Contacts

Identifiers and Keywords

ANZLIC Id

ANZVI0803005810 

Jurisdiction

Victoria 

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  

Creative Commons Attribution 4.0 (CC-BY)

• 
• License Text

Other Dataset Details

Date ( Revision )

2021-07-14

Status

Completed  

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) 

Format

TIFF format 2 

Supplemental Information

Future Design Issues: None Proposed Related Documents: None 

Maintenance and update frequency

As needed  

Spatial

Spatial representation type

Grid  

Description

General - Victoria 

Reference system identifier

4283

N

S

E

W

Temporal

Begin date

2010-07-01 

End date

2016-06-16 

Resolution

Horizontal Accuracy

25m  

Quality

Missing Data

Victoria 

Excess Data

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 

Attribute Quality

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

25m x 25m cells 

Lineage

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. 

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 

About the Metadata Record

Metadata identifier

urn:uuid / 18689239-8495-51cb-83e6-07753f716f19