A strategy to fill gaps in soil survey over large spatial extents: an example from the Murray-Darling basin of Australia

Bui, E. N. and Moran, C. J. (2003) A strategy to fill gaps in soil survey over large spatial extents: an example from the Murray-Darling basin of Australia. Geoderma, 111 1-2: 21-44. doi:10.1016/S0016-7061(02)00238-0


Author Bui, E. N.
Moran, C. J.
Title A strategy to fill gaps in soil survey over large spatial extents: an example from the Murray-Darling basin of Australia
Journal name Geoderma   Check publisher's open access policy
ISSN 0016-7061
Publication date 2003
Sub-type Article (original research)
DOI 10.1016/S0016-7061(02)00238-0
Volume 111
Issue 1-2
Start page 21
End page 44
Total pages 24
Place of publication Amsterdam
Publisher Elsevier Science Bv
Language eng
Abstract We re-mapped the soils of the Murray-Darling Basin (MDB) in 1995-1998 with a minimum of new fieldwork, making the most out of existing data. We collated existing digital soil maps and used inductive spatial modelling to predict soil types from those maps combined with environmental predictor variables. Lithology, Landsat Multi Spectral Scanner (Landsat MSS), the 9-s digital elevation model (DEM) of Australia and derived terrain attributes, all gridded to 250-m pixels, were the predictor variables. Because the basin-wide datasets were very large data mining software was used for modelling. Rule induction by data mining was also used to define the spatial domain of extrapolation for the extension of soil-landscape models from existing soil maps. Procedures to estimate the uncertainty associated with the predictions and quality of information for the new soil-landforms map of the MDB are described. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword Agriculture, Soil Science
Data Mining
Environmental Correlation
Soil-landscape Models
Spatial Modelling
Landscape
Prediction
Soil Science
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Sustainable Minerals Institute Publications
 
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Created: Mon, 13 Aug 2007, 13:21:32 EST