Dataset
NSW Department of Climate Change, Energy, the Environment and Water
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SLATS - Woody Vegetation Change - NSW 2008-2014

These layers show areas of woody vegetation change based on the analysis of multi-date SPOT5 imagery. Woody change is detected though a combination of automated and manual interpretation of the differences between images captured during summer of each year. Satellite images are selected as close as possible to the 1st of January each year and must have a clear view of the ground not impacted by smoke or cloud cover. This requirement can result in a range of imagery dates being selected for each SLATS year.

To reflect this, data naming previously included both years in which imagery was captured, for example 2008-2009, 2009-2010, 2010-2011, 2011-2012, 2012-2013, 2013-14 and 2014-15.

For clarity data is now named using the year in which the majority of the clearing has taken place i.e. 2008, 2009, 2010, 2011, 2012, 2013, 2014.

The woody vegetation change is mapped using the SLATS (Statewide Land and Tree Survey) method which applies an automated change analysis process followed by visual interpretation of the results by experienced image interpretation staff. Landcover classes reflect the interpreted cause of woody vegetation change. Each change year has a single statewide point and polygon layer derived from approximately 310 SPOT scenes covering NSW.

Vector point format is preferred for analysis to prevent double counting when undertaking regional calculations. Points can only fall into a single region unlike raster pixels which can sit astride a vector boundary. This often occurs with analysis based on vector regions such as Local Government Areas or Bioregions.

The woody change data is also used for vegetation compliance analysis. Change statistics are available for all change periods.

Contact the data broker on data.broker@environment.nsw.gov.au for further information.

Remotely sensed imagery is routinely collected by DPE and used to map vegetation clearing. This data is spatially explicit and can be used with other datasets to identify activity on individual lots. Please read the privacy collection notice for more information.

Data and Resources

Metadata Summary What is metadata?

Field Value
Language English
Edition 01/06/2015
Purpose To support the NSW Annual Report on Native Vegetation which is OEH's comprehensive summary of actions undertaken by private and public land managers to conserve and manage native vegetation. The annual report, which is produced at the end of each calendar year, comprises the Native Vegetation Report Card, the Woody Vegetation Change Report and the Compliance and Enforcement Report Card.
Frequency of change Annually
Keywords PHOTOGRAPHY-AND-IMAGERY-Satellite,VEGETATION
Metadata Date 2009-06-01
Date of Asset Creation 2009-06-01
Date of Asset Revision 2020-03-05
Date of Asset Publication 2020-03-05
License Creative Commons Attribution 4.0
Vector representation
Record 1
Object type
Surface
Object count
Geospatial Topic Imagery base maps earth cover
Extent

Dataset extent
Temporal Coverage From 2008-01-01 - 2015-06-01
Datum GDA94 Geographic (Lat\Long)
Legal Disclaimer Read
Attribution NSW Department of Climate Change, Energy, the Environment and Water asserts the right to be attributed as author of the original material in the following manner: "© State Government of NSW and NSW Department of Climate Change, Energy, the Environment and Water 2020"
Groups 2019-20 Bushfire-related datasets: Compilation from the Science Economics and Insights Division