Evaluation of three field-based methods for quantifying soil carbon

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dc.contributor.author Izaurralde, Roberto C.
dc.contributor.author Rice, Charles W.
dc.contributor.author Wielopolski, Lucian
dc.contributor.author Ebinger, Michael H.
dc.contributor.author Thomson, Allison M.
dc.contributor.author Harris, Ronny
dc.contributor.author Francis, Barry
dc.contributor.author Mitra, Sudeep
dc.contributor.author Rappaport, Aaron G.
dc.contributor.author Etchevers, Jorge D.
dc.contributor.author Sayre, Kenneth D.
dc.contributor.author Govaerts, Bram
dc.contributor.author McCarty, Gregory W.
dc.contributor.author Reeves, James B. III
dc.date.accessioned 2013-03-20T15:09:02Z
dc.date.available 2013-03-20T15:09:02Z
dc.date.issued 2013-03-20
dc.identifier.uri http://hdl.handle.net/2097/15382
dc.description Citation: Izaurralde, Roberto C., Charles W. Rice, Lucian Wielopolski, Michael H. Ebinger, James B. Reeves Iii, Allison M. Thomson, Ronny Harris, et al. “Evaluation of Three Field-Based Methods for Quantifying Soil Carbon.” PLOS ONE 8, no. 1 (January 31, 2013): e55560. https://doi.org/10.1371/journal.pone.0055560.
dc.description.abstract Three advanced technologies to measure soil carbon (C) density (g C mˉ²) are deployed in the field and the results compared against those obtained by the dry combustion (DC) method. The advanced methods are: a) Laser Induced Breakdown Spectroscopy (LIBS), b) Diffuse Reflectance Fourier Transform Infrared Spectroscopy (DRIFTS), and c) Inelastic Neutron Scattering (INS). The measurements and soil samples were acquired at Beltsville, MD, USA and at Centro International para el Mejoramiento del Maı´z y el Trigo (CIMMYT) at El Bata´n, Mexico. At Beltsville, soil samples were extracted at three depth intervals (0–5, 5–15, and 15–30 cm) and processed for analysis in the field with the LIBS and DRIFTS instruments. The INS instrument determined soil C density to a depth of 30 cm via scanning and stationary measurements. Subsequently, soil core samples were analyzed in the laboratory for soil bulk density (kg mˉ³), C concentration (g kgˉ¹) by DC, and results reported as soil C density (kg mˉ²). Results from each technique were derived independently and contributed to a blind test against results from the reference (DC) method. A similar procedure was employed at CIMMYT in Mexico employing but only with the LIBS and DRIFTS instruments. Following conversion to common units, we found that the LIBS, DRIFTS, and INS results can be compared directly with those obtained by the DC method. The first two methods and the standard DC require soil sampling and need soil bulk density information to convert soil C concentrations to soil C densities while the INS method does not require soil sampling. We conclude that, in comparison with the DC method, the three instruments (a) showed acceptable performances although further work is needed to improve calibration techniques and (b) demonstrated their portability and their capacity to perform under field conditions. en_US
dc.language.iso en_US en_US
dc.relation.uri https://doi.org/10.1371/journal.pone.0055560 en_US
dc.rights PLOS applies the Creative Commons Attribution (CC BY) license to articles and other works we publish. If you submit your paper for publication by PLOS, you agree to have the CC BY license applied to your work. Under this Open Access license, you as the author agree that anyone can reuse your article in whole or part for any purpose, for free, even for commercial purposes. Anyone may copy, distribute, or reuse the content as long as the author and original source are properly cited. This facilitates freedom in re-use and also ensures that PLOS content can be mined without barriers for the needs of research.
dc.rights.uri https://journals.plos.org/plosone/s/licenses-and-copyright
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Soil carbon en_US
dc.subject Laser Induced Breakdown Spectroscopy en_US
dc.subject Diffuse Reflectance Fourier Transform Infrared Spectroscopy en_US
dc.subject Inelastic Neutron Scattering en_US
dc.title Evaluation of three field-based methods for quantifying soil carbon en_US
dc.type Text en_US
dc.date.published 2013 en_US
dc.citation.doi 10.1371/journal.pone.0055560 en_US
dc.citation.issn 1932-6203
dc.citation.issue 1 en_US
dc.citation.jtitle PLoS ONE en_US
dc.citation.spage e55560 en_US
dc.citation.volume 8 en_US
dc.citation Izaurralde, Roberto C., Charles W. Rice, Lucian Wielopolski, Michael H. Ebinger, James B. Reeves Iii, Allison M. Thomson, Ronny Harris, et al. “Evaluation of Three Field-Based Methods for Quantifying Soil Carbon.” PLOS ONE 8, no. 1 (January 31, 2013): e55560. https://doi.org/10.1371/journal.pone.0055560.
dc.contributor.authoreid cwrice en_US
dc.description.version Article (publisher version)


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