Visible and Near-Infrared Reflectance Spectroscopy for Investigating Soil Mineralogy: A Review
Affiliation
Univ Arizona, Dept Soil Water & Environm SciUniv Arizona, Dept Geosci
Issue Date
2018
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Qian Fang, Hanlie Hong, Lulu Zhao, Stephanie Kukolich, Ke Yin, and Chaowen Wang, “Visible and Near-Infrared Reflectance Spectroscopy for Investigating Soil Mineralogy: A Review,” Journal of Spectroscopy, vol. 2018, Article ID 3168974, 14 pages, 2018. https://doi.org/10.1155/2018/3168974.Journal
JOURNAL OF SPECTROSCOPYRights
Copyright © 2018 Qian Fang et al. This is an open access article distributed under the Creative Commons Attribution License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Clay minerals are the most reactive and important inorganic components in soils, but soil mineralogy classifies as a minor topic in soil sciences. Revisiting soil mineralogy has been gradually required. Clay minerals in soils are more complex and less well crystallized than those in sedimentary rocks, and thus, they display more complicated X-ray diffraction (XRD) patterns. Traditional characterization methods such as XRD are usually expensive and time-consuming, and they are therefore inappropriate for large datasets, whereas visible and near-infrared reflectance spectroscopy (VNIR) is a quick, cost-efficient, and nondestructive technique for analyzing soil mineralogic properties of large datasets.) The main objectives of this review are to bring readers up to date with information and understanding of VNIR as it relates to soil mineralogy and attracts more attention from a wide variety of readers to revisit soil mineralogy. We begin our review with a description of fundamentals of VNIR. We then review common methods to process soil VNIR spectra and summary spectral features of soil minerals with particular attention to those <2 mu m fractions. We further critically review applications of chemometric methods and related model building in spectroscopic soil mineral studies. We then compare spectral measurement with multivariate calibration methods, and we suggest that they both produce excellent results depending on the situation. Finally, we suggest a few avenues of future research, including the development of theoretical calibrations of VNIR more suitable for various soil samples worldwide, better elucidation of clay mineral-soil organic carbon (SOC) interactions, and building the concept of integrated soil mapping through combined information (e.g., mineral composition, soil organic matter-SOM, SOC, pH, and moisture).Note
Open access journal.ISSN
2314-49202314-4939
Version
Final published versionSponsors
Special Funding for Soil Mineralogy [CUG170106]; NSF of China [41772032, 41472041]; NSFC for Young Scholars [41402036, 41602037]; NSF of Hubei for Young Scholars [2016CFB183]; Postdoctoral Science Foundation of China [2015M582301]; China Scholarship Council (CSC) [201706410017, 201706410006]Additional Links
https://www.hindawi.com/journals/jspec/2018/3168974/ae974a485f413a2113503eed53cd6c53
10.1155/2018/3168974
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Except where otherwise noted, this item's license is described as Copyright © 2018 Qian Fang et al. This is an open access article distributed under the Creative Commons Attribution License.