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The prediction of soil carbon fractions using mid-infrared-partial least square analysis

Janik, L. J., Skjemstad, J. O., Shepherd, K. D., Spouncer, L. R.·2007·Soil Research

Abstract

This paper describes the application of mid-infrared (MIR) spectroscopy and partial least-squares (PLS) analysis to predict the concentration of organic carbon fractions present in soil. The PLS calibrations were derived from a standard set of soils that had been analysed for total organic carbon (TOC), particulate organic carbon (POC), and charcoal carbon (char-C) using physical and chemical means. PLS calibration models from this standard set of soils allowed the prediction of TOC, POC, and char-C fractions with a coefficient of determination (R2) of measured v. predicted data ranging between 0.97 and 0.73. For the POC fraction, the coefficient of determination could be improved (R2 = 0.94) through the use of local calibration sets. The capacity to estimate soil fractions such as char-C rapidly and inexpensively makes this approach highly attractive for studies where large numbers of analyses are required. Inclusion of a set of soils from Kenya demonstrated the robustness of the method for total organic carbon and charcoal carbon prediction.

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Metadata

Authors
Janik, L. J., Skjemstad, J. O., Shepherd, K. D., & Spouncer, L. R.
Venue
Soil Research
Published
2007-03-28
Volume
45
Issue
2
Pages
73-81
ISSN
  • 0004-9573 (ISSN-L)
  • 1838-675X
  • 1838-6768
OpenAlex
W2001511595
Cited by
298
References
0
FWCI
12.62
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The prediction of soil carbon fractions using mid-infrared-partial least square analysis. https://app.cochat.ai/papers/10.1071/sr06083
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Janik, L. J., Skjemstad, J. O., Shepherd, K. D., & Spouncer, L. R. (2007). The prediction of soil carbon fractions using mid-infrared-partial least square analysis. Soil Research. https://doi.org/10.1071/sr06083

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