Native Vegetation Regulation Extent (2017)

dataset: NVR2017_EXTENT
This replaces NV2010_EXTENT_V3. The extent of native vegetation is the area of land covered by native vegetation. A comprehensive and accurate modelled picture of the distribution of native vegetation remaining across Victoria helps to efficiently invest in biodiversity programs, regulate land and resource use, and understand where further assessment of potential actions may be required or desirable.
 
Citation proposal Citation proposal
(2021)

Native Vegetation Regulation Extent (2017)

 

Description

Title
Native Vegetation Regulation Extent (2017) 
Alternate title
NVR2017_EXTENT 
Resource Type
Dataset  
Purpose
Native vegetation extent includes largely-intact areas typical of parks and state forests, and remnant patches and scattered trees typical of rural and peri-urban landscapes. Remnant patches retain some level of native understorey and scattered trees are mature native trees that are in a location without native understorey. Based on Native Vegetation extent data generated by ARI 2010-2015 Landsat time series data, with edits based on wetlands, addtional tree sites added from Native Vegetation Regulations source. 
Credit
Dataset Creators: Graeme Newell, Matt White & the Native Vegetation Review Team (Penny Croucamp with support from David Attard) 
Supplemental Information
Future Design Issues: None Proposed Related Documents: None 
Status
Completed  
 
 

Temporal

Time period
2010-07-012016-06-16 
 
 

Spatial

Spatial representation type
Grid  
Horizontal Accuracy
25m  
Code
4283 
Description
General - Victoria 
N
S
E
W


 

 

Maintenance

Maintenance and update frequency
As needed  
 
 

Format

Title
TIFF format 2 
 
 

Contacts

Point of contact  

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Cited responsible party  

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Cited responsible party  

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Cited responsible party  

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Cited responsible party  

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Cited responsible party  

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Cited responsible party  

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Keywords

Topic category
  • Biota
 
 

Resource Constraints

Use limitation
General access. Email request to: data.vsdl@delwp.vic.gov.au to access this Grid dataset. 
Classification
Unclassified  
 
 

Lineage

Statement
Dataset Source: The native vegetation extent map combines the results of two separate modelling and remote sensing tasks: a) the detection and characterisation of woody native vegetation (2010) b) the detection of predominantly native grasslands/pastures and wetland (2016). This has been modified by recent developments (2016) and scattered tree mapping. Dataset Originality: Primary & Derived 
Description
Collection Method: Remotely-sensed spectral data from satellite or air-borne sensors 
Description
The probability of a 10m (for woody vegetation) and 25m (for grassy vegetation) pixel cell containing native grassy vegetation was modelled separately using multi-spectral imagery from the various Landsat platforms (30m, various years 1989-2007), SPOT panchromatic (10m 1999), MODIS multi-year seasonal means (225m various years 1999-2010), RapidEye (5m 2010) and ALOS radar data (50m 2009-2010). This satellite sensor suite was 'trained' to distinguish woody vegetation from non-woody vegetation, native or non-native woody vegetation, or native grassy or other land cover type using many thousands of training sites and a machine learning algorithm (multi-objective regression trees). The native vegetation extent dataset combines the woody and grassy vegetation binary datasets along with DELWP's existing wetland data. 
 
 

Metadata Constraints

Classification
Unclassified  
 
 

Quality

Attribute Quality
Comments
The data is notionally resolved to 10m pixels in accordance with the woody vegetation data, however, to facilitate data handling and processing by a range of users it has been resampled to 25m ensuring that single 10m pixels supporting woody native vegetation were not lost. 
Positional Accuracy
Comments
25m x 25m cells 
Conceptual Consistency
Missing Data
Comments
Victoria 
Excess Data
Comments
Categorical attributes: 1. Native vegetation cover* 2. Natural waterbodies** 3. Exotic -argely treeless 4. Exotic tree cover 5. Plantations, exotic amd other 6. Artificial impoundment *Native vegetation cover: grasslands and chenopod shrublands (including some wetlands), woody cover (including heaths and woody wetlands), and sparse cover **Natural waterbodies: open, non-woody wetlands and waterbodies 
 
 

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