Background: is used in traditional Chinese medicine, so ensuring an adequate supply of plant material with high levels of bioactive components is important.
Methods: Using an optimized maximum entropy niche model and assays of bioactive components from cultivation samples, this study started from the plant's natural distribution area and estimated correlations of ecological factors with not only abundance of the plant but also abundance of polysaccharides and heterophyllin B. These correlations were combined with the spatial analysis function in ArcGIS to generate maps of the suitability of different habitats in China for cultivating under current climate conditions and different models of climate change.