{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,2]],"date-time":"2026-03-02T10:10:03Z","timestamp":1772446203396,"version":"3.50.1"},"reference-count":96,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2017,11,24]],"date-time":"2017-11-24T00:00:00Z","timestamp":1511481600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Government of Asturias","award":["SV-PA-13-ECOEMP-40"],"award-info":[{"award-number":["SV-PA-13-ECOEMP-40"]}]},{"name":"Government of Asturias","award":["PhD Grant Severo Ochoa - BP14-104"],"award-info":[{"award-number":["PhD Grant Severo Ochoa - BP14-104"]}]},{"name":"Spanish Ministry of Education","award":["PhD Grant FPU - FPU14\/01350"],"award-info":[{"award-number":["PhD Grant FPU - FPU14\/01350"]}]},{"name":"University of Oviedo","award":["Predoctoral Grant 2014"],"award-info":[{"award-number":["Predoctoral Grant 2014"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The Airborne Hyperspectral Scanner (AHS) and the Hyperion satellite hyperspectral sensors were evaluated for their ability to predict topsoil organic carbon (C) in burned mountain areas of northwestern Spain slightly covered by heather vegetation. Predictive models that estimated total organic C (TOC) and oxidizable organic C (OC) content were calibrated using two datasets: a ground observation dataset with 39 topsoil samples collected in the field (for models built using AHS data), and a dataset with 200 TOC\/OC observations predicted by AHS (for models built using Hyperion data). For both datasets, the prediction was performed by stepwise multiple linear regression (SMLR) using reflectances and spectral indices (SI) obtained from the images, and by the widely-used partial least squares regression (PLSR) method. SMLR provided a performance comparable to or even better than PLSR, while using a lower number of channels. SMLR models for the AHS were based on a maximum of eight indices, and showed a coefficient of determination in the leave-one-out cross-validation R2 = 0.60\u20130.62, while models for the Hyperion sensor showed R2 = 0.49\u20130.61, using a maximum of 20 indices. Although slightly worse models were obtained for the Hyperion sensor, which was attributed to its lower signal-to-noise ratio (SNR), the prediction of TOC\/OC was consistent across both sensors. The relevant wavelengths for TOC\/OC predictions were the red region of the spectrum (600\u2013700 nm), and the short wave infrared region between ~2000\u20132250 nm. The use of SMLR and spectral indices based on reference channels at ~1000 nm was suitable to quantify topsoil C, and provided an alternative to the more complex PLSR method.<\/jats:p>","DOI":"10.3390\/rs9121211","type":"journal-article","created":{"date-parts":[[2017,11,24]],"date-time":"2017-11-24T06:39:25Z","timestamp":1511505565000},"page":"1211","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":42,"title":["Prediction of Topsoil Organic Carbon Using Airborne and Satellite Hyperspectral Imagery"],"prefix":"10.3390","volume":"9","author":[{"given":"Juanjo","family":"Pe\u00f3n","sequence":"first","affiliation":[{"name":"Remote Sensing Applications Research Group (RSApps), Area of Cartographic, Geodesic and Photogrammetric Engineering, Department of Mining Exploitation and Prospecting, University of Oviedo, Gonzalo Guti\u00e9rrez Quir\u00f3s s\/n, 33600 Mieres, Asturias, Spain"}]},{"given":"Carmen","family":"Recondo","sequence":"additional","affiliation":[{"name":"Remote Sensing Applications Research Group (RSApps), Area of Cartographic, Geodesic and Photogrammetric Engineering, Department of Mining Exploitation and Prospecting, University of Oviedo, Gonzalo Guti\u00e9rrez Quir\u00f3s s\/n, 33600 Mieres, Asturias, Spain"},{"name":"Institute of Natural Resources and Territorial Planning (INDUROT), University of Oviedo, Gonzalo Guti\u00e9rrez Quir\u00f3s s\/n, 33600 Mieres, Asturias, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8267-0371","authenticated-orcid":false,"given":"Susana","family":"Fern\u00e1ndez","sequence":"additional","affiliation":[{"name":"Department of Geology, University of Oviedo, Jes\u00fas Arias de Velasco s\/n, 33005 Oviedo, Asturias, Spain"},{"name":"GIS-Forest Group, Department of Organisms and Systems Biology, University of Oviedo, Gonzalo Guti\u00e9rrez Quir\u00f3s s\/n, 33600 Mieres, Asturias, Spain"}]},{"given":"Javier","family":"F. Calleja","sequence":"additional","affiliation":[{"name":"Remote Sensing Applications Research Group (RSApps), Department of Physics, Polytechnic School of Mieres, University of Oviedo, Gonzalo Guti\u00e9rrez Quir\u00f3s s\/n, 33600 Mieres, Asturias, Spain"}]},{"given":"Eduardo","family":"De Miguel","sequence":"additional","affiliation":[{"name":"National Institute for Aerospace Technology (INTA), Carretera Torrej\u00f3n a Ajalvir, km 4, 28850 Torrej\u00f3n de Ardoz, Madrid, Spain"}]},{"given":"Laura","family":"Carretero","sequence":"additional","affiliation":[{"name":"National Institute for Aerospace Technology (INTA), Carretera Torrej\u00f3n a Ajalvir, km 4, 28850 Torrej\u00f3n de Ardoz, Madrid, Spain"}]}],"member":"1968","published-online":{"date-parts":[[2017,11,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1623","DOI":"10.1126\/science.1097396","article-title":"Soil carbon sequestration impacts on global climate change and food security","volume":"304","author":"Lal","year":"2004","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1146\/annurev.earth.35.031306.140057","article-title":"Balancing the global carbon budget","volume":"35","author":"Houghton","year":"2007","journal-title":"Annu. 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