Table 3.

From Ecarnot et al. (2013). Wavelengths known to be associated with nitrogen content in vegetation. A broad range (40 nm) centered on these values were included in the feature-reduced models to ensure that each feature was captured.

Wavelength (nm)	Range Included (nm)	Assignation
460	440–480	Electron transition, chlorophyll a,b
530	510–550	Electron transition, carotenoids
670	650–690	Electron transition, chlorophyll a,b
1440	1,420–1,460	O-H bend, first overtone, starch
1500	1,480–1,520	N-H stretch
1680	1,660–1,700	C-H stretch, aromatic
1712	1,692–1,732	C-H stretch, CH3
1770	1,750–1,790	C-H stretch, CH2
1900	1,880–1,920	O-H stretch, C = O, starch, CO2H
1960	1,940–1,980	N-H, CONH2
2080	2,060–2,100	N-H stretch, proteins
2115	2,095–2,135	N-H stretch, CONH2, CONHR
2140	2,120–2,160	Amide, proteins
2230	2,210–2,250	N-H stretch, C = H stretch, amino acid
2300	2,280–2,320	N-H stretch, C = O stretch, amino acid
2400	2,380–2,420	CH2 bend, C-H deformation, cellulose