Authors / CoAuthors
Viscarra Rossel, R. | Chappell, A. | de Caritat, P. | McKenzie, N.J.
Abstract
We describe the information content of soil visible-near infrared (vis-NIR) reflectance spectra and map their spatial distribution across Australia. The spectra of 4030 surface soil sample from across the country were measured using a vis-NIR spectrometer with a wavelength range between 350-2500 nm. The spectra were treated using a principal component analysis (PCA) and the resulting scores were mapped by ordinary point kriging. The largely dominant and common feature in the maps was the difference between the more expansive, older and more weathered landscapes in the centre and west of Australia and the generally younger, more complex landscapes in the east. A surface soil class map derived from the clustering of the principal components was similar to an existing soil classification map. We show that vis-NIR reflectance spectra: (i) provide an integrative measure to rapidly and efficiently measure the constituents of the soil, (ii) can replace the use of traditional soil properties to describe the soil and make geomorphological interpretations of its spatial distribution and (iii) can be used to classify soil objectively.
Product Type
nonGeographicDataset
eCat Id
69858
Contact for the resource
Custodian
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- External Publication
- ( Theme )
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- soils
- ( Theme )
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- regolith
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- AU
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2009-11-24T00:00:00
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unknown
Topic Category
geoscientificInformation
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Unknown
Parent Information
Extents
[-44.0, -10.0, 112.0, 154.0]
Reference System
Spatial Resolution
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