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Gentiana dahurica  Fisch. is a characteristic medicinal plant found in Inner Mongolia, China. To meet the increase in market demand and promote the development of medicinal plant science, we explored the influence of the environment on its distribution and the quantity of its active compounds (loganic acid and 6’- O - β -D-glucosylgentiopicroside) to find suitable cultivation areas for  G. dahurica . Based on the geographical distribution of  G. dahurica  in Inner Mongolia and the ecological factors that affect its growth, identified from the literature and field visits, a boosted regression tree (BRT) was used to model ecologically suitable areas in the region. The relationship between the content of each of active compound in the plant and ecological factors was also established for Inner Mongolia using linear regression. The results showed that elevation and soil type had the most significant influence on the distribution of  G. dahurica —their relative contribution was 30.188% and 28.947%, respectively. The factors that had the greatest impact on the distribution of high-quality  G. dahurica  were annual precipitation, annual mean temperature, and temperature seasonality. The results of BRT and linear regression modeling showed that suitable areas for high-quality  G. dahurica  included eastern Ordos, southern Baotou, Hohhot, southern Wulanchabu, southern Xilin Gol, and central Chifeng. However, there were no significant correlations between the contents of loganic acid and 6’- O - β -D-glucosylgentiopicroside and the ecological factors. This study explored the influence of the environment on the growth and quantity of active compounds in  G. dahurica  to provide guidance for coordinating the development of medicinal plant science.

Influence of the Environment on the Distribution and Quality of Gentiana dahurica Fisch.