Retrieving chlorophyll content in conifer needles from hyperspectral measurements

摘要: Spectrally continuous hyperspectral data can be used to detect subtle features in the leaf optical spectra, which correlate especially well with major pigments such as chlorophyll content. Extensive field and laboratory measurements were carried out at 10 sites black spruce (Picea mariana (Mill.)) forests near Sudbury, Canada, collect pigment contents, biophysical parameters. It was found that needles sampled from different sites, age classes, branch orientations demonstrated variability both properties contents. The needle spectra showed a good correlation (R2 = 0.63) between average visible absorptance model PROSPECT modified incorporate edge effects of on light transfer through them. Two parameters, namely width thickness, introduced into take account effec...