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qld_woody_extent_2021
593219.825000
2121658.293500
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1
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Linear Unit: Meter (1.000000)
GDA_1994_Australia_Albers
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qld_woody_extent_2021
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Coordinates defining the features.
woody_extent_2021
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{DB0A403D-0A84-4948-843F-63C24F9D1C28}
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dataset
Department of Environment and Science
Principal Scientist (Remote Sensing)
(07) 3170 5686
41 Boggo Rd
Dutton Park
QLD
4102
AU
SLATS_enquiries@des.qld.gov.au
https://www.qld.gov.au/environment/land/management/mapping/statewide-monitoring/slats
20230613
ArcGIS Metadata
1.0
Queensland Spatial Catalogue
Download Service
Department of Resources
Open the Queensland Spatial Catalogue (QSpatial). Select the large SEARCH button and all available records are displayed. Select one of the four filter options provided and then the further options within the filter. The resultant search is then displayed. Select your record and complete the order.
http://qldspatial.information.qld.gov.au/catalogue/
downloadableData
10.0
ESRI ArcGIS Server Geoportal Extension Content Type
Department of Resources
Discovery Team
From the Queensland Spatial Catalogue as woody extent 2021
3000
http://qldspatial.information.qld.gov.au/catalogue/custom/search.page?q=%22Statewide Landcover And Trees Study (SLATS) Sentinel-2 - 2021 woody vegetation extent - Queensland - Whole of state%22
Statewide Landcover And Trees Study (SLATS) Sentinel-2 - 2021 woody vegetation extent - Queensland - Whole of state
DP_QLD_WOODY_EXTENT_2021.ZIP
2023-06-13
Department of Environment and Science
Assistant Director-General, Science Delivery
Department of Environment and Science
Assistant Director-General, Science Delivery
Department of Resources
QSpatial Support
(07) 3330 4442
Discovery@resources.qld.gov.au
This dataset is a pre-packaged zip file containing the entire Queensland woody vegetation extent in file geodatabase format. The SLATS 2021 Woody extent dataset shows the presence/absence of woody vegetation throughout Queensland.
The scale of the woody extent dataset is intended to capture features visible at a nominal map scale of 1:10,000: stands of woody vegetation greater than 0.5 ha with a canopy density greater than 10% crown cover will be classified as woody. A minimum width of 20 metres applies to linear features.
A 2021 Woody Vegetation Extent for ongoing vegetation monitoring and reporting.
Department of Environment and Science
Science Leader (Remote Sensing)
(07) 3170 5688
41 Boggo Rd
Dutton Park
QLD
4102
AU
SLATS_enquiries@des.qld.gov.au
https://www.qld.gov.au/environment/land/management/mapping/statewide-monitoring/slats
GDB
1
AGRICULTURE
AGRICULTURE-Horticulture
ECOLOGY-Landscape
FLORA
FORESTS
LAND
LAND-Cover
VEGETATION
VEGETATION-Floristic
ANZLIC Search Words
Environment
Queensland Open Data Categories
AGRICULTURE
AGRICULTURE-Horticulture
ECOLOGY-Landscape
FLORA
FORESTS
LAND
LAND-Cover
VEGETATION
VEGETATION-Floristic
Environment
© State of Queensland (Department of Environment and Science) <2023>
This material is licensed under a Creative Commons - Attribution 4.0 Australia licence.
The Department of Environment and Science requests attribution in the following manner:
© State of Queensland (Department of Environment and Science) 2023. Updated data available at http://qldspatial.information.qld.gov.au/catalogue//
Resource Access Level
QLD_WOODY_EXTENT_2021
Queensland
138
155
-29.5
-9
2023-04-01
2023-06-01
true
137.244841
154.104523
-30.308504
-8.199822
The classes are categorised in the "Woody_extent_2021" field as 1 - Woody, 2 - Non-Woody. Features were categorised as either woody or non-woody based on a set of decision rules informed by visual inspection of the data, the needs of existing datasets/programs, and expert knowledge. These decisions were based on considerations for the SLATS and Spatial BioCondition programs, and other vegetation monitoring applications, as well as ecological characteristics of the vegetation. No distinction was made between native and non-native vegetation; woody vegetation such as woody weeds and horticultural crops are included as woody in the final classification.
The dataset has been clipped to the Qld Coastline and state border boundary layer. The data is subdivided into a 25x25km grid to aid in drawing and editing performance.
Public
Metadata Access Level
The absolute accuracy has not been validated. The data set has a Minimum Mapping Unit of 0.5HA. The minimum width of linear woody features, e.g. narrow corridors of woody vegetation and nonwoody features, e.g. roads or power-line easements, is 20m. Both woody and nonwoody features smaller than these sizes have been filtered out of the data set.
The absolute accuracy has not been validated. Ongoing quality assessment and refinement was a core part of the data set development, to ensure consistency of mapping across the statewide product.
The data set was generated from Pan-sharpened 80cm DMC3 Triplesat imagery acquired from Earth-I UK with a specified positional accuracy of 10m (90% confidence).
The Earth-I mosaics were resampled from 80cm to 1m using Cubic Convolution.
A U-net convolutional neural network classification was fitted on the Earth-I data to produce an initial binary woody presence/absence classification, as described in Flood et al (2019).
The classification was down-sampled to 10m and subsequently manually revised and edited by a team of remote sensing scientists, and quality checked by senior scientists.
The dataset was updated using SLATS woody change data for the 2020-2021 reporting to produce a 2021 woody extent.
The data was clipped to the Queensland coastline and land borders using the Australian_NAT_Framework geopolitical data set.
References.
Flood, N., Watson, F., Collett, L., 2019, Using a U-net convolutional neural network to map woody vegetation extent from high resolution satellite imagery across Queensland, Australia, International Journal of Applied Earth Observation and Geoinformation, Volume 82, ISSN 0303-2434, https://doi.org/10.1016/j.jag.2019.101897.
A set of pan-sharpened, pre-processed image mosaics acquired between April and November 2017 over Queensland at a resolution of 80cm was purchased from Earth-I UK.
5317960
EPSG Geodetic Parameter
Dataset
2007-07-16
Version 6.13
6.12(9.3.0.0)
Projection
6.12(9.3.0.0)
Horizontal Datum
6.12(9.3.0.0)