GENERAL ENQUIRIES: Tel: + 27 12 841 2911 | Email:

Show simple item record De Klerk, HM Gilbertson, J Lück-Vogel, Melanie Kemp, J Munch, Z 2017-09-27T12:38:27Z 2017-09-27T12:38:27Z 2016-11
dc.identifier.citation De Klerk, H.M., Gilbertson, J., Lück-Vogel, M. et al. 2016. Using remote sensing in support of environmental management: A framework for selecting products, algorithms and methods. Journal of Environmental Management, vol. 182: 564-573 en_US
dc.identifier.issn 0301-4797
dc.identifier.uri doi:10.1016/j.jenvman.2016.07.073.
dc.description Copyright: 2016 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, kindly consult the publisher's website. en_US
dc.description.abstract Traditionally, to map environmental features using remote sensing, practitioners will use training data to develop models on various satellite data sets using a number of classification approaches and use test data to select a single ‘best performer’ from which the final map is made. We use a combination of an omission/commission plot to evaluate various results and compile a probability map based on consistently strong performing models across a range of standard accuracy measures. We suggest that this easy-to-use approach can be applied in any study using remote sensing to map natural features for management action. We demonstrate this approach using optical remote sensing products of different spatial and spectral resolution to map the endemic and threatened flora of quartz patches in the Knersvlakte, South Africa. Quartz patches can be mapped using either SPOT 5 (used due to its relatively fine spatial resolution) or Landsat8 imagery (used because it is freely accessible and has higher spectral resolution). Of the variety of classification algorithms available, we tested maximum likelihood and support vector machine, and applied these to raw spectral data, the first three PCA summaries of the data, and the standard normalised difference vegetation index. We found that there is no ‘one size fits all’ solution to the choice of a ‘best fit’ model (i.e. combination of classification algorithm or data sets), which is in agreement with the literature that classifier performance will vary with data properties. We feel this lends support to our suggestion that rather than the identification of a ‘single best’ model and a map based on this result alone, a probability map based on the range of consistently top performing models provides a rigorous solution to environmental mapping. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Worklist;18275
dc.subject Environmental management mapping en_US
dc.subject Remote sensing en_US
dc.subject Probability map en_US
dc.subject Knersvlakte en_US
dc.subject Object-oriented classification en_US
dc.title Using remote sensing in support of environmental management: A framework for selecting products, algorithms and methods en_US
dc.type Article en_US

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search ResearchSpace

Advanced Search


My Account