The population dynamic of Tsuga tchekiangensis in Wuyishan Nature Reserve was studied and its age structure, the life table, survival curve, mortality rate and killing power curve were analyzed.

对武夷山自然保护区南方铁杉种群动态进行了系统研究，绘制该种群的年龄结构，编制静态生命表，分析存活曲线、死亡率曲线和损失度曲线。

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The number dynamic law of natural racial group of the trivoltinism mulberry white caterpillar was studied Using life table.

采用生命表的形式研究了三化性桑蟥自然种群数量动态规律。

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