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Near infrared spectroscopy to quantify the temperature reached in burned soils: Importance of calibration set variability

Título :
Near infrared spectroscopy to quantify the temperature reached in burned soils: Importance of calibration set variability
Autor :
Pérez-Bejarano, Andrea  
Guerrero, César
Editor :
Elsevier
Departamento:
Departamentos de la UMH::Agroquímica y Medio Ambiente
Fecha de publicación:
2018-09-15
URI :
https://hdl.handle.net/11000/32253
Resumen :
Near infrared (NIR) spectroscopy is a potential technique for the quantification of the temperature reached (TR) in burned soils. Due to spatial variation, inaccurate predictions can result from calibrating a model with heat-sensitive compounds that are not present in the samples of the burned area. Therefore, we investigated how to develop robust models. The progressive augmentation of the model size successively enhanced the precision, while the increase of the calibration set's variability gradually improved the accuracy through decreases in bias. The increase in calibration set variability enhances the probability of calibration using only the most common heat-sensitive compounds, facilitating reliable predictions of TR regardless of the spatial variation. On the other hand, models calibrated with heated aliquots from a unique sample, even from a composite sample, should be totally avoided because, regardless of their apparent utility, they are prone to inaccurate predictions.
Palabras clave/Materias:
Wildfire effects
Heat-sensitive compounds
Fire intensity
NIR spectroscopy
Robust models
Postfire assessment
Área de conocimiento :
CDU: Ciencias puras y naturales
Tipo documento :
application/pdf
Derechos de acceso:
info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
DOI :
https://doi.org/10.1016/j.geoderma.2018.03.038
Aparece en las colecciones:
Artículos Agroquímica y Medio Ambiente



Creative Commons La licencia se describe como: Atribución-NonComercial-NoDerivada 4.0 Internacional.