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Active crop frequency mapping - Western Queensland 1988-2014

Summary

Type of release
a one-off release of a single dataset

Data Licence
Not Applicable

Content Licence
Creative Commons Attribution

Verification
automatically awarded

Release Date
27 May 2015
Modified Date
2 February 2018
Publishers
Environment and Science
Identifier
active-crop-frequency-mapping-western-queensland-1988-2014
Landing Page
https://data.qld.gov.au/dataset/active-crop-frequency-mapping-western-queensland-1988-2014
Maintainers
opendata@dsiti.qld.gov.au opendata@dsiti.qld.gov.au
Contributors
opendata@dsiti.qld.gov.au opendata@dsiti.qld.gov.au
Theme
government

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Description

This dataset shows the frequency or number of times that an area has been actively cropped in the southern and northern region of the western Strategic Cropping Lands (SCL) in Queensland for the winter and summer growing seasons from 1987 to 2014. It is based on the dataset - Active crop mapping - Western Queensland cropping zone1988-2014 derived from USGS Landsat images.Two predefined growing seasons were used for winter (June to October) and summer (November to May), and actively growing crops with a green vigour were classified for each season separately. Temporal (within season) and spectral information were used in a regression tree based classifier (Random Forest), utilising field observations as training data.The frequency of active crops for the winter and summer season were calculated for the previous intervals of 10, 20 and 27 years of Landsat data.An additional annual frequency data layer is also provided which combines the winter and summer growing seasons. Where two crops in one year have been detected, these are only counted once in the annual data layer.The crop frequency count for each interval (i.e. 10, 20 and 27 years) is calculated by summing the probability of an active crop over time and rounding to the nearest whole number. Only areas where two or more active crops have been detected in each interval are represented in the dataset. This is to minimise commission error due to a single wet season where active crop detection is confounded by greening up effects in pasture and other areas surrounding cropping areas.

General Information

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    https://data.qld.gov.au/dataset/active-crop-frequency-mapping-western-queensland-1988-2014 Do you think this data is incorrect? Let us know

  • There are

    yes, and the rights are all held by the same person or organisation Do you think this data is incorrect? Let us know

  • The content is available under

    Creative Commons Attribution Do you think this data is incorrect? Let us know

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    its data licence Do you think this data is incorrect? Let us know

Practical Information

  • The website links to the data from

    https://data.qld.gov.au/ Do you think this data is incorrect? Let us know

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    https://data.qld.gov.au/publisher/environment-and-science Do you think this data is incorrect? Let us know

  • The accuracy or relevance of this data will

    go out of date but it is timestamped Do you think this data is incorrect? Let us know

  • The data is

    backed up offsite Do you think this data is incorrect? Let us know

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  • Find out how to contact someone about this data at

    https://data.qld.gov.au/dataset/active-crop-frequency-mapping-western-queensland-1988-2014 Do you think this data is incorrect? Let us know

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