Polygons showing tree cover as defined by woody vegetation greater than 2 metres in height and with a crown cover (foliar density) greater than 10%.
Tree cover is mapped down to a minimum area of one hectare.
This layer was derived from LANDSAT TM digital data.
Search Words:
Biota
,
Farming
Publication Date:
02 February 2018
Dataset Status:
Complete for Victoria
Complete for Victoria
Progress:
Completed
Access Constraint:
Creative Commons Attribution 4.0 (CC-BY)
(
License Text
)
Data Existence:
Metadata Name
Descriptions
Resource Name:
TREE100
Title:
Tree Cover
Anzlic ID:
ANZVI0803001075
Custodian:
Owner:
Jurisdiction:
Victoria
Abstract:
Polygons showing tree cover as defined by woody vegetation greater than 2 metres in height and with a crown cover (foliar density) greater than 10%.
Tree cover is mapped down to a minimum area of one hectare.
This layer was derived from LANDSAT TM digital data.
Search Words:
Biota
,
Farming
Purpose:
To be used as a base cover of permanent tree cover for most purposes. Areas of temporary change have been removed. This layer depicts polygons showing tree cover as defined by woody vegetation greater than 2 metres in height and with a crown cover (foliar density) greater than 10%. Tree cover is mapped down to a minimum area of one hectare. This layer was derived from LANDSAT TM digital data.
Geographic Extent Polygon:
Geographic Bounding Box:
-34
141
150
-39
Beginning to Ending Date:
1989-12-01 - 1993-04-30
Maintainence and Update Frequency:
Unknown
Stored Data Format:
Available Format(s) Types:
DIGITAL - All major formats available
Positional Accuracy:
Precision: 10 m to 100 m
Determination: GPS and statistical analysis.
Attribute Accuracy:
A random sampling technique was applied to each mapsheet of the 1990 dataset to assess reliability. Reliability varied from 81% to 89% averaging 84.5% across Victoria. The 1993 dataset highlighted errors in the 1990 dataset which were corrected resulting in a much improved accuracy over that initially sampled.
Logical Consistency:
Not relevant
Data Source:
Dataset Source: Data was originally sourced from LANDSAT TM5 satellite images from Summer 1990 and 1993.
Dataset Originality: Primary
Contact Organisation:
Contact Position:
Address:
Telephone:
Facsimile:
Email Address:
Metadata Date:
2016-05-06
Additional Metadata:
History: This layer replaces the TREE100_9093 dataset that was removed from the Corporate Geospatial Library in November 1995. It also supersedes the TREE100_90 dataset which was dropped on 7 June 1996.
Relationship to other Datasets: There will be a layer that depicts tree cover change.
Current Design Issues: The layer was created to give an accurate assessment of tree cover extent for the state of Victoria and to provide a baseline dataset for further projects based around tree cover. This layer shows the presence or absence of trees only.
Future Design Issues: There will be a layer developed that shows tree cover change. This layer may be used as a base for future tree cover mapping in 1995.
Related Documents: None
Tree cover change in Victoria c.1869-1993. "An outline of methods for mapping and monitoring", Adam Gilbee, NRE (1999).
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