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采用样地调查法对南京紫金山栓皮栎种群年龄结构进行分析并编制静态生命表。结果表明:该种群的年龄结构呈衰退型,V级大树所占的比例最高,I级幼苗次之,Ⅳ级立木第三;种群的存活曲线趋近于DeeveyⅡ型,种群存在一定的波动性,胸径0~10 cm的数量最多,有较高的死亡率;胸径10~40 cm的数量相对稳定,死亡率较低;胸径40 cm以上的数量较少,有较高死亡率。
The age structure of Quercus variabilis population in Nanjing Zijin Mountain was analyzed by using plots survey method and a static life table was prepared. The results showed that the age structure of the population showed a declining pattern, the highest proportion of V-class trees, the second-class I seedlings, and the third-class Ⅳ standing tree. The population survival curve approached Deevey Ⅱ type and the population had some volatility , The number of 0-10 cm in diameter was the highest, and the mortality was higher; the number of 10-40 cm in diameter was relatively stable and the mortality was low; the number above 40 cm in diameter was relatively small with higher mortality.