Effects of Subsetting by Carbon Content, Soil Order, and Spectral Classification on Prediction of Soil Total Carbon with Diffuse Reflectance Spectroscopy
Joint Authors
Grunwald, Sabine
Deenik, Jonathan L.
Bruland, Gregory L.
McDowell, Meryl L.
Source
Applied and Environmental Soil Science
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-21
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Earth Science , Water and Environment
Abstract EN
Subsetting of samples is a promising avenue of research for the continued improvement of prediction models for soil properties with diffuse reflectance spectroscopy.
This study examined the effects of subsetting by soil total carbon (Ct) content, soil order, and spectral classification with k-means cluster analysis on visible/near-infrared and mid-infrared partial least squares models for Ct prediction.
Our sample set was composed of various Hawaiian soils from primarily agricultural lands with Ct contents from <1% to 56%.
Slight improvements in the coefficient of determination (R2) and other standard model quality parameters were observed in the models for the subset of the high activity clay soil orders compared to the models of the full sample set.
The other subset models explored did not exhibit improvement across all parameters.
Models created from subsets consisting of only low Ct samples (e.g., Ct < 10%) showed improvement in the root mean squared error (RMSE) and percent error of prediction for low Ct soil samples.
These results provide a basis for future study of practical subsetting strategies for soil Ct prediction.
American Psychological Association (APA)
McDowell, Meryl L.& Bruland, Gregory L.& Deenik, Jonathan L.& Grunwald, Sabine. 2012. Effects of Subsetting by Carbon Content, Soil Order, and Spectral Classification on Prediction of Soil Total Carbon with Diffuse Reflectance Spectroscopy. Applied and Environmental Soil Science،Vol. 2012, no. 2012, pp.1-14.
https://search.emarefa.net/detail/BIM-461108
Modern Language Association (MLA)
McDowell, Meryl L.…[et al.]. Effects of Subsetting by Carbon Content, Soil Order, and Spectral Classification on Prediction of Soil Total Carbon with Diffuse Reflectance Spectroscopy. Applied and Environmental Soil Science No. 2012 (2012), pp.1-14.
https://search.emarefa.net/detail/BIM-461108
American Medical Association (AMA)
McDowell, Meryl L.& Bruland, Gregory L.& Deenik, Jonathan L.& Grunwald, Sabine. Effects of Subsetting by Carbon Content, Soil Order, and Spectral Classification on Prediction of Soil Total Carbon with Diffuse Reflectance Spectroscopy. Applied and Environmental Soil Science. 2012. Vol. 2012, no. 2012, pp.1-14.
https://search.emarefa.net/detail/BIM-461108
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461108