The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy
Laboratory imaging spectroscopy can be used to explore physical and chemical variations in soil profiles on a submillimetre scale. We used a hyperspectral scanner in the 400 to 1000 nm spectral range mounted in a laboratory frame to record images of two soil cores. Samples from these cores were chem...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | Applied and Environmental Soil Science |
| Online Access: | http://dx.doi.org/10.1155/2012/274903 |
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| _version_ | 1832556564211302400 |
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| author | Henning Buddenbaum Markus Steffens |
| author_facet | Henning Buddenbaum Markus Steffens |
| author_sort | Henning Buddenbaum |
| collection | DOAJ |
| description | Laboratory imaging spectroscopy can be used to explore physical and chemical variations in soil profiles on a submillimetre scale. We used a hyperspectral scanner in the 400 to 1000 nm spectral range mounted in a laboratory frame to record images of two soil cores. Samples from these cores were chemically analyzed, and spectra of the sampled regions were used to train chemometric PLS regression models. With these models detailed maps of the elemental concentrations in the soil cores could be produced. Eight different spectral pretreatments were applied to the sample spectra and to the resulting images in order to explore the influence of these pre-treatments on the estimation of elemental concentrations. We found that spectral preprocessing has a minor influence on chemometry results when powerful regression algorithms like PLSR are used. |
| format | Article |
| id | doaj-art-99cd23ee8e6648059559c7eace193019 |
| institution | Kabale University |
| issn | 1687-7667 1687-7675 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied and Environmental Soil Science |
| spelling | doaj-art-99cd23ee8e6648059559c7eace1930192025-02-03T05:45:00ZengWileyApplied and Environmental Soil Science1687-76671687-76752012-01-01201210.1155/2012/274903274903The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging SpectroscopyHenning Buddenbaum0Markus Steffens1Environmental Remote Sensing and Geoinformatics, Trier University, 54286 Trier, GermanyLehrstuhl für Bodenkunde, Technische Universität München, 85350 Freising-Weihenstephan, GermanyLaboratory imaging spectroscopy can be used to explore physical and chemical variations in soil profiles on a submillimetre scale. We used a hyperspectral scanner in the 400 to 1000 nm spectral range mounted in a laboratory frame to record images of two soil cores. Samples from these cores were chemically analyzed, and spectra of the sampled regions were used to train chemometric PLS regression models. With these models detailed maps of the elemental concentrations in the soil cores could be produced. Eight different spectral pretreatments were applied to the sample spectra and to the resulting images in order to explore the influence of these pre-treatments on the estimation of elemental concentrations. We found that spectral preprocessing has a minor influence on chemometry results when powerful regression algorithms like PLSR are used.http://dx.doi.org/10.1155/2012/274903 |
| spellingShingle | Henning Buddenbaum Markus Steffens The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy Applied and Environmental Soil Science |
| title | The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy |
| title_full | The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy |
| title_fullStr | The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy |
| title_full_unstemmed | The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy |
| title_short | The Effects of Spectral Pretreatments on Chemometric Analyses of Soil Profiles Using Laboratory Imaging Spectroscopy |
| title_sort | effects of spectral pretreatments on chemometric analyses of soil profiles using laboratory imaging spectroscopy |
| url | http://dx.doi.org/10.1155/2012/274903 |
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