Population Characteristics of Taxus chinensis var. mairei in

Sample plots were set in four villages (Renhe village, Cinnabar village, Longping village, Wenping village) of Baokang county to research quantitative characteristics and structural characteristics as well as sex ratio structures of natural population of Taxus chinensis var. mairei by using field survey methods. The results showed that the individual distribution of natural population of Taxus chinensis var. mairei was a contagious one in the survey area with a consid- erable density. The number of plants in the juvenile phase (66%) was larger than that of others. There were few stump- ages (DBH > 12 cm). When an individual's height exceeded 100 cm, the size class of population was like an upward pyramid. It's favorable for the stable development of the entire population with the ratio of female to male being close to 1:1.