Figure 9: Response-function diagram of soil clay content to the habitat suitability of atractylodes.

(a) Atractylodes with lower atractylodin content than the standard of Pharmacopoeia, (b) Atractylodes with higher atractylodin content than the standard of Pharmacopoeia. Generated using the Maxent version 3.3.3 k software (AT&T Labs–Research, Florham Park, NJ, USA. URL: http://www.cs.princeton.edu/~schapire/maxent/).