Systematic community investigation into street trees in Shenyang was carried out using typical sampling method.
采取典型抽样的方法对沈阳市行道树进行了全面的群落调查。
Methods A typical sampling method was used to perform the questionnaire study among local inhabitants and pupils.
现场问卷调查居民和小学生疟疾防治知识知晓率及对疟疾防治的需求。
Using typical sampling method, the paper studies the composition and important value of plant species in subalpine spruce fir forest on Northern Slope of Changbai Mts.
采用典型抽样方法，对长白山北坡不同海拔高度带云冷杉林的植物种类组成及重要值进行了初步研究。
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