[PDF][PDF] Semi-empirical indices to assess carotenoids/chlorophyll a ratio from leaf spectral reflectance
The ratio between carotenoid and chlorophyll a concentrations (Car/Chla) is indicative of the
physiology and phenology of plants. With the aim of assessing this Car/Chla pigment ratio
from reflectance (R), a wide range of leaves from several species and conditions were
measured with high spectral resolution spectroradiometers for 7. between 400 and 800 nm.
The performances of three pigment reflectance indices:(1) simple ratio pigment index
(SRPI= R/R99),(2) normalized difference pigment index [NDPI=(R*!-R*?)/(R*!+ R*?)], and (3) …
physiology and phenology of plants. With the aim of assessing this Car/Chla pigment ratio
from reflectance (R), a wide range of leaves from several species and conditions were
measured with high spectral resolution spectroradiometers for 7. between 400 and 800 nm.
The performances of three pigment reflectance indices:(1) simple ratio pigment index
(SRPI= R/R99),(2) normalized difference pigment index [NDPI=(R*!-R*?)/(R*!+ R*?)], and (3) …
