特定年龄生命表分析表明拥挤对白背飞虱的综合影响程度比对电光叶蝉小。
Age specific life table analysis showed that the integrated effect of crowding on ZLH is stronger than on WBPH.
通过对银杉主要群落种群的数量统计和年龄组成的分析，编绘了银杉种群的特定时间生命表、存活曲线和年龄结构图。
The time specific life table, survivorship curve and age structure of Cathaya argyrophylla population were obtained through analysing the demography and age structures of its main coenopopulations.
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