the Victorian Mallee.
The dataset was created from the disaggregation of land systems originally defined by Rowan and Downes (1963).
RMUs delineate areas of repeating landform component patterns that occur within a similar landscape context. They were created to provide the Mallee CMA with areas for priority investment to monitor, assess and manage regional land management issues, such as wind erosion. The units also assist in distinguishing the morphological variation in landform components, for example the difference in size of hummocks between the Tempy and Culgoa land systems.
The RMUs have been attributed for their relative wind erosion susceptibility and have been embedded into the Victorian Geomorphological Framework. Each RMU therefore has a local naming context (eg: Central Mallee 1) and a statewide Geomorphological reference, eg: 5.1.2.
The landform component grid developed by the same project, a 10 metre grid Digital Elevation Model (DEM), expert opinion and the GMU were key inputs into the creation of the landform units.
An alpha-numeric code has been applied as the naming convention for these new landform units. The letter indicates the primary parent land system to which the unit is a member whilst the number reflects the number of units the land system has been divided into.
The dataset was an output of the project "Disaggregation of landform components within land systems of the Mallee" and "Wind erosion susceptibility mapping" projects conducted by DPI between 2008 and 2011. These projects were sponsored by the Mallee Catchment Management Authority with funding from the Federal government's Caring for our Country initiative.
The final project reports and the Rowan and Downes (1963) report , "A study of the land of north-western Victoria", should be referred to when analysing or utilising this dataset.
Search Words:
Farming
,
Geoscientific information
Purpose:
Geographic Extent Polygon:
Geographic Bounding Box:
Beginning to Ending Date:
2010-07-01 - 2012-06-30
Maintainence and Update Frequency:
Not planned
Stored Data Format:
Available Format(s) Types:
ArcGIS feature class
Positional Accuracy:
Attribute Accuracy:
Attributes are accurate as dataset is a broad interpretation of landform pattern and susceptibility to wind erosion
Logical Consistency:
consistent across all records
Data Source:
Dataset Source: In 1963 Rowan and Downes published "Landsystems of north west Victoria" which broadly mapped and described land, land use, climate and vegetation patterns in the Mallee region of Victoria. From 2009 to 2011 landform components described within each land system were disaggregated using a 10 meter resolution digital elevation model. 19 landforms classes were mapped in total across dryland agricultural areas. The landform mapping has been used to sub divide the broader land systems into units that delineate more localised landform patterns. These units have been used to update the Geomorphological Map Unit (GMU) mapping on the region.
Dataset Originality: Derived