Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. (A) Soil water content of each sample in evaporation process. The number label of x axis represents the height and the letter represents three particles of (a) 0 to 0.2 mm, (b) 0.2 to 2 mm, and (c) >2 mm, respectively. (B) Soil relative emissivity corresponding to soil water content. Figure Legend: From: Determining soil water content of salt-affected soil using far-infrared spectra: laboratory experiment J. Appl. Remote Sens. 2015;9(1): doi: /1.JRS

Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. (a) Sample emissivity (gray) and mean emissivity (color) of each particle size; (b), (c), and (d) represent soil emissivity of fine, medium, and coarse particles at the last measurement. Figure Legend: From: Determining soil water content of salt-affected soil using far-infrared spectra: laboratory experiment J. Appl. Remote Sens. 2015;9(1): doi: /1.JRS

Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. Correlation coefficient between soil water content and each spectral form: (a) relative emissivity (rE), (b) logarithm of reciprocal spectra (LRE), (c) first-order derivative spectra (DE), and (d) second-order derivative spectra (DDE). Figure Legend: From: Determining soil water content of salt-affected soil using far-infrared spectra: laboratory experiment J. Appl. Remote Sens. 2015;9(1): doi: /1.JRS

Date of download: 6/3/2016 Copyright © 2016 SPIE. All rights reserved. The result of cross-validation for principal component numbers determination based on rE, LRE, DE, and DDE [(a1), (b1), (c1), and (d1)], and soil water content estimate based on rE, LRE, DE, and DDE [(a2), (b2), (c2), and (d2)]. Figure Legend: From: Determining soil water content of salt-affected soil using far-infrared spectra: laboratory experiment J. Appl. Remote Sens. 2015;9(1): doi: /1.JRS