The influence of Temporal and Spatial Distribution on Essential Oil Content in Cinnamomum longepaniculatum

In this paper,researches were conducted on the influence of temporal and spatial distribution on essential oil content from Cinnamomum longepaniculatum. The result found that the maximum essential oil content in Cinnamomum longepaniculatum was in April,then kept at stable level from June to November. In April,C. longepaniculatum at the age of 11 to 20 had significantly higher oil rate. The oil rate of C. longepaniculatum on positive edge was higher than that on the negative edge. The altitude had no obvious effect on the content of essential oil in Cinnamomum longepaniculatum.