Objective: To find the key factors that influence the content of the essential oil components of Atractylodes lancea and classify the habitat of A. lancea based the essential oil components, as well as explore a new method to conduct division of Chinese natural medicin through geographic information system (GIS) ultimately.
Method: The key factors were obtained by canonical correlation and stepwise regressive analysis. Then the interpolation of climatic data for 30 years (1971-2000) was done by Sufer 7.0, and the habitat division was done by ARCGIS 9. 0.
Result: There were 6 correlation models between climate factors and 6 main essential oil componets were obtained, and a division map about essential oil components content of A. lancea base on clamate adaptability were drawn. It was found that the climate condition in Octobers played a key role on forming the essential oil components and the interaction of tempreture and precipitation was the most important factor on forming the essential oil components of A. lancea.
Conclusion: The adaptive habitat for forming the essential oil components of A. lancea was different from growing A. lancea ones. And GIS can be used perspective for division of Chinese natural medicine.
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