The concentrations of N and S in Sabina chinensis leaf were higher along urban trunk roads and belt highway than at reference site, while those along suburban roads were similar to the reference.
城市干线和绕城公路蜀桧叶片中的N和S含量高于对照点，而城郊公路则接近对照。
As a result, over exploitation has led to a rapid decline of S. chinensis in nature.
但是，盲目的开采使野生北五味子急剧减少；
Objective: To establish a new method for the identification of Schisandra sphenanthera and S. chinensis.
目的： 为准确鉴别南五味子和北五味子寻找一种新的鉴别手段。
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