The author would like to draw the reader's attention to an error in the following article:
Ono K, Miki K, Amari M, Hirai K 2008: Near-infrared reflectance spectroscopy for the determination of lignin-derived compounds in the decomposed and humified litters of coniferous and deciduous temperate forests in Northern Kanto District, Central Japan. Soil Sci. Plant. Nutr., 54, 188–196.
Figure 2 of the above article was published incorrectly. The correct figure is as shown below.
Figure 2. Relationships between RMSECV (left axis, solid line), RPD (right axis, broken line), and F (the number of factors) for lignin content in PLS calibration. The grayish arrows in figure are shown the numbers of factors normally recommended by NSAS software. The black arrows in figure are shown the numbers of factors performed best fit by PLS.
TKB: Tsukuba Experimental Site.
TGR: Tengakura Experimental Site.
OFR: Ogawa Forest Researve.
The author apologizes for this error and any confusion it may have caused.